Which of the following nerves has a motor component?
A. Olfactory Nerve
B. Ophthalmic Nerve
C. Optic Nerve
D. Maxillary Nerve
E. Mandibular Nerve
Ans: E. Mandibular Nerve
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If nitrifying bacteria were not present in a soil, plants would ____
a. take up nitrogen for their use mainly as NH4+ b. not survive because they could not get useful nitrogen c. take up nitrogen for their use mainly as N2 d. take up nitrogen for their use mainly as NH3 e. take up nitrogen for their use mainly as NO3-
Your dog has flu caused by an H3N8 strain. Assume that you breathe in this strain, after you have already come in contact with an H1N1 strain. Both viruses go into the cells of your upper respiratory tract. During the viral replication cycle inside of your epithelial cells, genetic information for hemagglutinin antigen and for neuraminidase antigen are recombined. Your cells end up producing a new variant---H3N1. Predict what might happen as a result of this set of events.
A. This is not a problem because the human immune system can respond quickly to any new antigens never seen before. B. Since this new virus has antigens from a dog strain, the new strain will not be able to infect human cells. C. This novel virus will spread through the human population without much resistance. D. Only people who have never had flu before will get sick from the new H3N1 variant.
__________ is mostly water in which diverse ions and molecules are dissolved. Fill in the blank(s) with the appropriate word(s)
Transpiration is most closely associated with:a
the atmosphere. b. terrestrial plants. c. the ocean.
d. groundwater. e. bacteria.