What type of covalent bond is formed between amino acid molecules during protein synthesis?
A. electrovalent bond
B. amino bond
C. peptide bond
D. hydrogen bond
E. primary bond
C
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The posterior "bump" of the elbow is the olecranon of the ulna.
Answer the following statement true (T) or false (F)
In ________, the immune system deliberately raises the body temperature to destroy invading pathogens.
A. adaptive immunity B. fever C. natural immunity D. phagocytosis
Muscarinic receptors are proteins that bind the neurotransmitter
A. acetylcholine. B. epinephrine. C. norepinephrine.
Why are you able to repeatedly contract and relax your muscles of respiration, allowing you to breathe in and breathe out?
a. As soon as all of the Ca2+ stored in the lateral sacs of the sarcoplasmic reticulum is used up, muscle relaxation occurs. b. After the muscle cell becomes excited, acetylcholinesterase rapidly destroys acetylcholine. c. When there is no longer a local action potential in the muscle cell, Ca2+ is actively transported back into the lateral sacs of the sarcoplasmic reticulum, and muscle relaxation occurs. d. Both (b) and (c) above. e. All of these answers.