Molecular Genetics

Which scientist discovered that the bacteria Streptococcus pneumoniae changed its form?

• Avery

• Chase

• Griffith

• Watson

Which scientist confirmed that DNA is genetic material?

• Hershey

• Chargaff

• Crick

• Levene

Which scientist determined the basic structure of nucleotides that make up DNA?

• Wilkins

• Chargaff

• Watson

• Levene

Which explains how DNA strands fit inside of a cell?

• The double helix shape of DNA greatly reduces its volume.

• The chromatin fibers of DNA are only three molecules thick.

• The average strand is only composed of 50–245 nucleotides.

• DNA strands coil tightly around proteins called histones.

Which is the function of the enzyme DNA polymerase during replication?

• bonds mRNA to original parent strand

• bonds nucleotides to new DNA strand

• unwinds the replicated DNA strand

• winds up the replicated DNA strand

Which is the central dogma of biology?

• DNA codes for RNA, which guides enzyme synthesis.

• DNA codes for RNA, which guides protein synthesis.

• RNA codes for DNA, which guides enzyme synthesis.

• RNA codes for DNA, which guides protein synthesis.

Tags

NGSS.HS-LS1-1

The structure of DNA is described as a ___ formed by two strands of nucleotides.

• double helix

• single spiral

• polymerase chain

• protein molecule

Tags

NGSS.HS-LS1-1

Which are the two main parts that make up a chromosome?

• DNA and protein

• DNA and RNA

• RNA and phosphate

• sugar and phosphate

Which scientists discovered the double helix model of DNA?

• Chargaff and Levene

• Franklin and Wilkins

• Hershey and Chase

• Watson and Crick

What are the small segments synthesized in the lagging strand of DNA?

• ligases

• adenines

• Okazaki fragments

• helixes