Biology B DNA Structure and Replication

What type of biomolecule is DNA?

• Protein

• Nucleic Acid

• Carbohydrate

• Lipid

A nucleotide is composed of

• A phosphate, sugar and nitrogenous base

• A protein, protein and Guanine

• A phosphate, Adenine, and nitrogenous base

• A protein, Adenine and nitrogenous base

Label the nucleotide

a

b

c

Nitrogenous base

Phosphate

Sugar

DNA is found within the _____________ of a cell.

• mitochondria

• nucleus

• endoplasmic reticulum

• vacuole

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The backbone of DNA is made of...

• base pairs

• sugars and phosphates

• only sugars

• only phosphates

Tags

NGSS.HS-LS1-1

The shape of DNA is called...

• Helix

• Double Helix

• Nucleic Acid

• Ribose

The two strands of DNA are held together with

• covalent bonds

• hydrogen bonds

• nothing

Where does Transcription take place?

• Inside the nucleus

• Inside the cytoplasm

• Inside the Ribosome

• Inside the Rough ER

Put the steps of protein synthesis in order.

• The ribosome reads the mRNA and creates a protein.

• mRNA leaves the nucleus.

• mRNA binds to a ribosome.

• DNA in the nucleus is copied. mRNA is created.

Tags

NGSS.HS-LS1-1

Which of the following is a base pair?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine