What is the role of an enzyme in a cell?
A. To speed up chemical reactions
B. To become consumed during a chemical reaction
C. To increase the energy required to make a reaction occur
D. To provide energy to the cell
Ans: A. To speed up chemical reactions
You might also like to view...
Temperature is perhaps the most important factor in the distribution of organisms because
A. water is more scarce in warmer environments. B. most organisms are unable to regulate their body temperature precisely. C. many organisms are able to grow faster in warmer climates. D. the metabolic optimum for endothermic animals is in temperate areas. E. wind amplifies the effect of cool temperatures.
A saturated hydrocarbon molecule has
a. three double bonds. b. one double bond. c. one double and one triple bond. d. all single bonds. e. all triple bonds.
All of the following are appropriate strategies for overcoming drug resistance in bacteria except ________.
A. prudent use of antibiotics when treating viral infections B. patient compliance with dosage instructions when taking antibiotics C. decreasing the use of antibiotics in agriculture D. heightened infection control in health care facilities
In which condition are both alleles expressed in the heterozygous phenotype?
A) complete dominance B) codominance C) pleiotropy D) epistasis