A hole in the inner mitochondrial membrane means that there is a(n) __________ in the
concentration gradient of H+ ions.
a. increase
b. decrease
B
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Why are viruses not considered to be living organisms?
What will be an ideal response?
A keystone species
a. has a disproportionately large effect on a community relative to its abundance b. controls the prey species. c. may increase or decrease the number of prey species in a community. d. has a disproportionately large effect on a community relative to its abundance, and may increase or decrease the number of prey species in a community. e. has a disproportionately large effect on a community relative to its abundance, controls the prey species, and may increase or decrease the number of prey species in a community.
The body’s biological clock is associated with the activity of which hormone?
a. melatonin b. ANP c. ADH d. FSH e. prolactin
At the beginning of prophase I, a total of ________ molecules of DNA are contained in a developing human sperm cell
A) twice as many (as compared to mature sperm) B) half as many (as compared to somatic cells) C) 92 D) 23 E) 46