Which stage of cellular respiration requires oxygen that you breathe?
A. Glycolysis
B. Electron transport chain
C. Citric acid cycle
D. Both the citric acid cycle and the electron transport chain require oxyen
Answer: D
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An individual tree can maintain a symbiotic relationship with many different species of mycorrhizae simultaneously
Indicate whether the statement is true or false.
Reciprocal inhibition is responsible for (select all correct choices):
A. the knee-jerk reflex. B. the Mauthner cell circuit of fish. C. voluntary motor behavior controlled by the brain.
Which of the following statements is false regarding the nicotinic acetylcholine receptor?
A) The actions of acetylcholine can be mimicked by nicotine. B) It binds one molecule of acetylcholine for activity. C) The open channel allows an influx of sodium ions. D) Biochemical purification was aided by cobratoxin. E) It is comprised of four large subunits.
The selective permeability of a cell membrane is due to ____
a. the hydrophobic core formed by the phospholipid tails b. the hydrophilic end facing the cell exterior c. glycolipids on the surface of the membrane d. the position of cholesterol in the membrane bilayer e. the hydrophilic core formed by the phospholipid tails