Apurinic sites (AP sites) involve a spontaneous loss of a(n)________ in an intact double-helix DNA molecule

Fill in the blank(s) with correct word


purine

Biology & Microbiology

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Of the following organisms, which one is among the Aggregatibacter aphrophilus, Aggregati-bacter actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella spp. (HACEK) group of organisms that cause slowly progressive bacterial endocarditis?

a. Capnocytophaga gingivalis b. Sphingomonas paucimobilis c. E. corrodens d. A. actinomycetemcomitans

Biology & Microbiology

Chromatids that are attached at the centromere are called ______ chromatids

a. mother b. daughter c. preprogrammed d. sister e. duplicated

Biology & Microbiology

_____, which probably evolved from infoldings of the plasma membrane, first appear in the fossil record about 1.8

million years ago.

a. Eukaryotes b. Archaea

c. Plants d. Bacteria e. Photosynthesizers

Biology & Microbiology

If a cell's lysosomes burst, the cell would ________

A) shrivel B) divide into two cells C) digest itself D) need to manufacture more lysosomes

Biology & Microbiology