The process by which information in genes guides the production of RNA and proteins is called ____
a. translation
b. gene expression
c. synthesis
d. cellular respiration
e. transcription
b
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Biological evolution occurs in ____ when specific processes cause genomes of organisms to differ
from their ancestors
a. individuals b. populations c. communities d. phenotypes e. sub-species
In a muscle contraction event, ____ causes the release of calcium from the sarcoplasmic reticulum
a. the hydrolysis of ATP b. the formation of ATP c. the formation of the actin-myosin cross-bridge d. a signal from a motor neuron e. the shortening of the sarcomere
Testosterone functions inside a cell by _____
A) acting as a signal receptor that activates tyrosine kinases B) binding with a receptor protein that enters the nucleus and activates specific genes C) acting as a steroid signal receptor that activates ion channel proteins D) coordinating a phosphorylation cascade that increases spermatogenesis
The urinary bladder is protected from leaking by cell-to-cell junctions called
A) desmosomes. B) tight junctions. C) gap junctions. D) plasmodesmata.