In an experiment in the laboratory, a small colored molecule is injected into one cell. Within minutes, the molecule has entered the adjacent cells. What type of junctions connect these cells?
A. tight junctions
B. gap junctions
C. free junctions
D. actin junctions
E. adhesion junctions
Answer: B
Biology & Microbiology
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A stigma is a:
A) light-sensing organelle. B) primitive mouth. C) thickened membrane. D) type of plastid.
Biology & Microbiology
In what ways is sample size related to statistical testing?
What will be an ideal response?
Biology & Microbiology
In the accompanying figure, what would structure A be made up as a gram-negative bacterium?
a. cellulose b. plasmids c. spirochetes d. peptidoglycan e. monosaccharides
Biology & Microbiology
Researchers are developing a ribozyme that cleaves the HIV genome. This pharmaceutical agent could be described as
A) an RNA molecule capable of catalysis. B) a hydrolase. C) a genetic transposable element. D) a protease inhibitor. E) a competitive inhibitor for reverse transcriptase.
Biology & Microbiology