How many pairs of chromosomes do human cells have?
A) 13
B) 20
C) 23
D) 46
C
Explanation:
A) Human cells have more than 13 pairs of chromosomes.
B) Human cells have more than 20 pairs of chromosomes.
D) Human cells have fewer than 46 pairs of chromosomes.
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A) ganglia B) nerves C) tracts D) nuclei
The three types of cones that respond to different wavelengths are designated __________.
Fill in the blank(s) with the appropriate word(s).Fill in the blank(s) with the appropriate word(s).
A patient goes to her doctor, complaining of fatigue, weight gain, and intolerance to cold. She also has a noticeable goiter in her neck. Which of the following is a most likely diagnosis and cause?
A. She has hyperthyroidism, possibly due to a hypersecreting tumor of the anterior pituitary gland. B. She has hypothyroidism, possibly due to low iodine in her diet. C. She has hypothyroidism, possibly due to destruction of thyrotrope cells of her anterior pituitary gland. D. She has hyperthyroidism, possibly due to Graves' disease.
Usable energy in the ATP molecule is stored in the:
a. adenosine portion of the molecule b. bond attaching the adenosine to the first phosphate group c. bond between the second and third phosphate groups d. both B and C above