A base substitution that changes a codon coding for an amino acid to a stop codon is called a
a. frameshift mutation.
b. missense mutation.
c. silent mutation.
d. nonsense mutation.
Answer: d. nonsense mutation.
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Biomes are broad regional areas with defined flora and fauna. Which one of the following choices correctly identifies the biomes shown plotted in the graph of precipitation versus temperature?
A. Tropical Rain forest = 1; Desert = 2; Tundra = 3; Grassland = 4
B. Tropical Rain forest = 1; Desert = 3; Tundra = 4; Grassland = 2
C. Tropical Rain forest = 3; Desert = 4; Tundra = 1; Grassland = 2
D. Tropical Rain forest = 3; Desert = 1; Tundra = 2; Grassland = 3
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you already know about biomes?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which animal in not a natural host for E. coli O157:H7?
a. Goats b. Deer c. Humans d. Sheep e. Cows
The length of a butterfly tongue perfectly matches the nectar tube of a flower it pollinates. This is an example of
A) competition. B) amensalism. C) phenotypic plasticity. D) coevolution.
The normal flora of the adult large bowel consists predominantly of which of the following?
A. Staphylococcus B. Enterococcus C. Anaerobic species D. Enterobacteriaceae