In women, the combined effects of estrogen and progesterone cause a decrease in GnRH levels
Indicate whether the statement is true or false
TRUE
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The _____ forms of the electron carriers NAD+/NADH and FADH/FADH2 have high potential energy
A. oxidized B. reduced C. phosphorylated D. carboxylated E. None of the answer options is correct.
How do negative regulators such as the Lac repressor prevent RNA polymerase from initiating transcription?
A) by blocking the ribosome binding site B) by forming a loop in the operator that restricts the passage of the polymerase C) by physically blocking the DNA binding site of RNA polymerase D) by binding to the polymerase to inhibit its catalytic activity
Which is a geological process that reduces atmospheric carbon dioxide?
a) burning of forests b) rainfall c) growth of algae d) formation of fossil fuels
Which of the following is an example of pasteurization?
A) A public toilet is treated with disinfectants. B) A surgeon washes her hands before surgery. C) Heat is used to kill potential pathogens in apple juice. D) An autoclave is used to prepare nutrient agar. E) A nurse prepares an injection site with an alcohol swab.