8th Science Mastery_10

When was the structure of DNA established?

• 1950s

• 1940s

• 1960s

When was the structure of DNA established?

• Oswald Avery

• Friedrich Miescher

• Edwin Chargaff

What did the finding of Linus Pauling show in regard to the structure of DNA?

• Single-ring bases must always pair with double-ring bases.

• DNA is a three-tiered chain helix with a sugar-phosphate backbone at the center with bases protruding from the backbone.

• DNA composition varies from species to species.

Which is a type of nitrogenous base?

• adenine, thymine, and phosphate

• adenine, thymine, and guanine

• adenine, guanine, and phosphate

A _____ is made up of the combination of a base, sugar, and phosphate group.

• gene

• nucleotide

• protein

Which base is the complementary pair to guanine?

• cytosine

• thymine

• adenine

In which stage of the cell cycle does DNA replication occur?

• mitosis

• cytokinesis

• interphase

During which basic stage of the cell cycle does the cell duplicate its contents?

• G1

• S

• G2

The entire DNA makeup of an organism is known as a _____.

• genome

• centromere

• helix

Tags

NGSS.HS-LS1-1

What organelle is responsible for making proteins by following the instructions of DNA?

• mitochondria

• ribosome

• nucleus

Tags

NGSS.HS-LS1-1