Biology B1 Topic 1: Classification, Variation And Inheritance
Anneyosayo wassup, i made this quiz to help people who has difficulty with gcse biology b1 and if your wondering the exam board is mainly edexcel but you can use it if you want to.
Questions and Answers
- 1.
The definition of chordata is
- A.
Another word for vertebrates
- B.
Another word for non-vertebrates
- C.
Another word for cold-blooded
- D.
Another word for warm-blooded
Correct Answer
A. Another word for vertebratesExplanation
The definition of chordata refers to vertebrates, which are animals that possess a backbone or spinal column. This group includes mammals, birds, reptiles, amphibians, and fish.Rate this question:
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- 2.
Some adaptations are highly specialized
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Some adaptations in nature are highly specialized, meaning they are specifically tailored to suit a particular environment or lifestyle. These adaptations may include physical characteristics, behavior, or physiological changes that enable an organism to survive and thrive in a specific niche. Specialized adaptations often allow organisms to exploit unique resources or avoid competition with other species. This specialization is a result of natural selection, where individuals with advantageous traits are more likely to survive and reproduce, passing on these traits to future generations. Therefore, it is true that some adaptations are highly specialized.Rate this question:
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- 3.
Animals are the only organisms that are adapted to their habitats
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement that "animals are the only organisms that are adapted to their habitats" is not true. Organisms from various kingdoms, such as plants, fungi, and bacteria, are also adapted to their habitats. For example, plants have evolved features like root systems and photosynthesis to thrive in specific environments, while bacteria have adapted to extreme conditions like hot springs or deep-sea vents. Therefore, animals are not the only organisms that are adapted to their habitats.Rate this question:
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- 4.
Why are viruses considered as non-living
- A.
Because they dont have a nucleus
- B.
They are made up of cells
- C.
Because they dont meet the criteria of the "7 ways of life"
- D.
They act like parasites
Correct Answer
C. Because they dont meet the criteria of the "7 ways of life"Explanation
Viruses are considered non-living because they do not meet the criteria of the "7 ways of life." The "7 ways of life" refer to the characteristics that define living organisms, such as the ability to grow, reproduce, and respond to stimuli. While viruses can replicate and evolve, they lack essential cellular machinery and cannot carry out metabolic processes on their own. They require a host cell to reproduce and are dependent on the host's cellular machinery for their survival. Therefore, they do not meet the criteria to be classified as living organisms.Rate this question:
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- 5.
Chromosomes are found in the ................ of each cell
Correct Answer
nucleusExplanation
Chromosomes are found in the nucleus of each cell. The nucleus is a membrane-bound organelle that contains the genetic material of the cell, including the chromosomes. Chromosomes are thread-like structures made up of DNA and proteins, and they carry the genes that determine an organism's traits. They are located within the nucleus, which serves as the control center of the cell and houses the DNA. Therefore, the correct answer is nucleus.Rate this question:
- 6.
Sickle diease is a mutation causing the haemoglobin in the cells to change shape, meaning it will carry less oxygen around the body. identify the problems caused by this diease
- A.
Weakness
- B.
Tiredness
- C.
Wieght loss
- D.
Infection in the lungs
- E.
Pain(sickle cell crisis)
Correct Answer(s)
A. Weakness
B. Tiredness
E. Pain(sickle cell crisis)Explanation
Sickle cell disease is a genetic mutation that causes the shape of the hemoglobin in cells to change. This altered shape leads to a reduced ability to carry oxygen throughout the body. As a result, individuals with sickle cell disease may experience weakness and tiredness due to insufficient oxygen supply to the muscles and tissues. Additionally, the abnormal sickle-shaped cells can cause blockages in blood vessels, leading to episodes of severe pain known as sickle cell crisis. Therefore, weakness, tiredness, and pain are the problems caused by sickle cell disease.Rate this question:
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- 7.
Hybrids cannot breed to produce offspring that can also breed
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Hybrids are the result of crossing two different species that are closely related. Due to the genetic differences between the parent species, hybrids often have reduced fertility or are completely infertile. This means that they cannot successfully reproduce and produce offspring that are capable of reproducing themselves. Therefore, the statement that hybrids cannot breed to produce offspring that can also breed is true.Rate this question:
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- 8.
Which of the following is an australian animal which is also a mix of both mammal and bird
- A.
Ostrich
- B.
Platterpuss
- C.
Zorse
- D.
Yellowhammer
Correct Answer
B. Platterpuss -
- 9.
Ring species are
- A.
Hybrids
- B.
A chain of related species that are closely connected geographically
- C.
Parent species
- D.
