Into what units are the myofibrils of skeletal muscle organized?

A) A discs
B) sarcomeres
C) Z discs
D) antagonistic pairs


B

Biology & Microbiology

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Cellular membranes are

A. fluid. B. solely composed of lipids. C. composed of a single layer of amphipathic molecules. D. selective to the transport of gases and small molecules only. E. characteristic of eukaryotes, but not prokaryotes.

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Food intoxication usually has a shorter incubation period than food-borne infection.

Answer the following statement true (T) or false (F)

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Four of the five choices listed below are parts of the

ecosystem. Select the exception. a. energy b. raw materials and nutrients c. decomposers d. producers e. consumers

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Staphylococcus aureus food poisoning is long-lasting because ingested bacteria produce enterotoxins in the digestive system

Indicate whether the statement is true or false

Biology & Microbiology