Life Science Enrichment Quiz

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Quizzes Created: 1 | Total Attempts: 148
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  • 1/30 Questions

    Which three human-body systems coordinate to cause an arm to move?  

    • Nervous, muscular, skeletal
    • Respiratory, muscular, digestive
    • Skeletal, circulatory, immune
    • Digestive, nervous, circulatory
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About This Quiz


There are 5 questions each on the following themes:
Cell Biology, Genetics, Evolution, Ecology, Physiology, and The Scientific Method
Study the power-point and watch the relevant videos that your teacher gave you to prepare. Then do the best you can on this quiz.
You will need to print out the final score sheet and give it to your teacher when you are done. 70% or better is considered passing.

Life Science Enrichment Quiz - Quiz

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  • 2. 

    In this human gamete which structure stores most of the genetic information? 

    • Mitochondrion

    • Lysosome

    • Nucleus

    • Tail

    Correct Answer
    A. Nucleus
    Explanation
    In this type of eukaryotic cell, the genetic information is inside the nucleus as DNA

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  • 3. 

    Which of the following produces identical nuclei in cells?

    • Pollination

    • Mitosis

    • Osmosis

    • Fertilization

    Correct Answer
    A. Mitosis
    Explanation
    Mitosis is where a cell makes identical copies of its nucleus before dividing through cytokinesis.

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  • 4. 

    Which of the following cell types is formed by meiosis?

    • Muscle cells

    • Sperm cells

    • Skin cells

    • Blood cells

    Correct Answer
    A. Sperm cells
    Explanation
    Meiosis makes sex cells that are genetically unique.

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  • 5. 

    Which of the following pairs provides structural support for a human? 

    • Skin and blood

    • Bones and muscles

    • Spine and heart

    • Brain and nerves

    Correct Answer
    A. Bones and muscles
    Explanation
    The skeletal structure and muscles provide the structural support for a person.

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  • 6. 

    During photosynthesis in plants, what is the source of the carbon in the sugar molecule (C6H12O6)?

    • Carbon dioxide in the air

    • Carbon monoxide in the air

    • Carbon particles in the soil

    • Carbon particles in water

    Correct Answer
    A. Carbon dioxide in the air
    Explanation
    Photosynthesis is where plants take carbon dioxide form the air and water from the soil and make sugar and oxygen with the help of the sun's energy.

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  • 7. 

    Which of the following levels of organization best represents the sequence from smallest unit to largest? 

    • Cell, organism, organ, tissue

    • Cell, tissue, organ, organ system

    • Cell, organism, tissue, organ system

    • Cell, tissue, organism, organ

    Correct Answer
    A. Cell, tissue, organ, organ system
    Explanation
    The correct answer is cell, tissue, organ, organ system. This sequence represents the hierarchical organization of living things, starting with the basic unit of life (cell), followed by the grouping of cells with similar functions (tissue), then the combination of different tissues to form a structure with a specific function (organ), and finally the coordination of multiple organs to perform a larger function (organ system).

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  • 8. 

    As a person exercises, carbon dioxide (CO2 ) levels in the blood increase. This causes the nervous system to signal which of these systems to respond? 

    • Digestive and immune

    • Immune and respiratory

    • Respiratory and circulatory

    • Circulatory and endocrine

    Correct Answer
    A. Respiratory and circulatory
    Explanation
    The body needs to get the CO2 out and get more O2 in. Speeding the heart-rate and increasing breathing help to keep you alive.

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  • 9. 

    Which of the following sets of organisms would be found in a wetland ecosystem?

    • Tortoise, lizard, fly

    • Salamander, mosquito, frog

    • Moose, seal, lemming

    • Lion, giraffe, beetle

    Correct Answer
    A. Salamander, mosquito, frog
    Explanation
    This is the only group that would actually be found in a wetland.

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  • 10. 

    An experiment is performed to determine whether increasing the amount of water given to plants affects the rate of plant growth.  The scientist takes 5 of the same plant and waters each at a different rate each day.  At the end of each day the scientist measures the overall growth of each plant.   In this example, which is the "dependent variable"?

