Which interactions with other organisms will help to determine the carrying capacity of Earth for humans?
A. cutting of forest to increase agricultural land
B. interracial mating
C. human death as a result of war
D. slight change in sex ratio
A. cutting of forest to increase agricultural land
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Describe protein synthesis in terms of initiation, elongation, and termination/release
What will be an ideal response?
Which event could result in an inversion?
A) A 360° rotation of a chromosomal region following two double-strand breaks in a chromosome's DNA. B) A crossover between two DNA sequences in different places on the same chromosome and that are inverted repeats of each other. C) A crossover between two repeated DNA sequences that are in different places on the same chromosome and are oriented in the same direction. D) A crossover between two repetitive sequences on different chromosomes.
A population of snakes lives in a valley. This population of snakes is 30% black and 70% brown in coloration. A dam is built to flood part of the valley, separating the snakes into two populations
West of the human-made lake, there's a very small population of all black snakes, while east of the lake, the population is much larger and retains the same percentage of black and brown coloration as before the dam was built. What process applies to this example? A) a homozygous population growth B) genetic drift C) inbreeding D) competitive exclusion
Which of the following is true of nitrogen?
A. N2 is scarce in the atmosphere, therefore, plants must obtain other sources of nitrogen. B. Animals require nitrogen from the food they eat for the synthesis of carbohydrates and lipids. C. Nitrogen-fixing bacteria convert N2 into compounds plants can utilize. D. Nitrogen is plant food and, therefore, provides plants with energy.