Facilitated diffusion is similar to simple diffusion because:
A) each requires the use of energy.
B) in both, materials move down their concentration gradient.
C) each utilizes vesicles to move material around the cell.
D) each requires a protein channel for movement to occur.
Answer: B
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Teeth aren’t exactly bones, but they’re made up of similar tissues and are subject to the same problems bones may have. In what way(s) do you predict the disease rickets might affect teeth?
_____ Periodontal disease: Redness and swelling elicited by bacterial infection of the gums. _____ Delayed formation: The baby teeth may not erupt until after one year. When they erupt, they may be smaller than normal. _____ Increased likelihood of cavities: Low vitamin C status prevents sufficient mineralization, allowing infection to establish on the teeth. _____ Canker sores: Painful mouth sores associated with bacteria and/or viruses.
Stretch-sensitive muscle spindles are indicated
by a. A. b. B. c. C. d. D. e. none of these
Vascular spasm, formation of a platelet plug, and coagulation are the three stages of ________
Fill in the blank(s) with correct word
Which of the following types of information would be most useful in an effort to move a DNA fragment from one plasmid vector to another, using molecular cloning techniques?
A. Data from cloning of Dolly the sheep B. DNA fingerprint data C. Restriction maps of the plasmids D. Sequence of PCR primers