Biology Quiz: Toughest Trivia! Exam

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  • 1/169 Questions

    You need bacteria in your body.

    • True
    • False
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About This Quiz


Are you ready for this most challenging biology quiz? Biology is responsible for so many great things. Food is derived from plants and animals that, to some degree, are created because of the knowledge of biology. Farming, crossbreeding, and genetic engineering methods have helped improve production, eliminate weak and undesirable characteristics, and establish disease-resistant varieties into crops, fruits, and vegetables. This extraordinary quiz will tell you how advantageous biology is for everyone.

Biology Quiz: Toughest Trivia! Exam - Quiz

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  • 2. 

    Your heart has the proper structures (chambers, pumps, valves) to carry out its function (to pump blood).

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that the heart is composed of chambers, pumps, and valves that work together to carry out its main function, which is to pump blood throughout the body. The chambers, including the atria and ventricles, allow for efficient blood flow, while the pumps, specifically the left and right ventricles, generate the necessary force to push the blood out of the heart. The valves, such as the mitral and aortic valves, ensure that the blood flows in one direction and prevents backflow. Therefore, the heart indeed has the proper structures to perform its function of pumping blood.

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  • 3. 

    Spending time in nature is very good for you.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Spending time in nature has been proven to have numerous benefits for physical and mental health. It helps reduce stress, improve mood, increase creativity, boost immune system, and enhance overall well-being. Nature provides a calming and refreshing environment that allows individuals to disconnect from the demands of daily life and reconnect with themselves. Therefore, it is highly recommended to spend time in nature to improve one's health and quality of life.

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  • 4. 

    There are millions of bacteria on you and your computer right now.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Bacteria are microscopic organisms that are present everywhere, including on our bodies and surfaces like computers. It is estimated that there are millions of bacteria living on our skin and in our gut. Similarly, computer keyboards and surfaces can also harbor bacteria due to frequent contact with our hands. Therefore, it is true that there are millions of bacteria on both humans and computers at any given time.

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  • 5. 

    You can see bacteria with your naked eye.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because bacteria are microscopic organisms that cannot be seen with the naked eye. They are much smaller than what the human eye can perceive without the aid of a microscope.

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  • 6. 

    Most bacteria are harmless.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is stating that "most bacteria are harmless", which means that the majority of bacteria do not cause harm or are not dangerous. This implies that there are some bacteria that can be harmful, but the statement emphasizes that they are not the majority. Therefore, the correct answer is True.

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  • 7. 

    Some bacteria help us digest food.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Some bacteria have a symbiotic relationship with humans, particularly in our digestive system. These bacteria help break down complex carbohydrates and fiber that our bodies cannot digest on their own. They produce enzymes that break down these substances into simpler forms that our bodies can absorb and use for energy. Without these bacteria, we would not be able to fully digest and extract nutrients from our food. Therefore, it is true that some bacteria help us digest food.

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  • 8. 

    Most bacteria are harmless.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Most bacteria are harmless because they either do not cause any diseases or they live in symbiotic relationships with their hosts. Only a small percentage of bacteria are pathogenic and can cause infections or diseases. The majority of bacteria play important roles in various ecological processes, such as nutrient cycling, decomposition, and nitrogen fixation. Therefore, it is true that most bacteria are harmless.

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  • 9. 

    Your immune system can form "memories" to help it recognize and properly fight pathogens.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The immune system has the ability to create "memories" of past infections or pathogens it has encountered. These memories help the immune system recognize and mount a quicker and more effective response when it encounters the same pathogen again in the future. This is the basis for the concept of immunological memory, which is a fundamental aspect of how vaccines work. By exposing the immune system to a harmless form of a pathogen, it can create a memory of it and be better prepared to fight off the real pathogen if encountered later. Therefore, the statement is true.

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  • 10. 

    Vaccines have saved countless lives.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines have been proven to be highly effective in preventing the spread of infectious diseases, such as polio, measles, and influenza. They work by stimulating the immune system to produce antibodies, which provide protection against future infections. Through widespread vaccination programs, many diseases that were once deadly or debilitating have been eradicated or greatly reduced. Therefore, it can be concluded that vaccines have indeed saved countless lives.

