Which of the following initially traps solar energy in the process of photosynthesis?
A) water
B) chlorophyll
C) triose phosphate
D) NADP+
E) ATP
B) chlorophyll
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Which of these tests is an in vivo test?
A. PCR B. Agglutination test C. Western Blot D. Tuberculin test
When one plant is shaded by another, why is the ratio of far-red to red light increased compared to an unshaded plant?
A. Phytochrome in the taller plant absorbs most of the red light. B. Auxin absorbs mostly far-red light. C. As light passes through the leaves of the taller plant, most of the red light is absorbed by chlorophyll. D. Far-red light mostly reflects off the surface of the soil while red light is mostly absorbed. E. Shade is enriched in far-red wavelengths of light.
Potassium has one electron in its fourth shell, and chlorine has seven electrons in its third shell. Which of the following is most likely to be true?
A) The two atoms will share the electron unequally in a polar covalent bond. B) The two atoms will share an electron equally in a nonpolar covalent bond. C) Chlorine will give an electron to potassium to form an ionic bond. D) Potassium will give an electron to chlorine to form an ionic bond.
Many bacteria facilitate the uptake of iron by secreting low molecular weight molecules, called ________, to form complexes with the iron that can then be readily transported into the cell.
Fill in the blank(s) with the appropriate word(s).