DNA Structure, Function and Replication Basics

DNA Structure, Function and Replication Basics

Highlights

• DNA carries the iNformation for cellular structure and function

• DNA is the genetic code for making proteins giving you your characteristics

• DNA is found in the Nucleus of Eukaryotes

• DNA is a Nucleic Acid

Multiple Select

DNA carries the information that codes for... Choose 2

• Protein

• Inherited Characteristics

• Transduction

• Abiotic Factors

Multiple Choice

A double stranded helix that holds the code for all the cells in the body.

• RNA

• DNA

• Chromatin

• Nucleus

Multiple Choice

Directs all cell activities through the DNA located there.

• Endomembrane System

• Nucleus

• Ribosomes

• Mitochondria

Multiple Choice

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the genetic information for traits of all living things

• because we eat it every day for energy

Highlights

• DNA is made of monomers called Nucleotides

• Each Nucleotide has a Phosphate, Sugar and Nitrogen Base

• There are 4 Nitrogen Bases - Adenine, Thymine, Cytosine, Guanine

Multiple Select

What are the 4 possible nitrogen bases in DNA?

• Adenine

• Uracil

• Thymine

• Cytosine

• Guanine

Multiple Choice

Which of the following units are repeatedly joined together to form a strand of DNA? (This is the MONOMER of DNA.) 

• amino acids
• nucleotides
• fatty acids
• polysaccharides

Multiple Choice

Label the picture in order:

• phosphate ; sugar ; base

• phosphate ; base ; sugar

• base ; sugar ; phosphate

• base ; phosphate ; sugar

Multiple Choice

Name this structure

• double helix

• nucelotide

• twisted ladder

• hydrogen bond

Highlights

• DNA is Double Stranded and in a Double Helix shape

• The outside of DNA is a phosphate-sugar backbone

• The inside of DNA is the sequence of nitrogen bases that determine the genetic code

• The nitrogen bases ALWAYS pair A=T and C=G

Multiple Select

Which of the following make up a nucleotide? (check all that apply)

• Phosphate

• Fatty Acid

• Deoxyribose Sugar

• Nitrogen Base

Multiple Choice

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.
• The your sequence of nitrogen bases is different than your sibling.
• Your sibling has a weave. 
• Your sibling has a genetic mutation. 

Multiple Select

Which are the correct complementary pairings of nitrogen bases? (choose 2)

• Adenine -- Thymine

• Thymine -- Guanine

• Guanine -- Cytosine

• Cytosine -- Adenine

Highlights

• DNA Replication makes an identical copy of DNA

• DNA polymerase is an enzyme that makes DNA (DNA polymer maker)

• Adenine complements Thymine

• Cytosine complements Guanine

Multiple Choice

Why does DNA replicate?

• To create another copy for the new cell
• To create a duplicate copy in case the original gets damaged
• To create a new copy to replace the damaged original

Multiple Choice

Which enzyme is responsible for adding nucleotides that create the new DNA molecules?

• Topoisomerase

• DNA Polymerase

• Ligase

• Primase

Multiple Choice

Which sequence of DNA bases would pair with this partial strand

CAT TCA CTG

• ATG TGA CAG

• TAC ACT GTC

• GTA AGT GAC

• CAT TCA CTG

When does DNA replication occur?

• DNA is replicated during the Synthesis Phase (S phase) of the cell cycle

• DNA must be replicated before the cell divides in Mitosis to ensure the new cells have DNA

• 
  

• 
  

Multiple Choice

In what phase of the cell cycle does DNA replication take place?

• G1
• S
• G2
• M

Poll

How do you feel about DNA and DNA replication?