Which of the following represents alleles or genes
responsible for skin color?
a. SLC24A5 in Africans
b. DCT in Chinese
c. Both SLC24A5 and DCT
d. WHT genes in Europeans
e. All of these
Answer: c
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A chemical produced by one animal that is usually only detectable by another animal of the same species is called a
A) releaser. B) subliminal suggestion. C) pheromone. D) hormone. E) neurotransmitter.
A cell contains 30% solute, while the external environment contains 10% solute. What kind of solution is this cell sitting in?
a. hypotonic b. isotonic c. hypertonic d. osmotonic
Gibberellins
a. were first isolated by a Japanese researcher working with “foolish seedling” rice plants. b. were first isolated from a fungus. c. are represented by more than 80 different types. d. promote stem elongation. e. include all of these descriptions.
Which of the following is the correct order of steps in the EGF–cAMP signaling pathway?
A) ligand binding–G-protein activation– adenylyl cyclase activation–cAMP production–protein kinase A activation B) ligand binding–protein kinase A activation–G-protein activation–adenylyl cyclase activation–cAMP production C) G-protein activation–ligand binding–adenylyl cyclase activation–cAMP production–protein kinase A activation. D) ligand binding–G-protein activation–adenylyl cyclase activation–cAMP production–protein kinase A activation E) ligand binding–adenylyl cyclase activation–G-protein activation–cAMP production–protein kinase A activation