In prokaryotes, DNA replication begins at a single site that is rich in AT nucleotide sequence, where two strands unwind and separate. This ATP dependent process catalyzed by a protein

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#Question id: 585

#Unit 1. Molecules and their Interaction Relevant to Biology

In an enzyme reaction involving one enzyme and one substrate, the rate of the reaction depends on

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#Question id: 33911

#Unit 2. Cellular Organization

What is the Lk of a 5,000 bp circular duplex DNA molecule after eight enzymatic turnovers by a single molecule of DNA gyrase in the presence of ATP followed by 8 enzymatic turnovers by a single molecule of bacterial type I topoisomerase

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#Question id: 23117

#Unit 2. Cellular Organization

Choose the correct statement of the following  

a. The nucleosome consists of approximately equal masses of DNA and histones (including H1). 

b. The four core histones are present in equal amounts in the cell.

c. H1 is half as abundant as the other histones, which is consistent with the finding that only one molecule of H1 can associate with a nucleosome.

d. One turn around the nucleosome takes 80 bp of DNA

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#Question id: 23156

#Unit 13. Methods in Biology

Most widely used method of detecting specific proteins, uses an antibody to which a fluorescent dye has been covalently attached

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#Question id: 28509

#Unit 5. Developmental Biology

Which factors are expressed In hindlimb bud initiation?