Inactivation of a fluorescent dye in a very concentrated spot on a cell so that the fluidity of membranes can be visualized is called
A) liposome formation.
B) SDS-PAGE.
C) photobleaching.
D) the freeze-fracture technique.
E) ferritin-conjugated lectins.
C) photobleaching.
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A chemical that is effective in preserving foods with a low pH such as bread is ________.
A. sodium propionate B. sodium nitrate C. sodium sulfite D. sodium citrate
Sexually dimorphic features do not include
A. antlers. B. colored plumage. C. additional tail feathers. D. intelligence. E. body size.
Answer the following statements true (T) or false (F)
1. The Calvin cycle produces ATP and NADPH. 2. When chlorophyll a absorbs light, electrons are "excited" and ejected from the chlorophyll a molecule. 3. For most lawn grasses to grow well in hot, dry weather, they must be watered so that their stomata will remain open for longer periods of time to let in O2. 4. C4 plants and CAM plants fix carbon twice during the photosynthetic reactions. 5. Aerobic respiration uses oxygen as its final electron acceptor at the end of the electron transport chain.
Which of the following is not a function of the liver in adults?
A) produces bile B) detoxifies alcohol C) stores glucose D) produces urea E) makes red blood cells