Insulin is a protein made in the endoplasmic reticulum of cells of the pancreas. These cells secrete insulin into the blood where it controls the uptake of sugar by most of the body's cells. How does insulin move from inside to outside the cell?
What will be an ideal response?
by being carried in vesicles that move insulin from the endoplasmic reticulum to the Gogli apparatus then to the plasma membrane
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The exoskeleton of insects is composed mainly of what material?
A. chitin B. calcium carbonate C. hydroxyapatite D. collagen E. waxes
One example of a simple reflex arc involves the
a. contraction of a muscle when it is stretched. b. conscious message to move part of the body. c. receptor, the brain, and the effector. d. muscle action in a salute when a noncommissioned combatant sees an officer. e. contraction of an antagonistic muscle when its opposite muscle relaxes.
During elongation, the charged tRNA is recruited to which location on the ribosome?
What will be an ideal response?
A replication fork is:
a. observed only in prokaryotic chromosomes. b. observed only in nondividing cells.. c. a Y-shaped structure where parental DNA strands are separated by helicase. d. a site where one DNA strand serves as a template, but the other strand is not replicated. e. created by the action of the enzyme RNA polymerase