Action potentials traveling down the plasma membrane of a muscle fiber will next reach the _____ after leaving the T tubules.
A. mitochondria
B. neuromuscular junction
C. cytoskeletal system
D. sarcoplasmic reticulum
E. endomembrane system
Answer: D
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If red (RR) is crossed with white (rr) and produces a
pink flower (Rr), and tall (D) is dominant to dwarf (d), the F2 phenotypic ratio from a cross of RR dd with rr DD would be a. 9:3:3:1. b. 1:1:1:1. c. 1:2:2:4:1:2:1:2:1. d. 3:6:3:1:2:1. e. none of these.
In a case of positive feedback, an increase in the stimulus causes ______ in the response and does not result in homeostasis.
A. a slight decrease B. an increase C. no change D. a large decrease
Select the best response to the question. ? ?You are caring for a patient who has recently returned home from a trip to Central America and is complaining of stomach cramps and diarrhea. What treatment do you anticipate will be prescribed for the patient?
A) intravenous fluids B) anti-viral agents C) antifungal medications D) antibiotics
How are lipids different from other categories of biological molecules?
A. They are not organic. B. They will not combine with water. C. They do not have carbon. D. They are much more complex. E. They are not seen in all living things.