The first photosynthetic autotrophs used the energy of the sun to split H2O because it is not very electronegative
______________ Indicate whether the statement is true or false.
False - H2S
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Many euryarchaeote and crenarchaeote archaeons are ________________, or organisms that thrive in high-temperature environments (some in temperatures as high as 122 °C)
A. hypothermophiles B. hyperthermophiles C. halophiles D. non-halophiles E. basophiles F. acidophiles
Alanine and lysine are both amino acids. Not eating enough lysine can lead to protein deficiency, whereas not eating enough alanine does not lead to protein deficiency. Why is this the case?
A. Alanine can be synthesized by cellular biochemical pathways, whereas lysine cannot. B. Alanine can be easily replaced by other amino acids in protein synthesis, whereas lysine cannot. C. Lysine is needed in much larger quantities for protein synthesis than alanine. D. The body has a more difficult time absorbing lysine than alanine, so more must be consumed to avoid protein deficiencies. E. All of the answer options are correct.
The infoldings of the inner mitochondrial membrane are called
a. cisternae. b. cristae. c. laminae. d. lacunae.
All of the following would be examples of entry via the parenteral route EXCEPT:
a. an injection b. a hair follicle?skin c. a bite wound d. surgery e. a skin cut