Living Environment Midterm Regents Exam

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Living Environment Midterm Regents Exam - Quiz

Prepare to ace your Living Environment Midterm Regents Exam with our engaging and comprehensive practice questions! Get ready to dive into the fascinating world of biology, ecology, and the living organisms that surround us.

Our quiz is specially designed to help you review and test your knowledge in preparation for the big exam. Explore a wide range of topics, from cell structure and functions to genetics, human body systems, and the delicate balance of ecosystems. With each question, you'll sharpen your understanding of key concepts and reinforce your grasp of scientific principles.

From the tiniest cells to the grandeur of Read moreecological systems, this quiz will take you on a thrilling journey through the fascinating world of Living Environment. Put your knowledge to the test and boost your confidence as you tackle each question.

So, don't stress about your upcoming exam. Dive into our Living Environment Midterm Regents Exam practice questions and let your scientific curiosity guide you to success! Get ready to shine and show off your understanding of the living world. Are you up for the challenge? Let the quiz begin!


Questions and Answers
  • 1. 

    Describe one example of diffusion in the human body.

  • 2. 

    Vaccines play an essential role in the ability of the body to resist certain diseases. Describe the contents of a vaccine.

  • 3. 

    Vaccines play an essential role in the ability of the body to resist certain diseases. Explain how a vaccination results in the long-term ability of the body to resist disease.

  • 4. 

    Base your answer on the diagram below and your knowledge of biology. Which statement describes two unsafe laboratory practices represented in the diagram?

    • A.

      The opening of the test tube is pointed toward the student and the student is not wearing goggles.

    • B.

      The beaker has water in it and the flame is under the tripod.

    • C.

      The test tube is unstoppered, and the student is not wearing goggles.

    • D.

      The flame is too high and the test tube is unstoppered.

    Correct Answer
    A. The opening of the test tube is pointed toward the student and the student is not wearing goggles.
    Explanation
    The opening of the test tube is pointed toward the student and the student is not wearing goggles. This is an unsafe laboratory practice because if the test tube contains any hazardous substances or if a reaction occurs, the contents could potentially splash or spray towards the student's face, causing harm to their eyes. Wearing goggles is essential in a laboratory setting to protect the eyes from any potential hazards.

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  • 5. 

    Diagrams, tables, and graphs are used by scientists mainly to

    • A.

       test a hypothesis

    • B.

       predict the independent variable

    • C.

      Design a research plan for an experiment

    • D.

      Organize data

    Correct Answer
    D. Organize data
    Explanation
    Scientists use diagrams, tables, and graphs to organize data. These visual representations help in presenting and analyzing data in a clear and concise manner. By organizing data in this way, scientists can easily identify patterns, trends, and relationships between variables. This allows them to draw conclusions, make interpretations, and support their hypotheses or research findings. Therefore, organizing data is the main purpose of using diagrams, tables, and graphs in scientific research.

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  • 6. 

    The diagram below represents levels of organization in living things. Which term would best describe X?

    • A.

      Stomach

    • B.

      Organelle

    • C.

      Tissue

    • D.

      Human

    Correct Answer
    C. Tissue
    Explanation
    The diagram represents levels of organization in living things, and the term that best describes X is "tissue". Tissue refers to a group of similar cells that work together to perform a specific function. In this context, X is likely a collection of cells that are specialized for a specific function within an organism, such as the stomach tissue.

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  • 7. 

    The absorption and distribution of materials within an organism is a life function known as

    • A.

      TRANSPORT

    • B.

      SYNTHESIS

    • C.

      REPRODUCTION

    • D.

      LOCOMOTION

    Correct Answer
    A. TRANSPORT
    Explanation
    Transport refers to the absorption and distribution of materials within an organism. It is a vital life function that allows for the movement of nutrients, gases, and other essential substances throughout the body. This process ensures that cells receive the necessary resources for their functioning and removes waste products. Without proper transport, organisms would not be able to maintain homeostasis and carry out essential metabolic processes.

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  • 8. 

    Which graph of blood sugar levels over 12 hours best illustrates the concept of dynamic equilibrium in the body?

    • A.

      Graph 1

    • B.

      Graph 2

    • C.

      Graph 3

    • D.

      Graph 4

    Correct Answer
    C. Graph 3
    Explanation
    Graph 3 best illustrates the concept of dynamic equilibrium in the body because it shows blood sugar levels fluctuating within a relatively narrow range over the 12-hour period. This suggests that the body's regulatory mechanisms are working to maintain a balance between glucose production and utilization, resulting in a stable blood sugar level. The other graphs either show a constant increase or decrease in blood sugar levels, which do not represent dynamic equilibrium.

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  • 9. 

    Which situation is not an example of maintaining dynamic equilibrium in an organism?

    • A.

      Water passes into an animal cell, causing it to swell.

    • B.

      The release of insulin lowers the blood sugar level in a human after eating a meal.

    • C.

      Guard cells contribute to the regulation of water content in a geranium plant.

    • D.

      A runner perspires while running a race on a hot summer day.

    Correct Answer
    A. Water passes into an animal cell, causing it to swell.
    Explanation
    The situation in which water passes into an animal cell, causing it to swell is not an example of maintaining dynamic equilibrium in an organism. Dynamic equilibrium refers to the balance or stability that is maintained within an organism despite changes in the external environment. In this situation, the influx of water into the animal cell disrupts the balance and causes it to swell, indicating a loss of equilibrium.

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  • 10. 

    Feedback interactions in the human body are significant because they

    • A.

      Regulate the shape of molecules involved in cellular communication.

    • B.

      Determine the diversity necessary for evolution to occur.

    • C.

      Keep the internal body environment within its normal range.

    • D.

      Direct the synthesis of altered genes that are passed on to every cell in the body.

    Correct Answer
    C. Keep the internal body environment within its normal range.
    Explanation
    Feedback interactions in the human body are significant because they help keep the internal body environment within its normal range. These feedback mechanisms allow the body to monitor and regulate various physiological processes such as temperature, pH balance, and hormone levels. When the body detects any deviation from the normal range, feedback mechanisms are activated to restore balance and maintain homeostasis. This is crucial for the proper functioning of cells, tissues, and organs, ensuring their optimal performance and overall health.

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  • 11. 

    Which response usually occurs after an individual receives a vaccination for the influenza virus?

    • A.

      Antibodies against the virus form in the blood. 

    • B.

      Enzymes released from platelets hydrolyze the virus. 

    • C.

      Antigens from the vaccine deactivate the virus. 

    • D.

      Hormones in the blood inhibit reproduction of the virus.

    Correct Answer
    A. Antibodies against the virus form in the blood. 
    Explanation
    After receiving a vaccination for the influenza virus, the body's immune system recognizes the antigens present in the vaccine as foreign and mounts an immune response. This response involves the production of antibodies specific to the influenza virus. These antibodies then circulate in the blood, ready to recognize and neutralize the virus if the individual becomes infected. Therefore, the correct response usually occurring after receiving the influenza vaccine is the formation of antibodies against the virus in the blood.

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  • 12. 

    Which elements are present in all organic compounds?   

    • A.

      Nitrogen and carbon

    • B.

      Nitrogen and oxygen

    • C.

      Hydrogen and oxygen

    • D.

      Hydrogen and carbon

    Correct Answer
    D. Hydrogen and carbon
    Explanation
    Organic compounds are compounds that contain carbon atoms bonded to hydrogen atoms. Carbon is the essential element in organic compounds as it can form stable covalent bonds with other carbon atoms and various other elements. Hydrogen is also present in all organic compounds as it forms bonds with carbon atoms. Therefore, the correct answer is hydrogen and carbon.

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  • 13. 

    An enzyme that works best in an acidic environment would function best at a pH of

    • A.

      11

    • B.

      9

    • C.

      3

    • D.

      7

    Correct Answer
    C. 3
    Explanation
    Enzymes are proteins that catalyze chemical reactions in the body. The pH level of the environment can greatly affect the enzyme's activity. An enzyme that works best in an acidic environment would function best at a low pH. Option 3, pH 3, is the lowest pH value among the given options, indicating a highly acidic environment. Therefore, option 3 is the correct answer.

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  • 14. 

    A student placed a food sample in a test tube. She added Benedict's solution to the model and heated the test tube in a boiling water bath. After a few minutes, no color change was observed. Which conclusion could correctly be drawn?

    • A.

      Protein is present.

    • B.

      Glucose is present.

    • C.

      Protein is not present.

    • D.

      Glucose is not present.

    Correct Answer
    D. Glucose is not present.
    Explanation
    The student used Benedict's solution to test for the presence of glucose. Benedict's solution is used to detect the presence of reducing sugars, such as glucose, which can undergo a chemical reaction with the solution to produce a color change. Since no color change was observed after heating the test tube, it can be concluded that glucose is not present in the food sample.

