________ are the units of muscle contraction.

a. Actin
b. Myofibrils
c. Myosin
d. None of these choices

e. Sarcomeres


e

Biology & Microbiology

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An organism that can exist in both oxygen and oxygen-free environments is a(n) ________.

A. facultative anaerobe B. obligate anaerobe C. microaerophile D. obligate aerobe E. aerobe

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Please match each category of disease with the correct example.

A. Seizure B. Tumor C. Movement D. Injury E. Mood F. Headache G. Neurodegenerative H. Demyelinating I. Infectious  J. Sleep

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An autoimmune disease in which the synovial membrane thickens and becomes inflamed is called:a

osteitis. b. osteoporosis. c. rheumatoid arthritis. d. osteoarthritis. e. osteon disease

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Alterations in DNA, whether they occur by mistake during replication, or as a result of some type of damage, can lead to mutations. Mutations, however, are rare in terms of leading to actual damage to a cell. Why?

What will be an ideal response?

Biology & Microbiology