Which of the following macromolecules are polymers?
A. lipids
B. carboyhydrates
C. nucleic acids
D. proteins
E. All of the choices are correct.
E. All of the choices are correct.
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The mode of transmission of A. denitrificans can best be described as:
a. person-to-person contact. b. exposure to contaminated water. c. contaminated fluids or medical solutions. d. close contact with animals.
Which of the following statements is false?
a. The universe has a specific amount of energy. b. One form of energy can be converted to other forms of energy. c. Whenever energy conversions occur, some energy is converted to less concentrated forms. d. Once energy is utilized, it disappears. e. There are differences in the quality of energy.
Compare and contrast the processes of pollination and fertilization. What will be an ideal response?
Birds are different from reptiles in all of the following features except
A. bipedalism. B. the presence of feathers. C. endothermy. D. the presence of a flight skeleton. E. their lack of teeth.