Pre-DNA

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

Which of the following is a base pair?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine

The weak bonds between base pairs is a ___

• Covalent Bond

• Polar Bond

• Non Polar Bond

• Hydrogen

DNA is a polymer made of:

• Nucleotides
• Ribosomes
• Purines
• Pyrimidines

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• ribosome
• nucleus

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

What will the matching sequence be on a strand that reads AAGCTAT?

• AACGATA
• TTCGTTA
• CCTGATA
• TTCGATA

DNA codes for...

• bases
• proteins
• amino acids
• phosphates

Name this structure

• double helix

• nucelotide

• twisted ladder

• hydrogen bond