The genomes of ________ cannot function as mRNA and therefore these viruses must bring at least one RNA-dependent RNA polymerase into the host cell during entry.

A. double-stranded DNA viruses
B. negative-strand RNA viruses
C. single-stranded DNA viruses
D. positive-strand RNA viruses


Answer: B

Biology & Microbiology

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Which of the following examples would be undergoing secondary succession? Check all that apply.  

_____  an abandoned potato farm _____  a coastal grassland damaged by a hurricane _____  an abandoned landfill _____  rocks in a national park covered by mosses and lichens _____  a garden bed that has been weeded Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about secondary succession? What other information is related to the question?    Choose Answer: Given what you now know, what information is most likely to produce the correct answer?   Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?  

Biology & Microbiology

Which of the following features would tend to

promote water reabsorption by the vertebrate kidney? a. many nephridia b. a long loop of Henle c. a short collecting duct d. a short distal tubule e. a high filtration rate

Biology & Microbiology

Which factor is fundamentally responsible for the character of arctic tundra soils?

A) secretion of acid by lichens and plant roots B) permafrost C) warm, wet summers D) abundant winter snow

Biology & Microbiology

Crop plants modified to be resistant to insect damage produce Bt-toxin from a (bacterial/fungal/synthetic) gene.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology