Where are most glucose transporter proteins ("GLUTs") located when levels of the hormone insulin are LOW?
A. inserted into the nuclear membrane
B. inserted into the plasma membrane
C. in the membranes of intracellular vesicles
D. in the endoplasmic reticulum
E. in the liver-they are transported to other cells when glucose levels rise.
Answer: C
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Refer to the figure above. Which of the structures in the figure causes the two strands of DNA to separate?
A) A B) B C) C D) D
A solution is a uniform mixture in which a ____ is dissolved completely in a ____
a. salt; solute b. solute; salt c. solute; solvent d. solvent; salt e. solvent; solute
Regulation of protein concentration can occur by ________________.
a. alteration of the transcription of the gene coding for that protein b. removal of the RNA coding for that protein c. allosteric modulation of that protein's activity d. A and B are correct e. A, B, and C are correct
Tightly packed collagen fibers arranged in either parallel rows or an irregular meshwork are characteristic of ________ connective tissue
Fill in the blank(s) with correct word