Which of the following statements correctly describe(s) the role or roles of heat in biological reactions?
a. heat from the environment is necessary for substrates to get over the activation energy barrier
b. the kinetic energy of the substrates is increased as the amount of heat in the system is increased
c. increasing the amount of heat in a system will always increase the rate of enzyme-catalyzed reactions
d. the 1st and 2nd choices are correct
e. the 2nd and 3rd choices are correct
Ans: d. the 1st and 2nd choices are correct
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Postindustrial societies have the majority of their work force engaged in tertiary and quaternary activities
Indicate whether this statement is true or false.
Which of the following is(are) an organism’s niche?
a. living and environmental factors b. its general ecological role c. the organism’s relationship with other living organisms d. All of these constitute part of an organism’s niche
A "summer cold" that lasts for weeks and is characterized by sore throat, mild fever, dry cough, and malaise may be (pneumococcal/staphylococcal/walking) pneumonia.
Fill in the blank(s) with the appropriate word(s).
Based on the following descriptions which fall under the domain Eukarya?
> Includes prokaryotes such as S. aureus > Includes fungi, protozoa, and animals > Domain with the closest relationship to the eukaryotic cell domain > Methane-producing bacteria > Extreme prokaryotes > Gram-positive bacteria > Humans