Green and purple sulfur bacteria will carry out anaerobic photosynthesis primarily in

A. zone 1.
B. zone 2.
C. zone 3.
D. zone 4.
E. both zones 1 and 2.


Answer: C

Biology & Microbiology

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In the systemic circuit, blood flow is regulated by precapillary sphincter muscles that open and close access to capillary beds.

a. true b. false

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Classic albinism is an autosomal recessive mutation. However, two parents with albinism may produce a child with normal pigment. How can this be so?

What will be an ideal response?

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Wood and cotton cloth are composed of

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