The actions of insulin and glucagon are
a. synergistic.
b. antagonistic.
c. cooperative.
d. permissive.
e. mutualistic.
Answer: b
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Each orbital can hold ________ electron(s)
a. 3 b. 1 c. 4 d. 2
Which cytoskeletal element anchors the proteins actin and myosin to strengthen the cytosol?
a. intermediate filaments b. flagella c. collagen d. microfilaments e. centrioles
Which of the following statements is FALSE concerning the bonding of amino acids?
A. The bond formed between two amino acids is called a peptide bond. B. When two amino acids combine, the amino group of one molecule will combine with the acid group of the second molecule. C. The addition of one water molecule is required to combine two amino acids. D. A series of amino acids bonded together is a polypeptide.
Which muscle list of structures is correctly organized from large to small?
A. muscle, muscle cell, myofibril, sarcomeres, filaments B. muscle, sarcolemma, myofibrils, actin filaments, myosin filaments C. muscle, muscle fibers, sarcomeres, filaments, myofibrils D. muscle cells, myofibrils, filaments, sarcoplasm