What is the best term for an RNA molecule that possesses catalytic activity?

A. ribozyme
B. ribosomal RNA
C. RNase
D. enzyme


Ans: A. ribozyme

Biology & Microbiology

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Damage to sensory receptor cells would most likely result in _____

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A relationship between two species in which one species lives in or on the other is

A. predation. B. niche sharing. C. resource partitioning. D. coevolution. E. symbiosis.

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Disease in which a person's immune system attacks a person's own cells is known as 

A. immunodeficiency diseases. B. autoimmune diseases. C. allergic reactions. D. rejection responses.

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Which of the following is an urban, not a rural, sustainability plan?

A. plant multipurpose trees B. plant cover crops C. use integrated pest management D. use green roofs E. use low-flow or trickle irrigation

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