A disruption of the stomach's protective mucus layer might give rise to ____
a. acid reflux
b. ulcers
c. peristalsis
d. heart burn
e. choking
ANSWER: b
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What observation by Thomas Hunt Morgan led to the understanding that genes were on chromosomes?
A. The white-eyed trait was recessive and disappeared in the F1 generation. B. In a cross of a red-eyed female and a white-eyed male, only females in the F2 generation were white-eyed. C. The inheritance of the white-eyed trait in fruit flies followed the same pattern of inheritance as that of the X chromosome. D. The inheritance of the white-eyed trait in fruit flies followed the same pattern of inheritance as that of the Y chromosome. E. Inheritance of the white-eyed trait was the same for female and male flies.
Due to the formation of an inversion loop, sections of DNA may either be duplicated or deleted depending on the size of the inversion
Indicate whether the statement is true or false
One hypothesis for why we age, or at least why our cells age, is that every time that mitosis occurs, ________ at the ends of chromosomes shorten, and eventually the cell runs out of these units at the ends of chromosomes
Fill in the blank(s) with correct word
It is a simple matter (i.e., thermodynamically favorable) for a vesicle to form from the endoplasmic reticulum.
a. true b. false