Why do cells not have membrane transport proteins for O2?
What will be an ideal response?
Because oxygen can dissolve in the lipid bilayer and diffuse in and out rapidly without the need for a transporter
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Genetic manipulation has enabled chestnut trees to
a. develop resistance to a blight. b. develop resistance to insects. c. flower earlier in the season. d. grow faster
A plant compound that may reduce the risk of heart disease and cancer is classified as a(n) ____
a. essential vitamin b. essential nutrient c. phytochemical d. photochemical e. antioxidant
__________ are different forms of the same gene.
Fill in the blank(s) with the appropriate word(s).
Because cell walls consist of a cross -linked network of long filaments embedded in a stiff surrounding material , they can be called ______
a -spongy bone b -spot-welded sheets c -plasma membranes d -fiber composites