DNA Replication and Protein Synthesis

In humans, where does DNA replication take place?

• cytoplasm

• nucleus

• ribosome

• vacuole

RNA from a bear is compared to RNA from a sunflower. Both will contain...

• Deoxyribose sugar and Thymine

• Deoxyribose and Uracil

• Ribose and Thymine

• Ribose and Uracil

Purines have big bases. The purines are...

• Adenine and Guanine

• Adenine and Thymine

• Adenine and Cytosine

• Cytosine and Guanine

Pyrimidines have small bases. The pyrimidines are...

• Thymine and Cytosine

• Thymine and Adenine

• Thymine and Guanine

• Adenine and Guanine

A DNA molecule could contain the following molecules:

• Deoxyribose, Cytosine, and a lipid.

• Deoxyribose, Thymine, and a phosphate.

• Ribose, Uracil, and a polypeptide

• Ribose, Adenine, and Thymine

Tags

NGSS.HS-LS3-1

Nitrogen bases are held together by...

• strong covalent bonds.

• weak hydrogen bonds.

• peptide bonds.

Sugars and phosphates are held together by...

• strong covalent bonds.

• weak hydrogen bonds.

• peptide bonds.

In nucleotides, the letters A, T, C, G, or U represent...

• phosphate groups

• deoxyribose sugars

• nitrogen bases

• ribose sugars

Which statement best describes DNA replication?

• DNA opens up and RNA copies it.

• DNA opens up and completely unwinds to make two new molecules.

• DNA opens up and each strand is used as a template for making a new strand.

• RNA opens up the DNA and uses each strand as a template for a new strand.

The model of DNA replication in which one original strand is used as a template to make a new strand so that the new DNA has one old and one new strand is called ____.

• Dispersive Model

• Semi-conservative Model

• Conservative Model