During cellular respiration, what molecule collects the majority of the electrons from the food that we eat?
A) CO2 B) glucose C) ATP D) NAD+ E) FAD+
Answer: D
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Placing a blood cell into a glass of pure water causes the cell to burst. Why does this happen?
a. There is a net movement of water, via osmosis, into the cell. b. All the water moves via osmosis out of the cell. c. Net transport of water via active transport occurs. d. Organelles cannot survive and function in pure water.
Carbon dioxide is transported in the blood in all of the following ways EXCEPT
a. disolved in plasma b. combined with hemoglobin c. as bicarbonate ions d. by white blood cells
A urine sample collected directly from the urinary bladder
A) is sterile. B) contains fewer than 100 pathogens/ml. C) contains fewer than 10,000 pathogens/ml. D) contains more than 100,000 pathogens/ml. E) has leukocyte esterase.
The scientific method starts with a(n)
A) hypothesis. B) proposal. C) question. D) observation. E) prediction.