What is the major lipid found in membranes?

A. cholesterol
B. phospholipids
C. steroids
D. saturated fatty acids
E. triglycerides


Answer: B

Biology & Microbiology

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If the DNA triplets are ATG?CGT, the mRNA

codons are a. AUG?CGU. b. ATG?CGT. c. UAC?GCA. d. UAG?CGU. e. all of these.

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Which population would have the lowest ecological footprint?

a. United States b. China c. India d. African nations e. Great Britain

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What process refers to dramatic phenotypic changes that sometimes occur in evolution, such as the

appearance of feathered wings during the evolution of birds? a. paedomorphosis b. gradualism c. macroevolution d. allopolyploidy e. microevolution

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A facultative anaerobe can perform both aerobic and anaerobic respiration?

a. true b. false

Biology & Microbiology