Electromagnetic energy of which of the
following wavelengths can damage DNA?
a. 300 micrometers
b. 300 centimeters
c. 300 nanometers
d. 300 millimeters
e. 300 meters
C
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In plant cells, the first sign of cytokinesis is the formation of a cell plate instead of a cleavage furrow. The cell plate is formed because plant cells
A. have a cell wall. B. don't divide after mitosis, but become one larger cell with multiple nuclei. C. have a nucleus. D. don't have a cell membrane. E. All of the answer choices are correct.
Trypan blue is
a. taken up by living cells. b. taken up by dead cells. c. taken up by both living and dead cells. d. used to identify plant cells.
The incorporation of DNA into the information transfer system was advantageous because DNA is a(n) catalytic
molecule. ______________ Indicate whether the statement is true or false.
The common infection known as "pink eye" is an infection of the
A) sclera. B) cornea. C) iris. D) conjunctiva. E) retina.