Why are skeletal muscles striated?
a. because of the repeating bands of troponin and tropomyosin
b. because of the repeating bands of actin and tropomyosin
c. because of the repeating bands of actin and myosin
d. because of the repeating bands of troponin and myosin
c. because of the repeating bands of actin and myosin
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Suppose there was a mutation in the segment polarity genes of Drosophila. What do you suppose might be the outcome?
A) Several segments of the embryo will be missing. B) Every other segment of the embryo will be missing. C) Legs will appear in the place of antennae. D) Antennae will appear in a different part of their usual segment.
Does the permeability of the membrane affect the time required to reach equilibrium?
a. Yes b. No
Science does not involve
a. research. b. value judgments. c. theories. d. hypothetical concepts. e. controls.
In a dialysis machine, wastes are removed from blood plasma by the process of
A) filtration. B) diffusion. C) reabsorption. D) absorption.