DNA, RNA and Protein Synthesis

1. The shape of DNA is known as a _______.

• ring

• single helix

• double helix

• chain

1. The entire molecule shown in the diagram to the right is called a(n)

• fatty acid

• amino acid

• nucleotide

• protein

Tags

NGSS.HS-LS1-1

1. The scientists who identified the structure of DNA are ________________.

• Avery and Smith

• Hooke and Leeuwenhoek

• Mendel and Hirsch

• Watson and Crick

Tags

NGSS.HS-LS1-1

The backbone of the DNA "ladder" are composed of ____

• nitrogen bases

• phosphates

• deoxyribose

• deoxyribose sugars and phosphate groups

The rungs (steps) of the DNA "ladder" are composed of ____

• nitrogen bases

• phosphates

• deoxyribose

• deoxyribose sugars and phosphate groups

The two strands of a DNA molecule are held together by _____

• helium bonds

• covalent bonds

• peptide bonds

• hydrogen bonds

The process by which DNA copies itself is called ________________.

• G1 & G2

• translation

• transcription

• replication

In eukaryotic cells where does replication of DNA take place?

• In the cytoplasm

• In the endoplasmic reticulum

• On the ribosome

• In the nucleus

What enzyme is responsible for unzipping the double helix during replication?

• DNA polymerase

• RNA polymerase

• DNA ligase

• DNA Helicase

During replication, the DNA unzips and then free floating are matched by pairing with the parent DNA.

• proteins

• sugars

• phosphates

• nitrogenous bases