What type of charge do histones tend to carry?

a. a mixture of positive and negative charges
b. no charge
c. a negative charge
d. a positive charge


Ans: d. a positive charge

Biology & Microbiology

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In Drosophila, the sex of an individual is determined by  

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The LexA protein is:

A. the repressor of the SOS response. B. the coprotease for the cleavage of RecA protein. C. a DNA repair enzyme. D. a regulatory protein for the lac operon.

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You can be outside on an day where the air temperature is 85oF for hours without getting cold. However, you will get cold in 85oF water before too long unless you are very active. This difference is due to higher heat _____ in water relative to air.

A. radiation B. conduction C. convection D. evaporation E. transpiration

Biology & Microbiology

This apparatus was used in the primitive Earth

atmosphere simulation experiments performed by a. Stanley Miller. b. Thomas Brock. c. Australian researchers. d. Jeon Kwang. e. Lynn Margulis.

Biology & Microbiology