How are clades different from traditional Linnaean taxonomic groups?
a) clades contradict classification by kingdoms
b) clades group organisms by visible similarities only
c) clades make comparisons of organisms gene by gene
d) clades focus on derived characters
Ans: d) clades focus on derived characters
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a. allosteric activation b. gene regulation c. receptor integration d. protein mutation e. cross-talk
If the decolorizer is not left on long enough in the Gram-staining procedure, gram-positive organisms will be stained ________ and gram-negative organisms will be stained ________.
A. purple; colorless B. purple; purple C. purple; pink D. pink; pink
Primary producers obtain energy from a(n) __________ source and use it to build organic compounds from inorganic
starting materials. Fill in the blank(s) with the appropriate word(s).
Most plants store carbohydrates in the form of
a. glucose. b. sucrose. c. starch. d. water.