Acquired species with certain characteristics that is caused by the environment
Correct Answer
B. A chain of related species that are closely connected geographicallyExplanation
Ring species are a chain of related species that are closely connected geographically. This means that each species in the chain can interbreed with the adjacent species, but the species at the ends of the chain cannot interbreed. This occurs when a species spreads out geographically, adapting to different environments along the way. Over time, the populations at the ends of the chain accumulate enough genetic differences that they become reproductively isolated from each other. This concept of ring species provides evidence for the gradual nature of evolution and the formation of new species.Rate this question:
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- 10.
Adaptations are the characteristics of an organism that enable it to survive in its environment
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Adaptations refer to the traits or features that an organism possesses, which allow it to survive and thrive in its specific environment. These adaptations can include physical attributes, behaviors, or physiological mechanisms that help the organism to better cope with the challenges and demands of its surroundings. By having these adaptations, organisms are better equipped to find food, avoid predators, withstand extreme temperatures, or any other factors that may pose a threat to their survival. Therefore, it is correct to say that adaptations are the characteristics of an organism that enable it to survive in its environment.Rate this question:
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- 11.
............................... ............................. is one way of speciation occurs
Correct Answer
geograpical isolationExplanation
Geographical isolation is one way in which speciation occurs. This process happens when a population of organisms becomes physically separated by a geographical barrier, such as a mountain range or a body of water. The isolated populations are then subjected to different environmental conditions and face different selection pressures, leading to genetic divergence and the formation of new species over time. Geographical isolation prevents gene flow between populations, allowing for the accumulation of genetic differences and ultimately leading to the development of distinct species.Rate this question:
- 12.
There is no similarities between human DNA and DNA other of mammals such as chimpanzees
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because there are indeed similarities between human DNA and the DNA of other mammals such as chimpanzees. Humans and chimpanzees share a common ancestor and have a high degree of genetic similarity. Studies have shown that approximately 98% of the DNA sequences in humans and chimpanzees are identical, indicating a close evolutionary relationship between the two species.Rate this question:
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- 13.
Bacterial resistance is an example of
- A.
Inheritance
- B.
Fertillisation
- C.
Speciation
- D.
Evolution
Correct Answer
D. EvolutionExplanation
Bacterial resistance is an example of evolution because it involves the process of genetic changes in bacteria populations over time. Bacteria can develop resistance to antibiotics through the accumulation of genetic mutations or the acquisition of resistance genes from other bacteria. This adaptation allows bacteria to survive and reproduce in the presence of antibiotics, leading to the evolution of antibiotic-resistant strains. This process is a clear demonstration of how species can adapt and change in response to their environment, which is a fundamental concept in evolutionary biology.Rate this question:
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- 14.
Punnett squares are not used to predict the probailities of outcomes from crosses
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Punnett squares are used to predict the probabilities of outcomes from crosses. They are a visual tool that helps determine the possible combinations of alleles that can be inherited by offspring. By using Punnett squares, one can calculate the likelihood of different genotypes and phenotypes occurring in the offspring of a genetic cross. Therefore, the statement that Punnett squares are not used to predict the probabilities of outcomes from crosses is false.Rate this question:
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- 15.
A change in the gene's DNA is called a
- A.
Haemoglobin
- B.
Gametes
- C.
Mutation
- D.
Chromosomes
Correct Answer
C. MutationExplanation
A change in the gene's DNA is called a mutation. Mutations can occur spontaneously or be caused by external factors such as radiation or chemicals. These changes can alter the sequence of nucleotides in the DNA, which can lead to changes in the structure or function of the protein that the gene codes for. Mutations can have various effects, ranging from no noticeable impact to causing genetic disorders or diseases.Rate this question:
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- 16.
Cystic fibrosis and sickle cell disease are examples of
- A.
Monohybrids
- B.
Inherited recessive genetic disorders
- C.
Pedigree analysis
- D.
Osmoregulation
Correct Answer
B. Inherited recessive genetic disordersExplanation
Cystic fibrosis and sickle cell disease are examples of inherited recessive genetic disorders because they are caused by mutations in specific genes that are inherited from both parents. In both conditions, the affected individuals have two copies of the mutated gene, one from each parent. These disorders are recessive because individuals who have only one copy of the mutated gene (carriers) do not show symptoms of the disease. The inheritance pattern of these disorders can be traced through generations using pedigree analysis, but osmoregulation and monohybrids are not directly related to these specific genetic disorders.Rate this question:
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- 17.
A comparision of the DNA of humans and chimpanzees show that these animals share 99% of their DNA. Explain how this is evidence for Darwin's theory of evolution.
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Mar 21, 2023Quiz Edited by
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