A molecule that has a positive charge on one side and a negative charge on the other side is called a
a. Nonpolar Molecule
b. Polar Molecule
c. Charged Molecule
d. BIpolar Molecule
Ans: b. Polar Molecule
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Basidiomycetes are the only fungal group capable of synthesizing lignin peroxidase. What advantage does this group of fungi have over other fungi because of this capability?
A) This is always the first group of fungi to begin any kind of plant decomposition. B) This fungal group can break down the tough lignin, which cannot be harnessed for energy, to get to the more useful cellulose. C) This is the only group of fungi that can use lignin for adenosine triphosphate (ATP) production. D) This enzyme releases heat energy from the breakdown of lignin that is used to kill off competing fungi.
Once photons are harvested by the pigment molecules in the light-harvesting complex, where is the energy delivered next?
a. the lumen of the thylakoid b. the outer membrane of the chloroplast c. the reaction center of the photosystem d. the stomata of the leaf
You have a DNA sequence of 1600 bp. To characterize it, you decide to make a restriction map. Cutting with the first enzyme, you show by electrophoresis that the fragments produced are 400 and 1200 bp, respectively
After using the second enzyme, you recover 700-bp and 900-bp fragments. After treatment with both enzymes, fragments were 300, 400, and 900 bp. Which is the correct map? A) -900 ------/400--/3--- B) -400/--900-----/300 --- C) -300-/--400--/--900---- D) -400-/300-/---900----- E) -400-/-100/--300--/900
In the Hershey-Chase experiment,
a. DNA from parent bacteriophages appeared in progeny bacteriophages. b. most of the phage DNA never entered the bacteria. c. more than three-fourths of the phage protein appeared in progeny phages. d. DNA was labeled with radioactive sulfur. e. DNA formed the coat of the bacteriophages.