Xanthophyll pigments __________
A. prevent formation of reactive oxygen
species
B. absorb light energy
C. convert light energy into heat
D. reflect yellow light
E. All answer options are correct.
E
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Answer the following statements true (T) or false (F)
1. Photons from light can boost an electron to a higher energy state. 2. Harnessing light and splitting water occurs in both photosystem I and II. 3. The Calvin cycle is only capable of fixing carbon dioxide in the dark. 4. In hot and arid environments, plants that maximize photorespiration produce the most sugars.
Coenzyme Q (also known as ubiquinone or CoQ) is often found in lotions and moisturizers. Given
what you know about its role in cellular respiration, infer what it might be doing in these products.
a. It helps glycolysis proceed faster in the cytosol of skin cells. b. It absorbs dangerous free radicals (loose electrons) that can cause aging. c. It decreases the rate of metabolism and slows cellular growth. d. It is absorbed and used by cells with a high metabolism. e. It causes older cells to spontaneously die and regenerates new cells.
Which of the following traits is determined by programmed transposition?
A) Pattern baldness in humans B) Mating types in yeast C) Eye color in Drosophila D) All of these E) None of these
Define the term broad-sense heritability (H2). What is implied by a relatively high value of H2? Express aspects of broad-sense heritability in equation form
What will be an ideal response?