Topographic features, such as mountains and valleys, influence the climate of a region

Indicate whether the statement is true or false


TRUE

Biology & Microbiology

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You are asked to study a new species, and you are presented with a miniscule amount of DNA from that species. If you do not find a way to increase the volume of the DNA sample, you will not be able to work with the sample at all. which of these techniques amplifies DNA?

A. electrophoresis. B. PCR. C. DNA fragmentation. D. cladistics.

Biology & Microbiology

Since viruses have no active methods of entering plant cells, they must rely upon mechanically caused wounds, vegetative propagation of plants, grafting, seed, pollen, and being carried on the mouth parts of chewing insects. Tobacco mosaic virus is most commonly introduced into plants through small wounds caused by handling and by insects chewing on plant parts. What would prevent viruses from easily entering plant cells?

a. The cell wall on the virus b. The plasma membrane on the plant c. The cell wall on the plant d. The plasma membrane on the virus e. The protein coat on the virus

Biology & Microbiology

What differences do you observe between the Rhizopus zygotes and Rhizopus sporangia?

What will be an ideal response?

Biology & Microbiology

Fluorine, bromine, chlorine, and iodine are classified as nonmetallic

A) halogens. B) phenolics. C) alcohols. D) detergents.

Biology & Microbiology