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  • 15. 

    Base your answer on the following question on the graph below and your knowledge of biology. Which factor most likely accounts for the change in the rate of enzyme action as the temperature increases from 40°C to 58°C?

    • A.

      The high temperature causes the shape of the enzyme to be altered.

    • B.

      Not enough substrate is present at these high temperatures

    • C.

      Excess acids have been building up, causing the enzyme to become fatigued.

    • D.

      Too much substrate is present at these high temperatures.

    Correct Answer
    A. The high temperature causes the shape of the enzyme to be altered.
    Explanation
    The high temperature causes the shape of the enzyme to be altered. This is because enzymes are proteins and their structure is sensitive to temperature changes. As the temperature increases, the enzyme molecules vibrate more and this disrupts the weak bonds that maintain the enzyme's shape. As a result, the enzyme's active site, where the substrate binds, may change shape and become less effective in catalyzing the reaction. This explains the change in the rate of enzyme action as the temperature increases from 40°C to 58°C.

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  • 16. 

    A red onion cell has changed, as represented in the diagram below. Which substance is most likely responsible for the change?

    • A.

      Saltwater

    • B.

      Light

    • C.

      Darkness

    • D.

      Distilled water

    Correct Answer
    A. Saltwater
    Explanation
    The red onion cell has changed, which suggests that it has undergone a process called plasmolysis. Plasmolysis occurs when a cell loses water and shrinks due to a hypertonic environment. Saltwater is a hypertonic solution, meaning it has a higher concentration of solutes compared to the cell's cytoplasm. When the red onion cell is placed in saltwater, water moves out of the cell through osmosis, causing the cell to shrink and change its appearance. Therefore, saltwater is most likely responsible for the change in the red onion cell.

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  • 17. 

    Which substance is a suitable indicator for detecting the presence of starch in a plant cell?

    • A.

      Bromothymol blue

    • B.

      PH paper

    • C.

      Fehling's solution

    • D.

      Iodine solution

    Correct Answer
    D. Iodine solution
    Explanation
    Iodine solution is a suitable indicator for detecting the presence of starch in a plant cell. Iodine reacts with starch to form a dark blue or black color, indicating the presence of starch. This reaction occurs due to the formation of a complex between iodine molecules and the helical structure of starch molecules. Therefore, when iodine solution is added to a plant cell, if starch is present, the solution will turn dark blue or black, confirming the presence of starch.

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  • 18. 

    How does the control setup in an experiment differ from the other setups in the same investigation?

    • A.

      It utilizes a different method of data collection.

    • B.

      It differs in the one variable being tested.

    • C.

      It tests a different hypothesis.

    • D.

      It has more variables.

    Correct Answer
    B. It differs in the one variable being tested.
    Explanation
    The control setup in an experiment differs from the other setups in the same investigation because it focuses on testing a specific variable. The control setup is designed to provide a baseline or reference point by keeping all variables constant except for the one being tested. This allows researchers to compare the effects of the tested variable with the control group, which helps determine the causal relationship between the variable and the outcome. By isolating and manipulating one variable at a time, the control setup helps ensure that any observed changes can be attributed to the variable being tested.

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  • 19. 

    A child has brown hair and brown eyes. His father has brown hair and blue eyes. His mother has red hair and brown eyes. The best explanation for the child having brown hair and eyes is that.

    • A.

      A gene mutation occurred that resulted in brown hair and brown eyes.

    • B.

      Gene expression must change in each generation so evolution can occur.

    • C.

      The child received genetic information from each parent.

    • D.

      Cell from his mother’s eyes were present in the fertilized egg. 

    Correct Answer
    C. The child received genetic information from each parent.
    Explanation
    The child received genetic information from each parent is the best explanation for the child having brown hair and eyes. This is because hair color and eye color are both determined by genes, and individuals inherit genes from their parents. The child's father has brown hair, which means he likely carries the gene for brown hair. The child's mother has brown eyes, which means she likely carries the gene for brown eyes. When the child was conceived, they received genetic information from both parents, including the genes for brown hair and brown eyes, resulting in the child having these traits.

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  • 20. 

    The diagram below represents a genetic procedure. Which statement best describes the outcome of this procedure?

    • A.

      Bacterial cells will destroy defective human genetic material.

    • B.

      Bacterial cells may form a multicellular embryo.

    • C.

      The inserted human DNA will change harmful bacteria to harmless ones.