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  • 11. 

    Spending time in nature has many health benefits for humans.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Spending time in nature has been proven to have numerous health benefits for humans. Research has shown that being in nature can reduce stress levels, improve mood, boost immune function, and increase physical activity. Being surrounded by natural environments can also help to lower blood pressure, improve cognitive function, and enhance overall well-being. Therefore, it is true that spending time in nature has many health benefits for humans.

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  • 12. 

    There is no scientific evidence that nature can provide health benefits to humans.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    This statement is false because there is ample scientific evidence that nature can provide health benefits to humans. Numerous studies have shown that spending time in nature can improve mental health, reduce stress levels, boost immune function, and increase physical activity. Additionally, exposure to natural environments has been linked to lower blood pressure, improved cognitive function, and enhanced overall well-being. Therefore, it is incorrect to say that there is no scientific evidence supporting the health benefits of nature for humans.

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  • 13. 

    A disease that spreads from one organism to another is 

    • Infectious

    • Non-infectious

    • Extendable

    • Catchious

    Correct Answer
    A. Infectious
    Explanation
    An infectious disease is one that can spread from one organism to another. This can occur through direct contact, such as touching or kissing, or through indirect contact, such as through contaminated surfaces or the air. Infectious diseases are caused by pathogens such as bacteria, viruses, fungi, or parasites. They can be transmitted through various means, including respiratory droplets, bodily fluids, or vectors like mosquitoes. Examples of infectious diseases include the flu, COVID-19, HIV/AIDS, and tuberculosis. Non-infectious diseases, on the other hand, are not caused by pathogens and cannot be transmitted between individuals.

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  • 14. 

    Viruses protect their genetic material with a capsid, which is a protein coat.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Viruses protect their genetic material with a capsid, which is a protein coat. This statement is true. The capsid is a protective shell made up of protein molecules that surrounds the genetic material of a virus. It helps to protect the genetic material from being degraded or damaged by external factors such as enzymes or the host's immune system. The capsid also plays a crucial role in the virus's ability to infect host cells by binding to specific receptors on the cell surface. Overall, the capsid is an essential component of a virus's structure and function.

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  • 15. 

    Vaccines can provide immunity to specific infectious diseases.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines work by introducing a weakened or inactive form of a specific pathogen into the body. This stimulates the immune system to produce an immune response, including the production of antibodies that can recognize and neutralize the pathogen. Once the immune system has encountered the pathogen through vaccination, it is better prepared to mount a rapid and effective response if it encounters the actual infectious disease in the future. Therefore, vaccines can indeed provide immunity to specific infectious diseases.

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  • 16. 
    Which bacteria cell part goes in the box labelled a and is used for movement?  - ProProfs

    Which bacteria cell part goes in the box labelled a and is used for movement? 

    • Flagella

    • DNA

    • Ribosomes

    • Plasma Membrane

    Correct Answer
    A. Flagella
    Explanation
    Flagella is the correct answer because it is a whip-like appendage that helps bacteria to move. It acts as a propeller, allowing bacteria to swim and navigate through their environment. DNA is the genetic material of the cell, ribosomes are responsible for protein synthesis, and the plasma membrane is the outer boundary of the cell that controls what enters and exits. None of these cell parts are specifically involved in movement, making flagella the most suitable option for the given question.

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  • 17. 
    Which bacteria cell part goes in the box labelled b and is used to make proteins? - ProProfs

    Which bacteria cell part goes in the box labelled b and is used to make proteins?

    • Flagella

    • DNA

    • Ribosomes

    • Cell Wall

    Correct Answer
    A. Ribosomes
    Explanation
    Ribosomes are the correct answer for the given question. Ribosomes are responsible for protein synthesis in bacteria cells. They are the cellular structures where proteins are made by assembling amino acids together according to the instructions encoded in the DNA. Therefore, ribosomes play a crucial role in the production of proteins in bacteria.

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  • 18. 

    Bacteria are prokaryotes.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Bacteria are classified as prokaryotes because they lack a nucleus and other membrane-bound organelles. Instead, their genetic material is located in a single circular chromosome in the cytoplasm. Prokaryotes also lack complex internal structures, such as mitochondria or endoplasmic reticulum. Bacteria reproduce through binary fission and can be found in various environments, including soil, water, and living organisms. Therefore, the statement "Bacteria are prokaryotes" is true.

