Which of the following statements about red blood cells is true?
A) The main function of red blood cells is to carry nutrients.
B) Red blood cells are shaped like biconcave disks.
C) Each red blood cell contains about 1 million molecules of hemoglobin.
D) Red blood cells in adult humans have nuclei.
Answer: B
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The middle ear consists of the cochlea and vestibular apparatus.
a. true b. false
Which of the following is false regarding nondisjunction?
A. Nondisjunction results in sex cells having too few or too many chromosomes. B. The frequency of nondisjunction increases in women over the age of 37. C. Nondisjunction is a cause of Down syndrome. D. A cell with one too few chromosomes is trisomic.
The two copies of a replicated chromosome are called sister_______.
Fill in the blank(s) with the appropriate word(s).
growth as certain organelles double
What will be an ideal response?