Radiation treatments to decrease bone pain are.
A) palliative.
B) prophylactic.
C) curative.
D) proliferative.
Ans: A) palliative.
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If pregnancy does not occur, what hormome will decrease in concentration?
A. chorionic gonadotropin B. progesterone C. FSH D. LH
What is the proton-motive force?
a. the force needed to move protons into the inner mitochondrial space b. the amount of energy required to protonate a glucose molecule c. the free energy associated with the removal of hydrogen from NADH d. the combination of a proton and voltage gradient across the membrane e. the synthesis of ATP from a proton gradient
If you add a compound to illuminated chloroplasts that inhibits the NADP+ reductase, NADPH generation ceases, as expected
However, ferredoxin does not accumulate in the reduced form because it is able to donate its electrons not only to NADP+ (via NADP+ reductase) but also back to the cytochrome b6-f complex. Thus, in the presence of the compound, a "cyclic" form of photosynthesis occurs in which electrons flow in a circle from ferredoxin, to the cytochrome b6-f complex, to plastocyanin, to photosystem I, to ferredoxin. What will happen if you now also inhibit photosystem II? (a) Less ATP will be generated per photon absorbed. (b) ATP synthesis will cease. (c) Plastoquinone will accumulate in the oxidized form. (d) Plastocyanin will accumulate in the oxidized form.
According to the out-of-Africa hypothesis, when did Homo sapiens migrate to Europe and Asia?
A. 10,000 years before present B. 5 million years before present C. 1000 years before present D. 100,000 years before present E. 1 million years before present