If all other factors are held constant, what effect would "choking up" on a bat have on the resultant linear velocity of a hit ball?
A. increase
B. decrease
C. remain the same
D. need more information
B. decrease
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A man has been told that he is not synthesizing enough follicle-stimulating hormone (FSH), and for this reason he may be unable to father a child. Choose the correct statement to explain this problem.
A) FSH stimulates estrogen secretion by ovarian cells; therefore it is not synthesized by males. B) The physician is wrong?a hormone made in the adenohypophysis could not influence fertility. C) FSH stimulates sperm production in the testes. D) The man must be producing progesterone, which inhibits the synthesis of FSH.
The blind spot
a. is the point on the retina at which the optic nerve leaves and blood vessels pass through b. contains special photoreceptors that make only melanospin, which is not used for vision c. is in the exact center of the retina d. exhibits all of the above e. exhibits only a and c
Which of the following best explains diffusion?
A) movement of molecules from an area of high concentration to an area of low concentration B) movement of molecules from where there are fewer of them to where there are more C) movement of molecules farther away from equilibrium D) exchange of nonpolar molecules for polar molecules
Materials are packaged in vesicles for transport by the ________.
A. mitochondria B. endoplasmic reticulum C. lysosomes D. Golgi complex