    • The scientist

    • The amount of water

    • The rate of growth

    • The hypothesis

    Correct Answer
    A. The rate of growth
    Explanation
    The dependent variable is the thing that is measured as a result of what the scientist does. In this example, the scientist directly changes the amount of water in order to observe the changes in the rate of growth for each plant.

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  • 11. 

    How is natural selection in the evolution of long necks in giraffes best explained?  

    • Shorter-necked giraffes were killed by long-necked giraffes.

    • Giraffe necks grew longer because of the bone structure of the animals.

    • Giraffes with longer necks survived because they were better suited to the environment.

    • Long-necked giraffes mated only with other long-necked giraffes.

    Correct Answer
    A. Giraffes with longer necks survived because they were better suited to the environment.
    Explanation
    Survival of the fittest -- long necks mean better access to food and better chances of winning a mate.

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  • 12. 

    Which of the following processes allows the cells of an organism to use carbon from the environment?

    • Mitosis

    • Fertilization

    • Transpiration

    • Photosynthesis

    Correct Answer
    A. Photosynthesis
    Explanation
    Photosynthesis is where plants use sunlight to convert carbon dioxide and water into sugar and oxygen.

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  • 13. 

    Skeletal structures are common between two animals of different species. These structures probably exist because both species

    • Have a common food source.

    • Live in the same environment

    • Have survived until the present time

    • Are related to a common ancestor.

    Correct Answer
    A. Are related to a common ancestor.
    Explanation
    Common ancestry means that both animals looks similar because they evolved over time from the same animal species.

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  • 14. 

    The jackrabbit population sometimes decreases dramatically. One possible explanation for this decrease is that the coyote population has increased. This explanation is a scientific   

    • Conclusion

    • Experiment

    • Hypothesis

    • Law

    Correct Answer
    A. Hypothesis
    Explanation
    A hypothesis is an educated guess that must be tested and proven true/false.

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  • 15. 

    An experiment is performed to determine whether increasing the amount of water given to plants affects the rate of plant growth.  The scientist takes 5 of the same plant and waters each at a different rate each day.  At the end of each day the scientist measures the overall growth of each plant.   In this example, which is the "independent variable"?

    • The scientist

    • The amount of water

    • The rate of growth

    • The hypothesis

    Correct Answer
    A. The amount of water
    Explanation
    The independent variable is the thing that the scientist himself/herself directly changes. In this example, the scientist directly changes the amount of water given to each plant.

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  • 16. 
    The loss of which trophic level would be most disastrous for the ecosystem? - ProProfs

    The loss of which trophic level would be most disastrous for the ecosystem?

    • Primary consumer

    • Secondary consumer

    • Apex consumer

    • Producer

    Correct Answer
    A. Producer
    Explanation
    If the producers all die out, then all of the other animals will run out of food as well.

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  • 17. 

    The diet of white-tailed deer consists primarily of shrubs. Sika are another species of deer that eat both grasses and shrubs. After an extended drought period, why might the sika population be favored over the white-tailed deer population?

    • Sika require less food than do the white-tailed deer.

    • Sika require more water than do the white-tailed deer.

    • Sika have more food sources than do the white-tailed deer.

    • Sika have fewer food sources than do the white-tailed deer.

    Correct Answer
    A. Sika have more food sources than do the white-tailed deer.
    Explanation
    Having food available is essential for survival of a species.

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  • 18. 

    Fungi are an important part of a terrestrial ecosystem because they

    • Store energy.

    • Bond oxygen to sulfur.

    • Function as producers.

    • Recycle organic matter.

    Correct Answer
    A. Recycle organic matter.
    Explanation
    Fungi are decomposers. They recycle organic matter back into the soil.

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  • 19. 

    The purpose for giving a person a vaccine is to 

    • Introduce chemicals that destroy viruses.

    • Stimulate an immune response.

    • Prevent inflammation.

    • Cure a disease.

    Correct Answer
    A. Stimulate an immune response.
    Explanation
    Vaccines teach the immune system to react by mimicking a natural infection.

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  • 20. 

