Regulation & Environmental Sensing

What will be an ideal response?


•Gene regulation is done to respond to environmental changes - how are those changes sensed?
1.Some changes can transmit directly into the cell - tetracycline resistance!
2.Others are sensed on the cell surface and a signal is sent into the cell

Biology & Microbiology

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The eggs of Paragonimus mexicanus measure approximately 80 µm by 40 µm, are unembryo-nated and operculated, and have thick shells that are brownish-yellow. An individual with this infection has most likely traveled to which endemic area?

a. Japan b. Africa c. New Guinea d. South America

Biology & Microbiology

Life tables provide data concerning

a. expected life span. b. reproductive age. c. death rate. d. birth rate. e. all of these.

Biology & Microbiology

Drugs that prevent the formation of the bacterial cell wall are

A) quinolones B) beta-lactams C) aminoglycosides D) tetracyclines

Biology & Microbiology

Which statement concerning fertilization in ferns is true?

A. The sporophyte grows from a spore. B. The process requires water. C. The fertilization product is haploid. D. A spore is the product of fertilization. E. The process occurs outside the egg-producing structure.

Biology & Microbiology