_______ receptors mediate the effects of neurotrophic factors.
a. Calcium/calmodulin kinase
b. Tyrosine kinase
c. Protein kinase A
d. Protein kinase C
Answer is b. Tyrosine kinase
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Dynein motor proteins use ATP energy to:
A. carry vesicles along a microtubule within a cell in a minus-to-plus direction. B. carry vesicles along a microfilament within a cell in a minus-to-plus direction. C. carry vesicles along a microtubule within a cell in a plus-to-minus direction. D. carry vesicles along a microfilament within a cell in a plus-to-minus direction. E. slide along microfilaments to contract muscle cells.
Which of the following is an advantage of DNA typing?
A. It can be used to differentiate identical twins. B. Only small amounts of DNA are needed. C. It is cheaper than fingerprinting. D. It is error free compared to any other method. E. None of the answer options is correct.
Which chemical builds up in Tay-Sachs disease?
a. albumin b. glycogen c. amyloid d. fibrillin e. sphingolipids
What are the ecological consequences of acidification of rain and oceans?
A) They damage the health of ecosystems. B) They do not have any consequences on ecosystems. C) They improve the health of ecosystems. D) Acid rain damages ecosystems, but ocean acidification improves the health of oceans.