Which of the following is a possible location for a bacterial adhesion?

A) fimbriae, flagella, and pili
B) pili
C) flagella
D) fimbriae


Ans: A) fimbriae, flagella, and pili

Biology & Microbiology

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Match each mechanism of horizontal gene transfer with its definition:

A. Transduction i. DNA transfer between two linked bacterial cells B. Transformation ii. bacteria picks up environmental DNA C. Conjugation iii. gene transfer via a bacteriophage

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If both parents are "carriers" due to the presence of one copy of the Tay-Sachs allele, what are the odds that they would have a normal child?

a. 0 b. 25% c. 50% d. 75% e. 100%

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DNA replication occurs in the 5' to 3' direction; that is, new nucleoside triphosphates are added to the 3' end

Indicate whether the statement is true or false

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The epithelial lining of the small intestine is modified for what function?

A. protection B. absorption C. secretion D. removing debris E. excretion

Biology & Microbiology