Which of the following prevent uncontrolled cell division?
a. Proto-oncogenes
b. Tumor suppressor genes
c. Gene mutations
d. Negative regulators
b. Tumor suppressor genes
Tumor suppressor genes prevent uncontrolled cell division.
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If a C3 plant that normally closes its stomata during hot, dry conditions were triggered to open them instead, the most likely outcome would be that
A. CO2 enters the leaf, decreasing the rate of photosynthesis. B. More chlorophyll is made, increasing the rate of photosynthesis. C. Glucose leaves the leaf, increasing the rate of photosynthesis. D. O2 enters the leaf, increasing the rate of photosynthesis. E. Water leaves the leaf, decreasing the rate of photosynthesis.
There is a genetic basis for differences in foraging behavior among fruit fly larvae. Some larvae crawl around a lot eating yeast that grows on decaying fruit. These larvae are called:
a. seekers b. sitters c. hunters d. rovers e. mobile eaters
All of the following are involved in the regulation of the rate and depth of breathing EXCEPT which one?
A) carotid and aortic bodies B) blood levels of CO2 C) blood levels of O2 D) bronchi, bronchioles, and alveoli E) medulla oblongata
The hypocotyl connects the radicle with the cotyledons. Indicate whether the statement is true or false