Compound B is a ____________________.
Assume that you are taking an organic chemistry class. Your teacher has given you four organic compounds to analyze. She tells you that one is a carbohydrate, one is a hydrocarbon, one is a nucleic
acid, and one is a protein.
You discover that Compound B contains only carbon, hydrogen, and oxygen. Of the four types of compounds which were given to you to analyze, which one best describes Compound B?
carbohydrate
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What is one of the ways plants overcome dispersal issues associated with vegetative reproduction?
A. Horizontal stems grow away from the parent, allowing new shoots to grow at a distance from the parent. B. Specialized seed coats can enable wind dispersal. C. Fruits encourage animal-assisted dispersal. D. Plantlets cluster near the parent plant. E. Plant dispersal is not an issue for vegetatively reproducing plants.
Osmosis is the diffusion of water across a membrane in response to the concentration of one or more of the ________.
A. solutes B. cells C. membranes D. compartments
The scientist who first determined the complete amino acid sequence of a protein (insulin) was
a. Christian Anfinsen. b. John Kendrew. c. Linus Pauling. d. Frederick Sanger.
Male hummingbirds flash a patch of iridescent feathers on their neck called the gorget. This behavior makes them very visible. Why advertise their presence to a predator?
A. Predators cannot see colors so are not alerted. B. Hummingbirds are so fast that predation is not a large factor for them. C. The benefits of defending a territory exceed the costs of predation. D. This is an example of a maladaptive behavior that decreases overall fitness.