Unit 4 Concept 1 DNA

What does DNA stand for?

• Deoxyribonucleic Acid

• Diribonucleic Acid

• Deoxynucleic Acid

• Dinitrogenic Acid

Why is DNA important?

• It makes the human body healthy and strong.

• It gives living things energy to stay alive.

• It creates the new living things.

• It serves as the blueprint for traits of all living things.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The nitrogen base GUANINE will always pair with CYTOSINE. Which rule states this?

• Cricket's Rule

• The President's Rule

• Chargaff's Rule

• Rosalind's Rule

Which nitrogen base pairs with ADENINE in RNA?

• Uracil

• Thymine

• Cytosine

• Guanine

___ combine repeatedly to form the DNA and RNA molecule.

• Nucleotides

• Nitrogen bases

• Amino acids

• Sugar phosphates

Differentiate DNA from RNA.

• RNA is single stranded; DNA is double stranded

• RNA is found in nucleus; DNA is found everywhere in the cell

• DNA contains ribose; RNA contains Deoxyribose

• RNA's bases are A-T, G-C; DNA's bases are U-A, C-G

What does this picture represent?

• Amino acid

• DNA molecule

• Nucleotide

• Base pairing

In DNA replication, DNA "unwinds" to form two template strands: the leading strand and the lagging strand.

Which of the following statements about these strands is true?

• The leading strand of DNA is synthesized continuously.

• DNA polymerase can only synthesize DNA on the leading strand.

• Okazaki fragments are used to synthesize the leading strand of DNA.

• The lagging strand can only be synthesized once the leading strand has been completed.

A template strand of DNA is 3′ TAGGCATTGCA 5′.

What is the complementary DNA strand that is created from this template during replication?

• 5′ TGCAATGCCTA 3′

• 5′ TAGGCATTGCA 3′

• 5′ AUCCGUAACGU 3′

• 5′ ATCCGTAACGT 3′

There are several enzymes involved in DNA replication.

Which of the following correctly pairs the DNA replication enzyme with its function?

• Helicase seals gaps between DNA fragments.

• DNA polymerase I opens up the DNA at the replication fork.

• DNA primase extends primers by adding nucleotides to the 3′ end.

• SSB Proteins work ahead of the replication fork to prevent the DNA from rejoining.