The nucleus of an atom has a positive charge because of the _______ .
a. electrons
b. neutrons
c. protons
d. valence shell
c. protons
Biology & Microbiology
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Which of the following is a waste product of photosynthesis?
a. carbon dioxide b. oxygen c. sugar d. water
Biology & Microbiology
Which antimicrobial method does not sterilize?
A. Ethylene oxide gas B. Ionizing radiation C. Pasteurization D. Autoclave
Biology & Microbiology
Discuss the functions of the large intestine
What will be an ideal response?
Biology & Microbiology
In the presence of both lactose and glucose, which of the following occurs with the E. coli lac operon?
A. The lacI gene does not produce repressor. B. The lacZ and lacY genes are fully expressed. C. The cAMP-CAP complex is not available to bind near or at the lac promoter. D. Lactose is converted to glucose and galactose. E. Lactose binds to the operator.
Biology & Microbiology