Discuss coevolution as it relates to predator-prey interactions. Include a brief discussion of two
specific examples. What will be an ideal response?
Predation has resulted in a co-evolutionary “arms race”of predator strategies (more efficient ways to
catch prey) and prey strategies (better ways to escape the predator).
An example of a predator strategy is increased speed of the brown pelican chasing fish. Some plants
escape predators by physical characteristics such as spines and thorns which discourage herbivore
predators.
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Typical electron donors used by dissimilative sulfate-reducers are
A) hydrogen, water, and hyrdrogen sulfide. B) hydrogen, lactate, and pyruvate. C) carbon dioxide, hydrogen, and water. D) sulfate, sulfur, and thiosulfate.
A ________ hydrolyzes a protein into its constituent amino acid monomers and a ________ enzyme removes amino groups from the amino acids.
Fill in the blank(s) with the appropriate word(s).
What is the purpose of getting a "flu shot" every year?
A. It lets your body get used to having the flu so that you won't feel as sick when you actually do get the flu. B. It exposes your immune system to antigens present on the flu virus, and antibodies can be made by the immune system C. It exposes your immune system to antibodies present on the flu virus, and antigens can be made by the immune system D. It exposes your immune system to the virus and causes gene recombination in memory B-cells.
Identical twins can result from ____
a. the fusion of two sets of identical gametes b. a division of a zygote into two separate cells that develop into two separate embryos c. the fusion of two paternal gametes with a single maternal gamete that then divides d. a lack of chromosomal separation during meiosis resulting in gametes that are diploid e. a mechanism that is not understood