A decrease in the release of neurotransmitter from the photoreceptor would indicate a(n)
A) lack of light reaching the retina.
B) decrease in light intensity.
C) increase in light intensity.
D) change in focus of the lens onto a distant object.
C) increase in light intensity.
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Weak acids are able to act as chemical buffering systems for the body because they only partially dissociate
Indicate whether the statement is true or false
Under normal conditions, the movement of potassium into a cell always requires the splitting of ATP
Indicate whether the statement is true or false
The red pulp of the spleen functions to _____.
A) produce erythrocytes B) produce lymphocytes C) phagocytize senescent cells D) produce B-cells
Which of the following is the last step in the process of fertilization?
A. A sperm fuses with the egg's plasma membrane. B. The capacitated sperm release their acrosomal enzymes to penetrate through the cells surrounding the egg. C. The sperm nucleus enters the egg, and the egg immediately prevents any further sperm from gaining access by forming a fertilization membrane that a sperm cannot penetrate. D. The nuclei of the sperm and egg rupture within the fertilized egg and the chromosomes mix to form a single nucleus.