Of what use is the proton gradient created during aerobic respiration
Ans: stored form of energy, to synthesize ATP
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The Janzen-Connell hypothesis:
A. proposes that interactions with hostspecific pathogens, herbivores or seed predators play a role in decreasing plant diversity. B. was based on the observation that seeds often suffer lower rates of herbivory when growing directly beneath a parent tree. C. was supported by research that demonstrated that seeds that disperse far from their parent tree will escape from seed predators. D. was supported by data that indicated that seed and seedling mortality was not density dependent, thus favoring more common species. E. indicates that rare plants do not survive well in the tropics.
When processing a culture swab in the diagnostic laboratory the microbiologist should:
a. inoculate the media prior to making the direct smear. b. roll the swab back and forth on the slide making sure to transfer organisms. c. prepare the smear by rubbing the slide with one side of the swab and utilize the opposite slide to inoculate media. d. cancel the direct Gram stain and only set up the media. Request a second swab for the direct smear.
C4 photosynthesis is an adaptation to hot, dry conditions in which:
A. oxygen is stored in the root B. light energy is stored in chloroplasts C. CO2 is fixed and stored in the leaf D. water is stored in the stem
Which of the following statements regarding antibody function is FALSE?
A) They can prevent virus attachment to host cells. B) They can facilitate phagocyte attack on bacteria with a capsule (glycocalyx). C) They can penetrate host cells to bind intracellular antigens. D) They can facilitate cytotoxic attack by natural killer lymphocytes. E) They can bind more than one pathogen at a time, forming complexes.