Which of the following are correct descriptions of biological oxidation-reduction reactions?
> The compound that loses electrons is oxidized.
> The compound that loses electrons is reduced.
> The compound that gains electrons is oxidized.
> The compound that gains electrons is reduced.
> The compound that loses electrons is oxidized.
> The compound that gains electrons is reduced.
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Osmosis occurs as water can cross the lipid bilayer through specialized channels for water movement called ________________
A. proteins B. transmembrane carbohydrates C. membrane pores D. aquaporins
Which of the following are consequences of Arctic ice melting due to global warming?
a. arctic animals are losing suitable habitat b. polar bears are in poorer condition and their weight has decreased over the last 30 years c. more solar radiation is being absorbed by the ocean d. the temperature is increasing in the Arctic at an accelerated rate e. all of the above
It is a fact that enzymes are highly specific and will only catalyze one or a few reactions. Can you
think of a benefit that is derived from such specificity? (i.e. What would happen if most biochemical reactions were catalyzed by the same enzyme?) What will be an ideal response?
The effects of the activation of protein kinase do not include:a
alteration of membrane permeability. b. activation of adenylyl cyclase. c. activation of gene expression. d. phosphorylation of the target protein. e. alteration of cellular metabolism.