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  • 19. 

    The ability to resist disease is called

    • Taxonomy

    • Immunity

    • Antigens

    • Immunosuppression

    Correct Answer
    A. Immunity
    Explanation
    The term "immunity" refers to the ability of an organism to resist or fight off diseases. It is the body's defense mechanism against harmful pathogens such as bacteria, viruses, and parasites. Immunity can be acquired naturally through exposure to diseases or artificially through vaccination. It involves the production of specific antibodies and immune cells that recognize and destroy foreign substances in the body.

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  • 20. 

    Which 3 shapes are possible for bacteria?

    • Round

    • Rod

    • Spiral

    • Square

    Correct Answer(s)
    A. Round
    A. Rod
    A. Spiral
    Explanation
    Bacteria can have different shapes, and the three possible shapes mentioned in the answer are round, rod, and spiral. Round bacteria are called cocci, and they have a spherical shape. Rod-shaped bacteria are called bacilli, and they have a cylindrical shape. Spiral bacteria, as the name suggests, have a spiral or helical shape. These shapes are common among different types of bacteria and can be observed under a microscope. However, square-shaped bacteria are not commonly found in nature, making it an incorrect option.

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  • 21. 

    A corn farmer chooses the most productive plants to gather seeds and replants.  This is

    • Natural selection

    • Artificial selection

    • Delicious with butter!

    • Biochemical evidence

    Correct Answer
    A. Artificial selection
    Explanation
    Artificial selection refers to the process in which humans deliberately select and breed certain organisms with desirable traits to enhance their productivity or quality. In the given scenario, the corn farmer is actively choosing the most productive plants to collect seeds from and replant, thereby influencing the genetic makeup of future generations of corn plants. This intentional selection and breeding of plants by the farmer demonstrates the concept of artificial selection.

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  • 22. 

    Vaccines cause your body to create adaptive immunity.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines work by introducing a weakened or inactive form of a pathogen into the body, which triggers an immune response. This response includes the production of antibodies and the activation of immune cells that recognize and remember the pathogen. This process is known as adaptive immunity because it adapts and prepares the body to fight off future infections from the same pathogen. Therefore, the statement that vaccines cause your body to create adaptive immunity is true.

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  • 23. 

    Vaccines have saved numerous lives.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines have been proven to be highly effective in preventing the spread of infectious diseases and have played a crucial role in saving countless lives throughout history. By stimulating the immune system to recognize and fight specific pathogens, vaccines help individuals develop immunity without having to experience the full-blown illness. This not only protects vaccinated individuals but also helps to create herd immunity, reducing the overall transmission of diseases within a population. Therefore, it is true that vaccines have saved numerous lives.

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  • 24. 

    When two parent cells join together to form offspring it is

    • Asexual reproduction

    • Sexual reproduction

    • Meiosis

    Correct Answer
    A. Sexual reproduction
    Explanation
    When two parent cells join together to form offspring, it is considered sexual reproduction. In sexual reproduction, the genetic material from both parents is combined to create a unique offspring. This process involves the fusion of gametes, such as sperm and egg cells, which contain half the genetic information of the parent. This genetic recombination leads to genetic diversity and variation among offspring, allowing for adaptation and evolution. Asexual reproduction, on the other hand, involves the production of offspring without the involvement of gametes or the fusion of genetic material from two parents.

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  • 25. 

    If you currently have a cold, viruses inside your are undergoing the lytic cycle.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When you have a cold, the viruses responsible for causing the cold are indeed undergoing the lytic cycle. The lytic cycle is a process in which a virus infects a host cell, takes control of its machinery, replicates itself, and then causes the cell to burst, releasing new viruses to infect other cells. In the case of a cold, the viruses infect the cells in your respiratory system, causing symptoms such as congestion, coughing, and sneezing. Therefore, the statement "If you currently have a cold, viruses inside you are undergoing the lytic cycle" is true.

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  • 26. 

