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Cellular Biology – Test 2


1. When carbon dioxide enters a plant cell, it must first interact with the:

    A. cell membrane
    B. cytoplasm
    C. cell wall
    D. chloroplast


2. How many pairs of chromosomes does a human being have?

    A. 23
    B. 26
    C. 46
    D. 32


3. In normal sexual reproduction, two mature germ cells fuse to form what?

    A. gonad
    B. ovule
    C. embryo
    D. zygote


4. How many times larger are animals cells than plant or bacterial cells?

    A. 10 times as large
    B. 100 times as large
    C. 1000 times as large
    D. 10,000 times as large


5. Energy used by cells is temporarily stored in:

    A. ATP molecules
    B. the cytoskeleton
    C. ribosomes
    D. lysosomes


6. Sterile female honey bees are called:

    A. drones
    B. queen
    C. guards
    D. workers


7. If two alleles at a locus are identical, the individual organism is

    A. heterozygous
    B. homozygous
    C. an identical twin
    D. dominant


8. Which animal does not possess an exoskeleton?

    A. mollusk
    B. bird
    C. turtle
    D. snake


9. What is the probability that parents will have two children of the same sex?

    A. 1/2
    B. 1/3
    C. 1/4
    D. 1/16


10. One celled animals are of which phyla?

    A. Metazoa
    B. Porifera
    C. Protozoa
    D. Mollusca












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