Chemicals of Life 2

A polymer:

• Is made up of multiple subunits or 'monomers'

• is use to determine if someone is telling the truth.

• is an atom.

• is a nucleotide

Tags

NGSS.HS-LS1-6

DNA contains (select all)

• Proteins

• Genes

• RNA

• Nucleic Acids

• A code in its bases

The two strands of the DNA double helix are connected by the dotted lines between the bases in the picture. What are these dotted lines representing?

• Covalent Bonds

• Hydrogen Bonds

• Genes

• Zipper

Why are the weak hydrogen bonds that hold the two strands of the DNA double helix together important to the function of DNA, particularly at the TATA box?

• They hold information

• They allow the DNA to be easily unwound and read.

• They make the DNA stronger.

• They make the DNA a polymer

The 5' carbon of the Deoxyribose nucleotide connects to:

• the nitrogenous base

• the phosphate group

• the sugar - phosphate backbone

How does DNA hold information? (select the best answer)

• In the sequence of nitrogenous bases

• In the 'genes'

• In the proteins

• In the deoxyribose sugar sequence.

What do Guanine nucleotides pair with in the DNA double helix?

• Adenosine

• Cytosine

• Guanine

• Thiamine

Use the diagram of DNA to predict which of the following base sequences might be harder to unzip (*Hint: look at the hydrogen bonds)

• GCGGCTACGGC

• TCATATCGATAC

As nucleotides polymerize to form DNA, we say that there is a 5' to 3' connection. What is lost from the 3' part of this connection?

• Two phosphate groups

• A hydroxyl group (OH)

• A hydrogen

• A nitrogenous base

As nucleotides polymerize to form DNA, we say that there is a 5' to 3' connection. For the new nucleotide being added, which 'prime' carbon is attached to the growing polymer?

• The 5' carbon.

• The 3' carbon