    A mineral supplement designed to prevent the common cold was given to two groups of people during a scientific study.    After eight weeks, neither group reported a case of the common cold. Which of the following would have made the outcome of this study more valid?   

    • Test only one group with 150 mg of the supplement.

    • Give the supplement to both groups for only 6 weeks.

    • Create a third group that receives 75 mg of the supplement.

    • Create a third group that does not receive the supplement.

    Correct Answer
    A. Create a third group that does not receive the supplement.
    Explanation
    This is called the "control group" -- the group that goes unchanged to compared results with.

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  • 21. 
    Which layer most likely contains fossils of the most recently evolved organisms? - ProProfs

    Which layer most likely contains fossils of the most recently evolved organisms?

    • 6

    • 5

    • 2

    • 1

    Correct Answer
    A. 6
    Explanation
    The most recent organism will most likely be in the top layer. The deeper you dig, the older the fossil.

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  • 22. 

    Which of the following lacks a nucleus?

    • A plant cell

    • An animal cell

    • An amoeba

    • A virus

    Correct Answer
    A. A virus
    Explanation
    Plant cells, animal cells, and amoeba are all eukaryotic which means they have a nucleus. Not only does a virus lack a nucleus, but its not even a living cell at all.

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  • 23. 

    The genetic material of an organism is composed of

    • Lipids

    • Proteins

    • Deoxyribonucleic acids

    • Complex carbohydrates

    Correct Answer
    A. Deoxyribonucleic acids
    Explanation
    DNA is the genetic material for the organism and it is generally found inside the nucleus of the cell.

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  • 24. 

    The inheritance of a trait in humans is best described as being determined by

    • A single allele

    • One or more pairs of alleles

    • One pair of chromosomes

    • The sex chromosomes of the offspring

    Correct Answer
    A. One or more pairs of alleles
    Explanation
    Humans receive one allele from mom and one allele from dad. These pairs of alleles determines which traits will be inherited by the baby.

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  • 25. 

    Which of the following is a source of genetic variation within a species?

    • Cloning

    • Mutation

    • Selective breeding

    • Natural selection

    Correct Answer
    A. Mutation
    Explanation
    Genetic mutations lead to genetic changes which leads to possible evolution.

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  • 26. 

    the following shows a marine food chain: Phytoplankton --> Zooplankton --> Herring --> Salmon The zooplankton in this food chain are  

    • Primary producers

    • Primary consumers

    • Secondary consumers

    • Tertiary consumers

    Correct Answer
    A. Primary consumers
    Explanation
    Producers turn light energy into chemical energy, primary consumers eat producers.

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  • 27. 

    Which of the following organelles use carbon dioxide to produce sugars?

    • Vacuoles

    • Ribosomes

    • Chloroplasts

    • Mitochondria

    Correct Answer
    A. Chloroplasts
    Explanation
    Photosynthesis happens in the chloroplasts of cells. This is how plants use light to convert carbon dioxide and water into sugar and oxygen.

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  • 28. 

    Which of the following organelles releases energy from sugars?   

    • Ribosomes

    • Vacuoles

    • Chloroplasts

    • Mitochondria

    Correct Answer
    A. Mitochondria
    Explanation
    The mitochondria is the energy factory for the cell.

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  • 29. 

    In pigeons, the allele for normal feathers (F) is dominant to the allele for frizzy feathers (f).    If a purebred, normal-feathered bird (FF) is crossed with a frizzy-feathered bird (ff), how many different feather phenotypes are possible in the offspring?

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 1
    Explanation
    The only possible offspring genotype would be heterozygous (Ff) so the only possible phenotype would be normal feather.

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  • 30. 

    A prediction was made that the best conditions for earthworm growth occur when there are fewer than five earthworms per cubic meter of soil. This prediction is called a 

    • Law

    • Theory

    • Hypothesis

    • Conclusion

    Correct Answer
    A. Hypothesis
    Explanation
    A hypothesis is an educated prediction that must be tested and proved true/false.

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Quiz Review Timeline (Updated): Aug 13, 2024 +

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  • Current Version
  • Aug 13, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 27, 2014
    Quiz Created by
    Shousebiology
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