Which of the following is not a basic characteristic of life?
a. Taking in energy and materials.
b. Sensing and responding to changes in the environment.
c. Locomotion.
d. Reproducing and growing.
e. Consisting of one or more cells.
C
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Photosynthetic protists are informally referred to as:
A. protozoa. B. plants. C. fungi. D. algae.
The cell wall of plants is composed primarily of cellulose, which is a network of highly branched ____
a. carbohydrates b. nucleic acids c. proteins d. steroids e. phospholipids
DNA polymerases used in PCR
A. must remain active at very cold temperatures. B. include Taq polymerases and Vent polymerase. C. use an RNA template to make complementary DNA. D. are labeled with fluorescent dyes.
Three "turns" of the Calvin cycle generate a "surplus" molecule of glyceraldehyde 3-phosphate (G3P). Which of the following is a consequence of this?
A) Formation of a molecule of glucose would require nine "turns." B) G3P more readily forms sucrose and other disaccharides than it does monosaccharides. C) Some plants would not taste sweet to us. D) The formation of sucrose and starch in plants involves assembling G3P molecules, with or without further rearrangements. E) Plants accumulate and store G3P.