| 1. |
Which of the following statements about living cells is
false?
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a)
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Most are microscopic |
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b) |
They are found in all animals but not in all plants.
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c) |
They are the smallest basic units that can carry out all of the functions that we
normally define as life. |
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| 2. |
Chromosomes are found in _____________________ of cells.
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a)
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the nucleus |
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b)
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the cytoplasm |
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c)
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both the nucleus and the cytoplasm |
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| 3. |
Which of the following statements is true about the chromosomes of
different plant and animal species? |
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a)
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They may differ in number, but are the same shape and size.
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b)
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They may differ in the shape and size, but normally have the same number.
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c)
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They may differ in number, shape, and size.
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| 4. |
Which of the following statements is true about cells?
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a)
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The nucleus is within the cell membrane which is surrounded by the nuclear membrane.
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b)
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The nucleus is within the nuclear membrane which is surrounded by the cytoplasm.
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c)
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The cytoplasm is within the nuclear membrane.
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| 5. |
A karyotype is a:
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a)
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general term for any type of chromosome |
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b)
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type of abnormal chromosome that is associated with Down's syndrome
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c)
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picture of an individual's chromosomes arranged in a standardized way
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| 6. |
The sex chromosomes of normal females are:
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a)
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X and Y |
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b)
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Y and Y |
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c)
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X and X |
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d)
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none of the above |
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| 7. |
The genes on the sex chromosomes of females are ___________ and those of males
are mostly ___________ . |
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a)
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homologous; homologous |
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b)
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homologous; hemizygous |
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c)
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hemizygous; hemizygous |
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| 8. |
Autosomes: |
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a)
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are all chromosomes other than the sex chromosomes
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b)
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are normal sex chromosomes |
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c)
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automatically determine the sex of children
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| 9. |
Normal humans have __________ pairs of autosomes and ___________
pair(s) of sex chromosomes. |
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a)
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23 and 23 |
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b)
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23 and 2 |
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c)
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46 and 1 |
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d)
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22 and 1 |
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| 10. |
All of the chromosomes in each normal human cell collectively have
approximately __________ genes. |
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a)
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10,000-15,000 |
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b)
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20,000-25,000 |
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c)
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242,000 |
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d)
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1,000,000 |
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| 11. |
A chromatid is: |
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a)
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one of the strands or arms of a chromosome |
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b)
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the point of attachment of two strands of a chromosome
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c)
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a chromosome before it becomes visible during cell division
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| 12. |
The development of masculine physical characteristics is most
affected by the inheritance of: |
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a)
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an X chromosome |
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b)
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a karyotype |
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c)
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the SRY gene |
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