Although the epidermis lacks chloroplasts, it plays an essential role in photosynthesis. What features
of the epidermis contribute to the overall photosynthetic success of a plant? What will be an ideal response?
Concepts to Consider: Cuticle prevents loss of water needed for photosynthesis; stomata and guard
cells allow diffusion of carbon dioxide, oxygen (open during day, closed at night).
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An advantage of storing energy as fat as opposed to glycogen is that fat
a. feeds sugars directly into glycolysis. b. requires more associated water during storage, providing a water reserve. c. stores more calories in each gram. d. is easier to transport through the bloodstream. e. provides a storage reserve for B vitamins.
The human ancestor whose populations dispersed from Africa to other parts of the world was
a. Homo sapiens b. Australopithecus afarensis. c. Pan troglodytes. d. Homo erectus.
A(n) ____ is a polymer.
A. monosaccharide B. amino acid C. nucleotide D. polypeptide
Which situation is MOST likely to result in death by Bacillus anthracis?
a. being bitten by an insect b. petting a horse c. shoveling dirt on a windy day d. ingesting stale fruit