Which of the following prevents muscle contraction by regulating the interaction between the
myofilaments?
a. the troponin-tropomyosin complex
b. actin
c. actomyosin
d. phosphate
e. myosin
A
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How does evolutionary change occur?
A. Through the modification of characteristics in a preexisting population. B. It may involve vertical descent with mutation. C. It may involve horizontal gene transfer. D. All of these choices are correct. E. None of these choices are correct.
Predators of Daphnia emit chemicals into the water that cause Daphnia to ________
a. develop pointed heads b. spend more time in hiding c. produce toxins d. reproduce at an earlier stage of development
What does phylogenetic evidence tell us about protostomes?
A. There was one transition from land to water. B. There were multiple transitions from land to water. C. There was one transition from water to land. D. There were multiple transitions from water to land.
A presumptive test for seminal fluid that is not dependent on the presence of sperm checks for the presence of ___, a protein produced in the prostate.
What will be an ideal response?