Which action that spreads pathogens is the simplest to prevent?

1.inhalation
2.indirect contact
3.contact with a vector
4.direct contact
4

Biology & Microbiology

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The evolutionary process that created chloroplasts and mitochondria is:

A. punctuated equilibrium. B. evolution. C. symbiosis. D. endosymbiosis.

Biology & Microbiology

What is the relationship between operons and transcription units?

a. They are two terms for the same thing. b. An operon is made up of a transcription unit and associated regulatory DNA sequences. c. A transcription unit is made up of an operon and associated regulatory DNA sequences. d. An operon is comprised of multiple transcription units. e. A transcription unit is comprised of multiple operons.

Biology & Microbiology

Golden rice:

a) could help the 250,000 children each year who are at risk of blindness due to vitamin A deficiency. b) supplies more protein. c) grows without a husk, thereby reducing the processing required before it can be consumed. d) supplies more vitamin A in one serving than an individual needs in a full week. e) can make vitamin A without beta-carotene.

Biology & Microbiology

The tRNA bases called the ______ are complementary to three consecutive nucleotides on an mRNA molecule

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

Biology & Microbiology