The linking number:
A. is negative for most B-form DNAs.
B. changes when double-stranded DNA is bent or deformed.
C. increases when single-stranded breaks occur in the DNA.
D. increases when double-stranded breaks occur in the DNA.
E. is the number of times one strand of a closed circular DNA is wound about another.
E
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Which of the following is/are characteristic of ALL cellular organisms?
A) communication B) evolution C) motility D) communication, evolution, and motility
Which stem variation is fleshy and will grow underground parallel to the soil surface?
a. Bulb b. Tuber c. Cladophore d. Rhizomes e. Stolons
What is the principal substance that causes
phototropism in stems or leaves?
a. auxin b. gibberellin c. abscisic acid d. ethylene e. all of these
Destruction of the motor areas in the left cerebral
cortex results in the loss of a. sensation on the right side of the body. b. sensation on the left side of the body. c. voluntary movement on the left side of the body. d. voluntary movement on the right side of the body. e. involuntary control of the autonomic system.