A ribozyme is _____

A) a catalyst that uses RNA as a substrate
B) an RNA with catalytic activity
C) an enzyme that catalyzes the association between the large and small ribosomal subunits
D) an enzyme that synthesizes RNA as part of the transcription process


B

Biology & Microbiology

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Activated G proteins ____

a. trigger endocytosis of the G-protein-coupled receptor b. bind to second messengers c. separate into two parts d. activate a kinase e. inhibit guanylyl cyclase

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How many times does DNA wrap around a histone?

a. 1 b. 2 c. 4

d. 6 e. 10

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When you nod your head "yes," what type of movement are you using?

A. inversion B. rotation C. flexion and extension D. circumduction E. adduction and abduction

Biology & Microbiology

Arrange the following characteristics in order from the earliest to the most recent to evolve. (1 ) fruits (2 ) ovules (3 ) multicellular embryos (4 ) vascular system (5 ) alternation of generations b. 1, 2, 3, 4, 5 c. 3, 2, 4, 5, 1 d. 5, 2, 4, 3, 1 e. 5, 3, 4, 2, 1 f. 3, 5, 4, 2, 1

What will be an ideal response?

Biology & Microbiology