Muscle fibers (muscle cells) are filled with myofibrils which in turn are filled with the contractile filaments myosin and actin.

a. true
b. false


Answer: a. true

Biology & Microbiology

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Epitokes of polychaetes are:

a. feeding structures. b. respiratory structures. c. reproductive individuals. d. excretory structures. e. feeding individuals.

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Given the following Southern blot results, which lane represents a heterozygous individual?

What will be an ideal response?

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What characteristics of Caenorhabditis elegans make it useful in molecular genetics studies? What will be an ideal response?

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Which organelle is responsible for degrading waste within the cell?

A) Golgi apparatus B) lysosome C) endoplasmic reticulum D) ribosome E) chloroplast

Biology & Microbiology