Explain the basis for how the three groups of macroalgae are divided, and name the main pigment(s) characteristic to each group
What will be an ideal response?
Algae are divided into three groups based on their color. The color of the different groups of algae derives from the photosynthetic pigments of these algae. Red algae contain the red accessory pigment phycoerythrin; brown algae contain fucoxanthin; and green algae contain chlorophylls a and b, which are not masked by accessory pigments.
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Light enters the eye’s interior through the
__________, an adjustable opening in the center of the muscular, doughnut-shaped iris. Fill in the blank(s) with the appropriate word(s).
Which of the following factors could be important in determining a species' fundamental niche? Check all that apply.
A. presence of a predator/parasite B. soil type C. seasonal temperatures D. salinity E. presence of a commensalist
The function of chymotrypsin is to:
A) synthesize proteins. B) break down proteins into amino acids. C) synthesize glycogen. D) break down glycogen into glucose.
Consider the structure of thymine, shown on the left in Figure 2.3 above, and compare to the structure of pyrimidine X on the right. What would be the impact if X is incorporated into the structure of a DNA strand in place of thymine?
What will be an ideal response?