Photoautotrophs use __________.

a. light as an energy source and CO2 as a carbon source
b. light as an energy source and methane as a carbon source
c. N2 as an energy source and CO2 as a carbon source
d. CO2 as both an energy source and a carbon source
e. H2S as an energy source and CO2 as a carbon source


Answer: a. light as an energy source and CO2 as a carbon source

Biology & Microbiology

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____ is (are) the study of body plans and

structures.

a. Evolution b. Biogeography c. Comparative morphology d. Comparative physiology e. Botany

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What are the two components of the human placenta?  

A.  chorionic frondosum and chorionic villus B.  chorionic frondosum and decidua basalis C.  decidua basalis and chorionic villus D.  chorionic villus and endometrium E.  chorionic frondosum and amnion

Biology & Microbiology

Common commercial benefits of microorganisms include synthesis of

A) riboflavin. B) acetone. C) insulin. D) aspirin. E) riboflavin, acetone and insulin.

Biology & Microbiology

In wolves, gray coat color (G) is dominant to black (g) and brown eyes (B) are dominant to blue (b). The genes that control these traits are located on different chromosomes. The alpha male of the pack has the dominant phenotype for both traits and is heterozygous for both traits. The alpha female has brown eyes and a black coat; she is heterozygous for eye color. Which option represents gametes that would be made by the alpha female?

A. Bb and gg B. B; b; and g C. Bg and bg                      D. BG; Bg; bG; bg E. None of the answers are correct.

Biology & Microbiology