    A virus consists of

    • Genetic material and a cell membrane.

    • Genetic material and a protein coat.

    • Nucleosome and injectors.

    Correct Answer
    A. Genetic material and a protein coat.
    Explanation
    A virus is a microscopic infectious agent that contains genetic material, either DNA or RNA, which is surrounded by a protein coat called a capsid. The genetic material carries the instructions for the virus to replicate and infect host cells. The protein coat provides protection to the genetic material and helps the virus attach to and enter host cells. Therefore, the correct answer is "genetic material and a protein coat."

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  • 27. 

    Transitional fossils can show how species changed over time.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Transitional fossils provide evidence of evolutionary changes that occurred over time. These fossils exhibit characteristics of both ancestral and descendant species, indicating a transitional stage in the evolutionary process. By studying these fossils, scientists can observe the gradual changes in species' traits and gain insights into the mechanisms of evolution. Therefore, it is correct to say that transitional fossils can show how species changed over time.

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  • 28. 

    Which choices is the BEST definition of evolution?

    • Genetic differences in a species

    • Parents passing traits to offspring

    • The appearance of new life forms

    • The change in species over time

    Correct Answer
    A. The change in species over time
    Explanation
    Evolution refers to the gradual change in species over time. It involves the accumulation of genetic differences within a population, which leads to the development of new traits and the emergence of new life forms. This definition encompasses the concept of genetic variation and the passing of traits from parents to offspring, but it also emphasizes the broader idea of species evolving and adapting to their environment over long periods.

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  • 29. 

    Which answer best shows an animal's adaptation to the tropical rain forest?

    • Camouflage in a tree frog

    • Winter migration of birds from Pennsylvania to Georgia

    • Variation in colors of tropical birds

    Correct Answer
    A. Camouflage in a tree frog
    Explanation
    The best answer that shows an animal's adaptation to the tropical rainforest is camouflage in a tree frog. This is because the ability of the tree frog to blend in with its surroundings helps it avoid predators and increases its chances of survival in the dense and diverse tropical rainforest environment.

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  • 30. 

    You should NOT use anti-bacterial soap because it doesn't remove any more bacteria than regular soap.  Also it increases antibiotic resistance.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Using anti-bacterial soap is not recommended because it does not effectively remove more bacteria compared to regular soap. Additionally, it has been found to contribute to the development of antibiotic resistance.

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  • 31. 

    Vaccines have wiped out some diseases such as smallpox in some areas.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines have been successful in eradicating certain diseases like smallpox in certain regions. This means that these diseases are no longer present or have been significantly reduced in those areas due to the widespread use of vaccines. The effectiveness of vaccines in eliminating diseases is well-documented and has been a major achievement in public health. Therefore, the statement "Vaccines have wiped out some diseases such as smallpox in some areas" is true.

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  • 32. 

    You have more bacterial cells in you than human cells.  (Recall that bacterial cells are very small compared to your cells.)

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because bacterial cells are much smaller in size compared to human cells, which means that even though there are fewer bacterial cells, they can still outnumber the larger human cells in terms of quantity.

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  • 33. 

    How does a Virus infect a living thing?

    • It infects a host cell and causes the host cell to make more viruses.

    • It only affects plants.

    • It causes disease only in bacterial cells.

    • It infects the extracellular fluid of organisms.

    Correct Answer
    A. It infects a host cell and causes the host cell to make more viruses.
    Explanation
    A virus infects a living thing by entering a host cell and using the host cell's machinery to replicate itself. Once inside the host cell, the virus takes control of the cell's functions and forces it to produce more viruses. This process eventually leads to the destruction of the host cell and the release of new viruses, which can then go on to infect other cells and continue the cycle of infection.

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  • 34. 

    Viruses do not always need a host cell to replicate (make more copies of themselves).

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Viruses are obligate intracellular parasites, meaning they cannot replicate without a host cell. They rely on the host cell's machinery to reproduce and make more copies of themselves. Without a host cell, viruses cannot carry out their replication process. Therefore, the statement that viruses do not always need a host cell to replicate is false.

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  • 35. 

    Why do drug addicts have a hard time staying off drugs?

    • Because their brains need more chemicals to be normal, and these changes last a LONG time.

