Competitive inhibition of enzymes occurs
A. when a substance other than the substrate binds at the active site of an enzyme.
B. when the product, or other substances, instead of the reactant, bind to the active site of the enzyme.
C. when a substance binds to an enzyme at a site away from the active site.
D. by blocking the production of an enzyme.
E. when the product, instead of the reactant, of a reaction binds to the active site.
A. when a substance other than the substrate binds at the active site of an enzyme.
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Which of the following is not true regarding the decimal reduction time?
A. Once the number of organisms has been reduced to 10%, the killing may slow due to resistant strains that remain in the population B. It is the time taken to reduce the number of pathogens in a sample by one log cycle C. It is a measure of the effective concentration of disinfectant that kills within a specific time period D. The Z value is the temperature equivalent of the D value
The basic cells that the body uses for rapid communication and control are
a. neurons. b. neuroglia. c. chondrocytes. d. formed elements. e. nerves.
Why is color-blindness more common in males than in females?
a. Because females would have to receive one copy of the recessive color blindness gene to actually express the trait. b. Because a male only needs to receive the recessive gene from his mother to be color-blind. c. Because color-blindness is an Y-linked trait. d. Females are hemizygous e. Males are never hemizygous
Why is chlamydia much more common than syphilis?
A. Many chlamydia infections are asymptomatic. B. Syphilis can penetrate a condom whereas chlamydia cannot. C. Chlamydia is viral, and viral diseases spread much quicker. D. Chlamydia is spread via droplet inhalation. E. Chlamydia is resistant to most antibiotics.