Which of these structures is part of a muscle cell's plasma membrane that delivers signals to the sarcomere?
A) myosin head
B) actin fiber
C) endoplasmic reticulum
D) T tubule
D
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The rate at which population size grows or declines depends on the rate of _____
a. births d. emigration b. deaths e. births and deaths c. immigration f. all of these
What area of water serves as nursery grounds for many species of marine fishes and invertebrates?
A. Photic zones B. Benthic zones C. Estuaries D. Pelagic zones E. Limnetic areas
All of the following pertain to erhlichiosis except
A. it is transmitted by Amblyomma and Ixodes ticks. B. it causes infection of monocytes. C. it causes infection of granulocytes. D. has symptoms that include fever, headache, and muscle pains. E. the disease is showing a decreased incidence.
Which of the following items that are commonly added during food preparation can be considered a preservative?
A) apple juice B) meat broth C) garlic D) yeast E) whey