During the urination reflex, voluntary control is directed at the ____
a. bladder
b. external urethral sphincter
c. internal urethral sphincter
d. internal ureter sphincter
e. renal cortex
ANSWER: b
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A type of isolating mechanism that leads to reproductive isolation after a hybrid zygote has formed is called a _____________ isolating mechanism.
A. hybridization B. postzygotic C. prezygotic D. adaptive E. differential
Xanthophyll pigments __________
A. prevent formation of reactive oxygen species B. absorb light energy C. convert light energy into heat D. reflect yellow light E. All answer options are correct.
Explain why enzyme replacement therapy cannot cure a genetic disease, and why gene therapy offers the only cure
What will be an ideal response?
Phagocytosis of an infective bacterium by a white blood cell is a subset type of
A. exocytosis. B. facilitated diffusion. C. simple diffusion. D. active transport. E. endocytosis.