Ticks, lice, and mosquitoes often serve as (carriers/transporters/vectors) by hosting and transmitting pathogenic microbes.
Fill in the blank(s) with the appropriate word(s).
vectors
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An enzyme has a total of four active sites. When you denature the molecule and study its composition, you find that each active site occurs on a different polypeptide. Which of the following hypotheses does this observation support?
A) The enzyme is subject to regulation. B) The enzyme requires a cofactor to function normally. C) The protein's structure is affected by temperature and pH. D) The protein has quaternary structure.
Which of the following is considered a peptide hormone?
a. estrogen b. epinephrine c. thyroxine d. insulin
In a dominance hierarchy, why would subordinate members remain part of the group?
What will be an ideal response?
Which of the following best explains why modern seedless vascular plants are confined largely to wet or humid environments?
a. They require soil. b. They require reflected sunlight. c. They require symbiotic bacteria in the water. d. They require external water for reproduction.