The spindle apparatus is composed of ____________________.
A. Golgi bodies
B. microtubules
C. endoplasmic reticulum
D. nucleoprotein
E. chromatids
Answer: B
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What can be said about sex-determination in humans?
a. All human sperm carry a Y chromosome. b. 25% of human zygotes are XY. c. All zygotes carry a Y chromosome. d. Sex depends upon which type of sperm fertilizes the egg. e. All human eggs carry a Y chromosome.
What is the knot of capillaries in the nephron where blood is filtered?
A) Renal cortex B) Collecting duct C) Glomerulus D) Glomerular capsule
Which body system will return excess tissue fluid to the cardiovascular system?
A. lymphatic B. muscular C. urinary D. digestive E. neural
How are Gram-positive and Gram-negative flagella different?
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