Which of the following are physical stimuli that influence plant responses?
A. touch; gravity; herbivores; pathogens
B. rocks; light; touch; music
C. water; gravity; temperature; soil minerals; microorganisms
D. wind; temperature; fungi
E. CO2; light; water vapor; gravity
Answer: E
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A graph of phenotypic variation similar to the
illustration below strongly suggests a. incomplete dominance. b. codominance. c. epistasis. d. polygenic inheritance. e. environmental effects on phenotype.
Amniocentesis involves
A) prenatal diagnosis of genetic defects in a fetus. B) tests for enzyme and protein deficiencies in a fetus. C) taking a sample of amniotic fluid with a needle. D) analysis for DNA and chromosome defects in a fetus. E) All of these
A drug binds to the active site of an enzyme. If it is bound to the active site of the enzyme, it prevents substrate binding. This drug would be considered a
A. noncompetitive inhibitor. B. competitive inhibitor. C. allosteric activator. D. allosteric inhibitor.
At what rate does carbon monoxide bind to hemoglobin over oxygen?
A) 10´ B) 20´ C) 100´ D) 200´