How many possibilities are there for a short nucleic acid sequence of six nucleotides?
A. 24
B. 64
C. 1,296
D. 4,096
E. 64,000,000
Answer: D
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The human finger contains ____ joints
a. hinge b. fulcrum c. ball-and-socket d. lever e. ligament
Mycobacteria secrete a waxy coating that makes this disease difficult to treat using antibiotics:
A. Whooping cough B. Cholera C. Lyme disease D. Impetigo E. Tuberculosis
In meiosis, chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during
a)prophase I. b)prophase II. c)interphase II. d)metaphase I. e)metaphase II.
Which type of membrane transport is most important for nutrient acquisition in nutrient poor environments?
A. Simple diffusion B. Active transport C. Facilitated diffusion through membrane carrier proteins D. Facilitated diffusion through channel proteins