Fever helps the body fight infection in which of the following ways?
a. Increased body temperature decreases phagocytosis.
b. Fever causes the creation of lysosomes.
c. Fever inhibits the growth of some microorganisms.
d. Fever reduces lymphocyte activity.
e. Fever increases capillary permeability.
c
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All of the following are true about plasmids EXCEPT:
a. Plasmids are small portions of circular DNA found in bacteria. b. Plasmids often encode for genes that carry toxins or antibiotic resistance. c. Plasmids can be transferred from one bacterium to another. d. Plasmids contain DNA and are found in the nucleoid region of bacteria
In the passive processes of simple diffusion and osmosis, substances and water move down their concentration gradients, moving from areas of higher concentrations to areas of lower concentrations.
a. true b. false
Which one of the following happens during repolarization of a neuron?
A) Sodium channels close, and potassium rushes out of the cell to temporarily reestablish the membrane potential. B) Potassium channels close, preventing further loss of positive ions. C) The sodium-potassium pump is turned off. D) Sodium channels open to allow sodium ions to rush back out of the cell. E) The membrane potential is eliminated.
What do malarial parasites, mosquitoes, and humans all have in common?
What will be an ideal response?