    • D.

      The inserted human DNA may direct the synthesis of human proteins.

    Correct Answer
    D. The inserted human DNA may direct the synthesis of human proteins.
    Explanation
    The diagram represents a genetic procedure, suggesting that the procedure involves the insertion of human DNA. The outcome of this procedure is described as the inserted human DNA may direct the synthesis of human proteins. This suggests that the genetic procedure is aimed at transferring genetic material from humans to another organism, such as bacteria, in order to produce human proteins.

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  • 21. 

    Viral activity is represented in the diagram below. Invading the host cell enables the virus to

    • A.

      Reproduce

    • B.

      Obtain nutrients

    • C.

      Increase in its size

    • D.

      Synthesized need for oxygen

    Correct Answer
    A. Reproduce
    Explanation
    The diagram represents viral activity, and one of the activities that viruses engage in is reproduction. By invading the host cell, the virus is able to use the cell's machinery to replicate its genetic material and produce more virus particles. This allows the virus to spread and infect more cells within the host organism. The other options mentioned in the question, such as obtaining nutrients, increasing in size, and synthesizing the need for oxygen, are not directly related to viral reproduction.

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  • 22. 

    Feedback interactions in the human body are significant because they

    • A.

      Regulate the shape of molecules involved in cellular communication

    • B.

      Determine the diversity necessary for evolution to occur

    • C.

      Keep the internal body environment within its normal range

    • D.

      Direct the synthesis of altered genes that are passed on to every cell in the body

    Correct Answer
    C. Keep the internal body environment within its normal range
    Explanation
    Feedback interactions in the human body are significant because they keep the internal body environment within its normal range. These interactions involve sensing changes in the body's internal environment and initiating responses to maintain homeostasis. By continuously monitoring and adjusting various physiological processes, feedback mechanisms ensure that essential parameters such as temperature, pH, and hormone levels remain within optimal ranges for proper functioning of the body. This helps to maintain overall stability and allows cells, tissues, and organs to function efficiently.

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  • 23. 

    Even though the environment changes, a population that occupies a given geographic area will most likely continue to be found in this area if

    • A.

      Members of the population exceed the carrying capacity

    • B.

      Members of the population decrease in number

    • C.

      Members of the population pass on those genes that result in favorable adaptations

    • D.

      Variations in the population decrease over time

    Correct Answer
    C. Members of the population pass on those genes that result in favorable adaptations
    Explanation
    A population that occupies a given geographic area will most likely continue to be found in this area if members of the population pass on those genes that result in favorable adaptations. This means that individuals who possess traits that are advantageous in their environment are more likely to survive and reproduce, passing on these beneficial traits to future generations. Over time, the population will become better adapted to their environment, increasing their chances of survival and persistence in the area.

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  • 24. 

    One similarity between cell receptors and antibodies is that both

    • A.

      Are highly specific in their actions

    • B.

      Are involved in digestion

    • C.

      Slow the rates of chemical reactions

    • D.

      Are produced by nerve cells

    Correct Answer
    A. Are highly specific in their actions
    Explanation
    Both cell receptors and antibodies are highly specific in their actions. Cell receptors are proteins located on the cell surface that bind to specific molecules, such as hormones or neurotransmitters, and initiate a cellular response. Similarly, antibodies are proteins produced by the immune system that specifically bind to foreign substances, such as viruses or bacteria, and mark them for destruction. This specificity allows both cell receptors and antibodies to target and interact with specific molecules or pathogens, enabling them to carry out their respective functions effectively.

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  • 25. 

    Which statement indicates that individuals have developed immunity to the Ebola virus?

    • A.

      The individuals who survived were able to produce antibodies against the Ebola virus.

    • B.

      80% of the population had a natural immunity to the Ebola virus.

    • C.

      80% of the population was infected with a viral antigen. 

    • D.

      The individuals who survived were not exposed to the Ebola antigens.

    Correct Answer
    A. The individuals who survived were able to produce antibodies against the Ebola virus.
    Explanation
    The correct answer indicates that individuals have developed immunity to the Ebola virus because producing antibodies against the virus is a sign of an immune response. When individuals are exposed to the Ebola virus and their immune system successfully fights off the infection, it produces antibodies to recognize and neutralize the virus in case of future exposure. This immune response demonstrates that the individuals have developed immunity to the Ebola virus.

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  • Aug 01, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 22, 2019
    Quiz Created by
    Melissa Candice
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