    • Because they have "addictive personalities".

    • Because they have killed so many brain cells with drugs that their reasoning ability is no longer good.

    Correct Answer
    A. Because their brains need more chemicals to be normal, and these changes last a LONG time.
    Explanation
    Drug addiction is a complex condition that affects the brain and behavior of individuals. Continued drug use alters the brain's normal functioning and causes chemical imbalances. Over time, the brain becomes dependent on the drugs to function properly, leading to a tolerance and the need for higher doses to achieve the same effects. When drug addicts try to quit, their brains struggle to regain balance without the presence of drugs, causing intense cravings and withdrawal symptoms. These changes in the brain can persist for a long time, making it difficult for drug addicts to stay off drugs and maintain sobriety.

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  • 36. 

    What is the LAST step of the lytic cycle?

    • The host cell bursts, releasing the newly made viruses.

    • The virus finds a host cell.

    • The virus injects its DNA/RNA into the host cell.

    • The virus engulfs the host cell.

    Correct Answer
    A. The host cell bursts, releasing the newly made viruses.
    Explanation
    The last step of the lytic cycle is when the host cell bursts, releasing the newly made viruses. This occurs after the virus has injected its DNA/RNA into the host cell and the virus has taken over the cellular machinery to replicate itself. Once the new viruses are produced, they cause the host cell to burst, allowing the viruses to spread and infect other cells.

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  • 37. 

    Breeding only the cows that give the most milk is an example of

    • Artificial selection

    • Natural selection

    Correct Answer
    A. Artificial selection
    Explanation
    Breeding only the cows that give the most milk is an example of artificial selection. Artificial selection is the process of intentionally selecting and breeding individuals with desired traits in order to produce offspring with those traits. In this case, farmers are selectively breeding cows that produce the most milk, with the goal of increasing milk production in future generations. This is a human-driven process, as farmers are actively choosing which cows to breed based on their milk production, rather than relying on natural factors such as survival of the fittest.

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  • 38. 

    A normal male will have these sex chromosomes:

    • XX

    • XY

    • YY

    • YX

    Correct Answer
    A. XY
    Explanation
    The sex chromosomes determine an individual's biological sex. In humans, females have two X chromosomes (XX) while males have one X and one Y chromosome (XY). Therefore, the correct answer is XY, as it represents the typical sex chromosomes found in a normal male.

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  • 39. 

    Vaccines cause your body to make antibodies which can identify and fight the pathogen.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines work by introducing a weakened or inactivated form of a pathogen into the body. This triggers an immune response, causing the body to produce antibodies that can recognize and fight the pathogen. These antibodies remain in the body, providing immunity against future infections by the same pathogen. Therefore, the statement that vaccines cause the body to make antibodies that can identify and fight the pathogen is true.

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  • 40. 
    The flounder has developed a flat sandy-colored body that allows it to lie on the ocean floor where it cannot be seen by predators or prey. The flounder's phenotype is an example of _________________. - ProProfs

    The flounder has developed a flat sandy-colored body that allows it to lie on the ocean floor where it cannot be seen by predators or prey. The flounder's phenotype is an example of _________________.

    • Genetic engineering

    • An adaptation

    • Succession

    • A clone

    Correct Answer
    A. An adaptation
    Explanation
    The flounder's phenotype, which is its flat sandy-colored body, is an adaptation. This means that it is a trait that has evolved over time in response to its environment, allowing the flounder to better survive and reproduce. The flat body helps the flounder blend in with the ocean floor, making it difficult for predators or prey to spot it. This adaptation increases the flounder's chances of survival and is a result of natural selection acting on its genetic variation.

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  • 41. 

    Bacteria are _______, meaning they have _______ _____________________

    • Prokaryotes; no nucleus

    • Prokaryotes; no DNA

    • Eukaryotes; no nucleus

    • Eukaryotes; no DNA

    Correct Answer
    A. Prokaryotes; no nucleus
    Explanation
    Remember, bacteria are examples of prokaryotes. This means they have NO nucleus. Remember PRO= NO

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  • 42. 

