What is currently a main contaminate of beaches?

a. Legally dumped wastes
b. Release of raw sewage
c. Overflowing storm drains
d. None of these choices


c

Biology & Microbiology

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+ssRNA has the same sense as:

A. DNA B. mRNA C. UNA D. dsRNA E. dsDNA

Biology & Microbiology

The cells of cnidarians use relatively little energy, so their demand for oxygen is quite low. They deliver oxygen to their internal cells by pumping water into and out of a central chamber called the ________

Fill in the blank(s) with correct word

Biology & Microbiology

If a scientist changed a cell's ionic composition and complementarity between DNA strands could no longer occur, what would the scientist first detect?

A) cell membranes would become less permeable B) RNA would start binding to DNA C) DNA strands become shorter D) ribosomes would move into the nucleus E) DNA becomes single stranded

Biology & Microbiology

All of the following are enzymes that increase virulence EXCEPT

a. proteases. b. nucleases. c. lipases. d. cellulases.

Biology & Microbiology