Which organelle increases in size, causing plant cells to elongate?
a. chloroplast
b. mitochondrion
c. nucleus
d. ribosome
e. vacuole
E
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In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed
along an electron transport chain to ___________.
a. NAD+ b. NADH c. photosystem I d. oxygen e. water
Four of the five glands listed below belong to the
endocrine system. Select the exception. a. thymus b. salivary c. parathyroid d. thyroid e. pituitary
Which of the following is most likely to be the source of most of the oxygen in the atmosphere?
A) weathering of rocks B) UV radiation C) photosynthesis D) macroevolution
Below is the result of a study conducted by Hughes et al. What was the primary purpose of this study?
a. to examine how many times eusociality evolved independently in the hymenoptera b. to study the evolution of polyandry in the hymenoptera c. to test whether eusociality can be maintained in polyandric species d. to infer whether monandry was the ancestral state in separate origins of eusociality