The formation of peptide bonds is catalyzed by which portion of the bacterial ribosome?

a. Proteins of the small subunit
b. 16S rRNA
c. Proteins of the large subunit
d. 23S rRNA


Ans: d. 23S rRNA

Biology & Microbiology

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When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as ________

A) tetanus B) twitch C) fatigue D) summation

Biology & Microbiology

The child shown in the figure below is not feeling well. The poster says "No Antibiotics Please?" This is because his illness is caused by a virus.

a. true b. false

Biology & Microbiology

The rules of naming organisms are called

A. taxonomy. B. nomenclature. C. classification. D. binomials. E. identification.

Biology & Microbiology

The capacity of photosynthesis to convert ________ energy into ________ energy provides both a nutritional and an energy basis for all heterotrophic living things.

A) Atomic; chemical B) Solar; thermal C) Solar; chemical D) Chemical; atomic E) Chemical; solar

Biology & Microbiology