DNA Structure

What makes up the SIDES of a DNA ladder?

• nitrogen bases

• sugars & phosphates

• genes & chromosomes

• RNA

What makes up the rungs (MIDDLE) of a DNA ladder?

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Tags

NGSS.HS-LS1-1

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

What is the complement to the DNA strand below:
5'-TCCCAA-3'

type in Capital Letters

Answer explanation

complimentary strand of DNA is the "other side" of the DNA that matches with the bases they gave you!

Think:

A --> T

C --> G

What is the significance of the sequence (order) of the Nitrogen Bases in DNA?

• The order of the Nitrogen Bases determines the number of chromosomes present in an organism.
• The order of the Nitrogen Bases determines the traits that an organism will possess (have).
• The order of the Nitrogen Bases determines the gender of an organism.
• The order of the Nitrogen Bases determines whether an organism is abiotic biotic.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Assume that you have straight hair and your sibling has curly hair. What accounts for this difference?

• You have DNA and your sibling does not.
• Your sequence of nitrogen bases is different than your sibling.

• Your sibling has a weave. 
• Your sibling has a genetic mutation. 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1