Jenner's work with vaccinations depended on which of the following?
a. Trusting that the body produced agents that effectively overcame a disease-causing microbe
b. Exposing patients to the exact pathogen he was trying to protect them from
c. Selecting a microbe that could easily evade the immune system
d. Selecting a pathogen that was a bacterium
Ans: a. Trusting that the body produced agents that effectively overcame a disease-causing microbe
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Eric Kandel, who received a Nobel Prize for his discoveries in signal transduction pathways involved in memory,
performed experiments on ____.
a. Pacific sea hares b. sea anemones c. sea stars d. flatworms e. Drosophila
. If the nucleotide sequence ACTGAG represents the sticky end of a DNA molecule, to what other sticky end sequence
would it base pair?
a. TGACTC b. UGACUC c. ACTGAG d. ACUGUG e. GAGTCA
What is the relationship between photosynthesis and cellular respiration?
A. The reactants of photosynthesis are the products of cellular respiration and the reactants of cellular respiration are the products of photosynthesis. B. Organisms conduct neither photosynthesis nor cellular respiration to produce food. C. Organisms conduct either photosynthesis or cellular respiration to produce energy. D. Photosynthesis is a step within cellular respiration. E. Cellular respiration is a step within photosynthesis.
Which types of phenotypic ratios are likely to occur in crosses when dealing with a single gene pair for which all the genotypic combinations are of equal viability?
A) 12:3:1, 9:7 B) 1:4:6:4:1, 1:1:1:1 C) 9:3:3:1, 27:9:9:9:3:3:3:1 D) 2:3, 1:2 E) 1:2:1, 3:1