Intro to DNA Replication

Multiple Choice

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

Multiple Choice

Nitrogenous bases are joined by which type of bond?

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

Multiple Choice

Which DNA base pair is connected by three hydrogen bonds?

• Adenine-Thymine

• Cytosine-Guanine

• Adenine-Guanine

• Thymine-Cytosine

Multiple Choice

Why is DNA replication considered fundamental to heredity?

• Because it ensures genetic information is passed to the next generation

• Because it creates new proteins directly

• Because it determines eye color only

• Because it only occurs in plants

Multiple Choice

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Multiple Choice

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

• cytosine
• guanine
• thymine
• uracil

Open Ended

Why is the complementary relationship between DNA bases important for genetic fidelity?

Multiple Choice

DNA replication is __________.

• Ligase

• Helicase

• Semiconservative

• Conservative

Multiple Choice

What does it mean for DNA replication to be semi-conservative?

• -1 old and 1 new

  -The result is that there is 1 new identical DNA molecule

• -2 old and 3 new

  -The result is that there is 1 new identical DNA molecule

• -4 old and 4 new

  -The result is that there is 1 new identical DNA molecule

• -3 old and 2 new

  -The result is that there is 1 new identical DNA molecule

Fill in the Blanks

Fill in the blank: During DNA replication, each new strand is synthesized using the

strand as a template.

Multiple Select

Which of the following are stages of DNA replication?

• Initiation

• Elongation

• Termination

• Translation

Multiple Choice

What are the 3 steps of DNA Replication?

• -double stranded

  -it is a double helix

  -a polymer made of small, repeating monomers (nucleotides)

• 1. Enzymes unzip/unwind DNA double helix

  2. Single free nucleotides floating in the nucleus pair with open strands of A, T, C, and G

  3. Two, complete identical DNA molecules are formed

• Adenine (A)

  Guanine (G)

  Cytosine (C )

  Thymine (T)

• There are not 3 steps of DNA Replication

Multiple Choice

What is the main function of DNA helicase during DNA replication?

• Synthesizing new DNA strands

• Separating DNA strands

• Adding RNA primers

• Repairing DNA damage

Open Ended

Explain the role of DNA primase in the process of DNA replication.

Multiple Choice

What is the role of Polymerase?

• Polymerase has no role in DNA

• Unzip/Unwinds the DNA double helix

• Joins individual nucleotides to make DNA

• Fixes, glues, or repairs DNA fragments to complete strands

Multiple Choice

What is the role of Ligase?

• Joins individual nucleotides to make DNA

• Fixes, glues, or repairs DNA fragments to complete strands

• Ligase has no role in DNA replication

• Unzip/Unwinds the DNA double helix

Multiple Choice

What enzymes are involved in DNA Replication?

• -Helicase

  -Polymerase 

  -DNA

• -Helicase

  -DNA

  -Ligase

• -DNA

  -Polymerase 

  -Ligase

• -Helicase

  -Polymerase 

  -Ligase

Multiple Choice

Which enzyme is primarily responsible for synthesizing new DNA strands during DNA replication?

• DNA Polymerase

• DNA Ligase

• DNA Helicase

• RNA Primase

Open Ended

DNA is responsible for passing on hereditary information from one generation to the next. What is one thing you learned today about how DNA accomplishes this?

Multiple Choice

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

Multiple Select

What happens during DNA replication?

Select all correct answers.

• DNA is copied

• mRNA is made

• Base-pairing rules are utilized

• DNA leaves the nucleus

• The 2 DNA strands are separated

Multiple Choice

Before DNA can replicate it has to...

• Separate the two strands
• Find 4 new strands
• Ask its mom

Multiple Choice

How is the lagging strand synthesized?

• Continuously

• Discontinuously

• Semi-continuously

• Not synthesized

Multiple Choice

How is the leading strand synthesized?

• Continuously

• Discontinuously

• Semi-continuously

• Not synthesized

Multiple Choice

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

• 5'-TACGGTA-3'
• 3'-TACGGTA-5'
• 3'-ATGGCAT-5'
• 5'-ATGGCAT-3'

Multiple Choice

order of replication

• 3, 2, 1, 4
• 2, 1, 4, 3
• 2, 3, 1, 4
• 3, 4, 1, 2