Refer to the accompanying figure. In which part of the muscle fiber are calcium ions stored?

a. 2
b. 3
c. 4
d. 5
e. 6


b

Biology & Microbiology

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Bayliss and Starling first demonstrated the existence

of hormones when they were studying which of the following? a. thymus b. islets of Langerhans c. bursa of fabricus d. pancreas e. none of the above

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Why are mitochondria present in the sperm?

a. to provide energy for the movement of the flagellum b. to provide energy for the acrosome to penetrate the egg c. to provide nutrients for the sperm d. to provide nutrients for the developing embryo e. to provide energy for the maturation of the sperm

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which hormone suppresses spermatogenesis without affecting testosterone secretion

What will be an ideal response?

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In the scientific name Bacillus cereus, cereus is the

A. Species B. Genus C. Family

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