A cougar investing more time hunting a mountain goat than a jackrabbit is an example of ____
a. a specialist species
b. a generalist species
c. optimal foraging theory
d. predation
e. high prey density
ANSWER: c
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The Gram stain distinguished bacteria into two types of cells. This stain is dependent on the amount of in the cell wall.
A. glucose B. a complex lipid C. cellulose D. peptidoglycan E. chitin
antioxidant enzyme component
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Mutations are categorized by how the nucleotide sequence is changed. Insertions and deletions are called frameshift mutations. What is the relationship between the location of a frameshift mutation in a gene and its impact on the protein produced?
A) Frameshift mutations near the middle of the gene have the greatest effect on the protein produced. B) Frameshift mutations near the beginning of the gene have the greatest effect on the protein produced. C) Frameshift mutations near the end of the gene have the greatest effect on the protein produced. D) A frameshift mutation at any location affects the protein produced equally
Aerobic cyanobacteria carry out the reactions of nitrogen fixation in
A) akinetes. B) endospores. C) heterocysts. D) chloroplasts. E) lamellae.