Glycolysis breaks down glucose into what?
A) citric acid
B) NAD•H
C) glutaraldehyde
D) pyruvate
E) phosphate
Answer: D
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The synaptic knob releases acetylcholine into the synaptic cleft, which is received by receptors on the motor end plate. Which structure does this describe?
A) The neuromuscular junction of a skeletal muscle B) The varicosity of a smooth muscle cell C) A motor unit D) A sarcomere E) The thick filament
The lymphatic system is involved in circulation, immunity, and nutrient absorption.
Answer the following statement true (T) or false (F)
Which of the following could explain a gradual decrease in erythropoietin (EPO) levels?
A. A patient with acute kidney disease B. A patient in recovery from surgery with substantial blood loss C. An endurance athlete traveling from sea level to the mountains for a month of training D. An inactive person beginning an exercise program
What type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?
A. marker molecules B. receptor proteins C. channel protein D. carrier proteins E. enzymes