Living Environment Regents: MCQ Practice Quiz

45 Questions | Total Attempts: 259

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Living Environment Regents: MCQ Practice Quiz

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Questions and Answers
  • 1. 
    A few bacteria are placed in a nutrient solution. After several hours, thousands of bacteria are present. Which life activities are primarily responsible for this?
    • A. 

      Digestion and movement

    • B. 

      Digestion and reproduction

    • C. 

      Circulation and respiration

    • D. 

      Excretion and coordination

  • 2. 
    Two slides A & B contain Elodea leaves (an aquatic water plant) Slide A is mounted in tap water that is 1% salt and 99% water. Slide B is mounted in a salt solution that is 6% salt and 94 % water. Elodea cells usually contain 1% salt. Ten minutes after the slides were prepared, a microscopic examination of cells in leaves A and B would most likely show evidence that
    • A. 

      Water had moved out of the cells of leaf B

    • B. 

      Salt had moved out of the cells of leaf B

    • C. 

      Water had moved into the cells of leaf A

    • D. 

      Salt had moved into the cells of leaf A

  • 3. 
    One reason a fish that lives in the ocean may have trouble living in a freshwater lake is that
    • A. 

      There are more carnivores in freshwater habitats

    • B. 

      Salt water holds more dissolved nitrogen than freshwater

    • C. 

      More photosynthesis occurs in fresh water than in salt water

    • D. 

      Water concentration in the fish is affected by salt levels in its environment

  • 4. 
    Refer to the following diagram of a beaker with a membrane dividing it into two halves containing two kinds of molecules. Which process explains the change in the positions of molecules after 5 hours?
    • A. 

      Respiration

    • B. 

      Photosynthesis

    • C. 

      Diffusion

    • D. 

      Excretion

  • 5. 
    The diagram shows how an animal is organized. Which label is needed to complete the diagram?
    • A. 

      Atoms

    • B. 

      Molecules

    • C. 

      Organelles

    • D. 

      Tissues

  • 6. 
    In the diagram of the amoeba ( a single-celled organism) the arrows show the direction of movement of various substances.Which of the cell's life activities are represented by the arrows? 
    • A. 

      Digestions, reproduction, and respiration

    • B. 

      Excretion, transport, and respiration

    • C. 

      Immunity, digestion, and movement

    • D. 

      Digestion, coordination, and reproduction

  • 7. 
    Which word equation represents the process of photosynthesis?
    • A. 

      Starch -> many glucose molecules

    • B. 

      Glucose + oxygen -> carbon dioxide + water + energy

    • C. 

      Carbon dioxide + water -> glucose + oxygen

    • D. 

      Fats -> sugar molecules

  • 8. 
    Which process removes carbon dioxide from the atmosphere rather than adding it?
    • A. 

      Cellular respiration

    • B. 

      Combustion of gasoline

    • C. 

      Photosynthesis

    • D. 

      Deforestation

  • 9. 
    Which process in plants produces carbon dioxide?
    • A. 

      Respiration

    • B. 

      Photosynthesis

    • C. 

      Coordination

    • D. 

      Digestion

  • 10. 
    Which statement best describes the enzyme represented in the following graphs?
    • A. 

      This enzyme works best at a temperature of 37 degrees C and a pH of 8.

    • B. 

      This enzyme works best at a temperature of 55 degrees C and a pH of 12.

    • C. 

      Temperature and pH have no effect on the action of this enzyme.

    • D. 

      This enzyme works best at a temperature near freezing and a pH above 4 .

  • 11. 
    What is the technique of genetic engineering in which DNA is transferred from the cells of one organism to the cels of another?
    • A. 

      Gene splicing

    • B. 

      Chromatography

    • C. 

      Electrophoresis

    • D. 

      Selective breeding

  • 12. 
    A portion of DNA has the following sequence: A-T-C-G-T-A. Which DNA strand could corectly pair with the one given?
    • A. 

      G-C-A-T-C-G

    • B. 

      T-A-G-C-A-T

    • C. 

      A-T-G-C-T-A

    • D. 

      C-A-T-G-A-C

  • 13. 
    Compared to the number of chromosomes in a normal human body cell, the number of chromosomes in a normal sperm cell is
    • A. 

      The same

    • B. 

      Twice as great

    • C. 

      Half as great

    • D. 

      Four times as great

  • 14. 
    Children born to the same parents are usually very different from each other. These differences result primarily from the process of
    • A. 

      Mitotic division

    • B. 

      Meiosis

    • C. 

      Asexual reproduction

    • D. 

      Cloning

  • 15. 
    Human growth and sexual development are controlled by
    • A. 

      Nerves

    • B. 

      Hormones

    • C. 

      The digestive system

    • D. 

      The excretory system

  • 16. 
    Which is arranged in the correct sequence?
    • A. 

      Fertilization -> embryo development -> meiosis -> birth

    • B. 

      Embryo development -> meiosis -> fertilization -> birth

    • C. 

      Meiosis -> fertilization -> embryo development -> birth

    • D. 

      Fertilization -> meiosis -> embryo development -> birth

  • 17. 
    The technique illustrated in the diagram is known as 
    • A. 

      Genetic engineering

    • B. 

      Protein synthesis

    • C. 

      Internal fertilization

    • D. 

      External fertilization

  • 18. 
    During which part of this cycle does the breakdown of the thickened uterine lining occur?
    • A. 

      Ovulation

    • B. 

      Corpus luteum stage

    • C. 

      Menstruation

    • D. 

      Follicle stage

  • 19. 
    On or about which day is the egg released from the ovary?
    • A. 

      Day 8

    • B. 

      Day 14

    • C. 

      Day 20

    • D. 

      Day 28

  • 20. 
    The hormone FSH stimulates the development of a follicle in the ovary of a human female. As the follicle develops, it secretes estrogen. A high level of estrogen decreases the secretion of FSH. This mechanism is an example of
    • A. 

      Gamete development

    • B. 

      Cell differentiation

    • C. 

      Positive feedback

    • D. 

      Negative feedback

  • 21. 
    Which hormones are secreted by the ovaries?
    • A. 

      Progesterone and estrogen

    • B. 

      FSH and progesterone

    • C. 

      FSH and LH

    • D. 

      LH and estrogen

  • 22. 
    What is the average length of this reproductive cycle?
    • A. 

      32 days

    • B. 

      28 days

    • C. 

      14 days

    • D. 

      4 days

  • 23. 
    Which mutation could be passed onto future generations?
    • A. 

      A gene in the liver cell

    • B. 

      Cancer caused by excessive exposure to the sun

    • C. 

      A chromosomal alteration during gamete formation

    • D. 

      A random breakage of a chromosome in a leaf cell of a maple tree

  • 24. 
    The DNA sequences found in two different species are 95% the same. This suggests that these species
    • A. 

      Are evolving into the same species

    • B. 

      Contain identical proteins

    • C. 

      May have similar evolutionary histories

    • D. 

      Have the same number of mutations

  • 25. 
    DDT is an insecticide that accumulates in the fatty tissues of animals and is transferred through food chains. Its concentration increases at each link of a food chain. Which organism in a food chain is more likely to accumulate the highest concentration of DDT?
    • A. 

      Rabbit (herbivore)

    • B. 

      Corn (a producer)

    • C. 

      Field mouse (a consumer)

    • D. 

      Owl (a predator)