Small hairlike structures on the surface of bacteria are called:a

capsids.
b. pili.
c. chromatids.
d. plasmids.
e. virons.


B

Biology & Microbiology

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Cells may need to respond to changes that occur rapidly in their environment. Which of the following is the most rapid response that cells can use to change the activities of gene products?

A. covalent modification of proteins B. alter the transcription levels of genes C. change the rate of protein transport D. modify the chromatin structure around genes

Biology & Microbiology

A clinical laboratory that identifies the bacterial agents that cause human disease would refer to Bergey's Manual of ________ Bacteriology for guidance in identification.

A. Classical B. Evolutionary C. Systematic D. Determinative

Biology & Microbiology

In the familial form of retinoblastoma, individuals who inherit one mutant allele of the RB1 gene have an 85% chance

of developing retinoblastoma and other cancers. Explain why, when these individuals carry only one copy of the mutant gene, there is such a high incidence of cancer in these RB1 heterozygotes. What will be an ideal response?

Biology & Microbiology

Biofilms provide pathogens with an adhesion mechanism and aid in resistance to antimicrobial agents

Indicate whether the statement is true or false

Biology & Microbiology