Identify two changes that occur at or shortly after birth that allow the neonate to live independently. What will be an ideal response?
The neonate begins to breathe within a few seconds of birth as a result of carbon dioxide
accumulating in the blood after the umbilical cord is cut. The lungs expand, and there is
increased blood flow from the right ventricle to the pulmonary vessels. The foramen ovale
closes.
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Vasopressin is a hormone that is primarily released when the body is low on water. Release of vasopressin causes the kidneys to conserve water by concentrating urine and decreasing urine output. However, vasopressin also has additional functions in other tissues such as the brain and blood vessels, which are not directly involved in urine production. How could it be possible for vasopressin to
trigger different responses in different tissues? A. Vasopressin can bind to, and act on, different receptor subtypes, leading to different cellular responses in different tissues. B. Vasopressin can be released at different times to result in different effects. C. Vasopressin binds to the same exact receptor in different tissues, but causes a different conformational change to the receptor in each tissue. D. The kidneys have a receptor for vasopressin, but cells in the brain and blood vessels do not have a receptor for vasopressin.
Both glycolysis and the citric acid cycle can be regulated by feedback inhibition. Provide two
examples of feedback inhibition.
What will be an ideal response?Duplication of individual chromosomes instead of whole genomes can occur by ________.
Fill in the blank(s) with the appropriate word(s).
The nucleus is surrounded by a membrane referred to as a ________
Fill in the blank(s) with the appropriate word(s)