Which membrane transport mechanism requires ATP?
a. facilitated diffusion
b. simple diffusion
c. osmosis
d. active transport
Ans: d. active transport
Biology & Microbiology
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Many tadpoles excrete ____, whereas adult frogs excrete ____
A. ammonia; urea B. urea; ammonia C. uric acid; ammonia D. uric acid; urea E. urea; uric acid
Biology & Microbiology
__________ line human nasal passages. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Which bacteria help keep the vaginal pH below the range of tolerance of other bacteria and most fungi?
A. Corynebacterium diphtheriae B. Lactobacillus C. Clostridium botulinum D. Proteus E. Moraxella
Biology & Microbiology
Which of the following is not a greenhouse gas?
A. hydrofluorocarbons B. nitrous oxide C. oxygen D. methane E. carbon dioxide
Biology & Microbiology