    The tall allele, T, is dominant to the short allele, t, in Mendel’s pea plants. You examine a pea plant that exhibits the tall phenotype. What is its genotype?

    • TT

    • Tt

    • Tt

    • TT and Tt are both possible

    Correct Answer
    A. TT and Tt are both possible
    Explanation
    Since the tall allele, T, is dominant to the short allele, t, in Mendel's pea plants, a pea plant that exhibits the tall phenotype could have either the genotype TT (homozygous dominant) or Tt (heterozygous). Both genotypes would result in the tall phenotype, so TT and Tt are both possible genotypes for the given pea plant.

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  • 43. 

    Viruses have genetic material which may be DNA or RNA.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Viruses have genetic material that can be either DNA or RNA. This means that viruses can have either a DNA or an RNA genome, which carries the instructions for their replication and survival. This genetic material allows viruses to hijack host cells and use their machinery to reproduce and spread. Therefore, the statement "Viruses have genetic material which may be DNA or RNA" is true.

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  • 44. 

    Most vaccines are made from pathogens.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vaccines are typically made from weakened or inactivated forms of pathogens or from pieces of the pathogen, such as proteins or sugars. By introducing these harmless versions of the pathogen into the body, vaccines stimulate the immune system to recognize and remember the pathogen, providing protection against future infections. Therefore, it is true that most vaccines are made from pathogens.

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  • 45. 
    Salamanders with longer tongues tend to live more years than those with short tongues. Long tongues probably enable the salamander to catch more food. This is an example of Darwin's concept of __________. - ProProfs

    Salamanders with longer tongues tend to live more years than those with short tongues. Long tongues probably enable the salamander to catch more food. This is an example of Darwin's concept of __________.

    • Survival of the fittest

    • Evolution of crossing over

    • The tree of life

    Correct Answer
    A. Survival of the fittest
    Explanation
    This is an example of Darwin's concept of survival of the fittest. Salamanders with longer tongues are more likely to catch more food, which increases their chances of survival and reproduction. Over time, individuals with longer tongues will have a higher fitness and will be more likely to pass on their advantageous trait to future generations. This process leads to the evolution of longer tongues in the salamander population.

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  • 46. 

    How is an allele best described?

    • Form of a gene

    • One haploid cell

    • Part of a chromosome

    • Entire genome

    Correct Answer
    A. Form of a gene
    Explanation
    An allele is best described as a form of a gene. Alleles are different versions of a gene that can exist at the same locus on a chromosome. They can vary in their DNA sequence and can determine different traits or characteristics in an organism. Therefore, the correct answer is "form of a gene".

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  • 47. 

    What are genes?

    • Lipids that code for proteins

    • Segments of DNA

    • Entire chromosomes

    • Denim

    Correct Answer
    A. Segments of DNA
    Explanation
    Genes are segments of DNA that contain the instructions for building proteins. They are the basic units of heredity and determine the traits and characteristics of an organism. Genes are responsible for transmitting genetic information from one generation to the next and play a crucial role in the development and functioning of living organisms.

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  • 48. 

    When you have a virus like the one that causes cold sores in the lysogenic cycle, a trigger such as stress or other illness can cause the virus to switch from the lysogenic cycle to the lytic cycle and you will develop a cold sore.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When a virus like the one causing cold sores is in the lysogenic cycle, it remains dormant within the host's cells. However, certain triggers such as stress or other illnesses can activate the virus, causing it to switch to the lytic cycle. In the lytic cycle, the virus replicates rapidly and causes symptoms, leading to the development of a cold sore. Therefore, the statement is true.

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  • 49. 

    What determines an organism's fitness?

    • How physically strong it is

    • How much it changes to fit its environment within its life

    • How well it can survive within its environment

    • Where it fits in on the food chain

    Correct Answer
    A. How well it can survive within its environment
    Explanation
    An organisms fitness is its ability to survive within its environment. Organisms with higher fitness survive, while those with lower fitness die out- hence, "survival of the fittest". An animals fitness is based on inherited traits- organisms don't try to be more perfect; rather, the fitter ones survive and pass those traits on to their descendants.

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Quiz Review Timeline (Updated): Mar 20, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 04, 2017
    Quiz Created by
    Mooneyja

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