Which of the following is not a feature of a bacterial artificial chromosome (BAC) vector?

A. CEN sequences
B. origin of replication (ori)
C. par genes
D. selectable antibiotic resistance gene
E. cloning site within the ?-galactosidase gene


A

Biology & Microbiology

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Blood is pumped from the heart into the arterial system, which branches from arteries into fine _________.  

A.  arterioles B.  veins C.  capillaries D.  venules

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Synthetic organic compounds such are chlorofluorocarbons (CFCs) are damaging to the world's fresh water supply.

a. true b. false

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A ________ ring is the characteristic feature present in BOTH cephalosporins and penicillins produced by fungi. Semisynthetic versions of these drugs typically ________ this ring structure with other functional groups

a. ?-lactam / add to b. ?-lactam / replace c. lactone / add to d. lactone / replace

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Which element is considered an essential micronutrient for plants?

a. zinc b. potassium c. hydrogen d. arsenic e. platinum

Biology & Microbiology