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
D
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What will be an ideal response?
The feature of carbon important for producing a diversity of organic molecules is
A. carbon can form up to 2 covalent bonds with other elements. B. carbon bonds are stronger than any other bond. C. carbon can form both polar and nonpolar covalent bonds with various elements. D. carbon bonds cannot be broken in the range of temperatures associated with life. E. carbon can form hydrogen bonds with water.
Which portion of a phospholipid is hydrophilic?
a. fatty acid tails b. glycerol heads c. The entire phospholipid is hydrophilic. d. None of the phospholipid is hydrophilic.
Experiments that are done outside a living cell are described by the Latin term
A) in vino. B) in vito. C) in vivo. D) in vitro.