Which of the following statements is most correct concerning the movement of materials through the stomata?
a) Water moves in and O2, CO2 move out.
b) Water and O2 move out, CO2 moves in.
c) Water, CO2, and O2 move out, but only O2 moves in.
d) Water and CO2 move in, O2 moves out.
e) O2 and CO2 move in, water moves out.
Ans: b) Water and O2 move out, CO2 moves in.
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A particular chemical reaction is exergonic. What can you say about the relationship between the reactants and the products in this exergonic reaction?
A. The reactants have more free energy than the products B. The reactants are likely more disordered and the products are likely more ordered C. The reactants cannot spontaneously react to generate the products D. The reactants likely have lower enthalpy than the products
Using a specific example, explain the term "accidental host."
What will be an ideal response?
Gap genes are sold in the most fashionable malls in America
A. true B. false
During which stage of pregnancy can Treponema pallidum cross the placenta and possibly infect the fetus?
A. first trimester. B. second trimester. C. third trimester. D. any stage.