​During ​ (a)   the double-stranded DNA unwinds and " ​ (b)   " along weak ​ (c)   bonds between the nitrogen base pairs.

Free nucleotides (bases) in the nucleus are matched in the ​ (d)   strands of DNA.

• DNA replication
• unzips
• hydrogen
• unwound

After the free nucleotides are matched with the unwound strands of DNA, the new double strands of DNA are?

• A new combination of nucleotides

• An exact duplication of the original DNA

Tags

NGSS.HS-LS3-2

Which is the new strand or copy of the DNA strand?

• Black

• White

Which are parts of the nucleotide?

• Phosphate

• Sugar

• Nitrogen base

• All of these

The function of unzipping the DNA strands to prepare for DNA replication is:

• DNA Helicase

• DNA Polymerase

The proofreader that runs along the strand of DNA and matches nitrogen bases to make the complementary DNA is:

• DNA Helicase

• DNA Polymerase

When remembering the matching Nitrogen bases, a good way of remembering that A=T and C=G is

​ (a)   = Trees

​Collard = ​ (b)  

• Apple
• Greens

What would be the complementary base pairs of the top 3 from top to bottom?

• T-G-A

• A-G-T

• G-C-A

Tags

NGSS.HS-LS1-1

In a DNA molecule, lets say that Guanine is 25% of the nitrogen bases, Cytosine would have to be 25% because they always match each other,

If Adenine was 25%, what would Thymine be?

• 10%

• 25%

• 40%

A DNA strand is composed of 15% Guanine and 30% Adenine. What is the expected percentages of Cytosine and Thymine?

• 25% - 30%

• 15% - 15%

• 30% - 15%

• 15% - 30%