The landing platform for pollen in flowering plants is the
a. filament.
b. stigma.
c. anther.
d. style.
e. ovary.
B
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Consider solution A (pH 6) and solution B (pH 9). Which of the following statements is CORRECT?
A) Solution A is 3 times more acidic than solution B. B) Solution A is 300 times more acidic than solution B. C) Solution B is 1,000 times more alkaline (basic) than solution A. D) Solution B is 3,000 times more alkaline (basic) than solution A.
Methylation regulates transcription by ____
a. adding a methyl group to cytosine bases of DNA b. adding a methyl group to cysteine residues on RNA polymerase II c. adding a methyl group to cysteine bases of DNA d. adding a methyl group to cytosine residues on RNA polymerase II e. interfering with the chromatin remodeling process
Early mammals differed from reptiles in many respects, including:
A) feeding their young milk. B) the number of legs used for walking. C) eating other organisms for food. D) internal versus external fertilization.
Diarrhea, nausea, and vomiting are signs and symptoms associated with which of the following viruses?
A. coxsackie A B. enterovirus C. rhinovirus D. echovirus E. norovirus