The three main kinds of seedless vascular plants are: ________, ________, and ________

Fill in the blank(s) with correct word


ferns; horsetails; club mosses

Biology & Microbiology

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In RNAi, imperfect pairing of miRNA to target mRNA results in ____ while perfect pairing of miRNA to target

mRNA causes ____.

a. blocking transcription of the target mRNA; mRNA degradation b. blocking translation of the target mRNA; mRNA degradation c. recruitment of siRNA; blocking translation of the target mRNA d. mRNA degradation; recruitment of siRNA e. blocking transcription of the target mRNA; blocking translation of the target mRNA

Biology & Microbiology

A patient is bitten by a dog with confirmed rabies infection. After treating the bite wound, the physician injects the patient with antibodies that are specific for the rabies virus to prevent the development of an active infection. This is an example of:

A) Natural active immunity B) Artificial active immunity C) Natural passive immunity D) Artificial passive immunity

Biology & Microbiology

The interaction between different species is

a. mutualism. b. parasitism. c. commensalism. d. competition. e. predation.

Biology & Microbiology

The RNA molecule is made up of how many strands?

a. 1 b. 2 c. 3 d. 6 e. 12

Biology & Microbiology