Anoxygenic photosynthesis occurs in which of the following organisms?


Answer: purple and green sulfur bacteria

Biology & Microbiology

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What forms during aerobic respiration that is detoxified by antioxidant molecules in the cell's cytoplasm?

a. free electrons b. alcohol c. reduced coenzymes d. free radicals e. carbon dioxide

Biology & Microbiology

Nucleotides used in automated DNA sequencing are

tagged with a a. radioactive isotope. b. heavy form of nitrogen. c. pigment. d. modified deoxyribose sugar. e. none of these.

Biology & Microbiology

Environmental factors typically influence inheritance of ________

A) codominance B) dominantly inherited traits C) polygenic traits D) trihybrid crosses E) multiple alleles

Biology & Microbiology

Based on the number of species, the most successful extant phylum of plants is the

A. Coniferophyta. B. Hepaticophyta. C. Charophyta. D. Pterophyta. E. Gnetophyta. F. Anthophyta.

Biology & Microbiology