Which of the following is the normal genotype of a female?

A. 2 X chromosomes and 44 autosomes
B. 1 X chromosome, 1 Y chromosome, and 44 autosomes
C. 2 X chromosomes and 21 autosomes
D. 4 X chromosmes and 42 autosomes


Answer: A

Anatomy & Physiology

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The property that allows the heart to initiate each heartbeat itself is called ________.

Fill in the blank(s) with the appropriate word(s).

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Microtubules are strings of tubulin proteins that are formed from a

A) Dimer of ?-tubulin. B) Single string of ?-tubulin. C) Dimer of one ?-tubulin and one ?-tubulin. D) Hexamer of ?-tubulins and ?-tubulins twisted together.

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In your own words, define:

What will be an ideal response?

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Hexokinase is an enzyme involved in cellular respiration and its substrate is glucose.  Considering this information, hexokinase must be located

A. in the cytosol of cells. B. inside the mitochondria of cells. C. in the lumen of the small intestine. D. in the lumen of the stomach.

Anatomy & Physiology