The pituitary detects a rising hormone concentration in blood and inhibits the gland secreting the hormone. This is a ________ feedback loop
Fill in the blank(s) with correct word
negative
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Which of the following statements best explains why dominant alleles that cause lethal disorders are less common than recessive alleles that cause lethal disorders?
A) Lethal disorders caused by dominant alleles are usually more severe than lethal disorders caused by recessive alleles. B) Unlike lethal disorders caused by recessive alleles, lethal disorders caused by dominant alleles usually cause the death of the embryo. C) Most individuals carrying a lethal dominant allele have the disorder and die before they reproduce, whereas individuals carrying a lethal recessive allele are more likely to be healthy and reproduce. D) The presence of a lethal dominant allele causes sterility.
In a resting neuron, which ion is leaking out of the cell?
a. potassium only b. sodium only c. chloride only d. calcium only e. both sodium and potassium
Imagine that a protein molecule is to be exported from a cell. Describe the pathway that the protein takes from the point of synthesis to export
What will be an ideal response?
What is operant conditioning?
What will be an ideal response?