Enzymes catalyze a reaction by
A. increasing the activation energy of the reaction.
B. decreasing the amount of energy released by the reaction.
C. decreasing the activation energy of the reaction.
D. increasing the amount of energy released by the reaction.
Answer: C
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Thermotoga are hyperthermophiles and appear relatively closely related to Archaea in comparison to other bacteria such as Salmonella
Indicate whether the statement is true or false.
Organisms that have nutritional needs that are relatively complex and require extra media components to be used for growth are called:
a. fastidious. b. capnophiles. c. neutrophils. d. halophiles.
Stress can have a significant effect on the body. Chronic stress
a. may lead to excessive stimulation of neurons. b. is associated with elevated levels of epinephrine from the adrenal cortex. c. is associated with elevated levels of cortisol from the adrenal cortex. d. may lead to increased blood flow to the brain, especially the hippocampus. e. may suppress stimulation of neurons.
Which of the following individuals pioneered the use of chemicals to reduce the incidence of infections during surgery?
A) Nightingale B) Snow C) Ehrlich D) Lister E) Semmelweis