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DNA Structure and Replication Quiz AAC 2024

Last updated about 2 hours ago

14 Nsɛmmisa

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1

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1

BIO.7.A

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3

BIO.7.A

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1

BIO.7.A

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4

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1

BIO.7.A

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1

BIO.7.A

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1

BIO.7.A

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1

BIO.6.A

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1

BIO.7.A

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1

BIO.7.A

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1

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Asemmisa {{asɛmmisaAhyɛnsode}}

1.

A part of a DNA nucleotide is shown.
What is missing in the structure of the DNA nucleotide?

Deoxyribose sugar

Hydrogen bond

Amino acid

Nucleic acid

Asemmisa {{asɛmmisaAhyɛnsode}}

2.

What components make up the backbone of the DNA molecule?

Purines and deoxyribose

Phosphate groups and pyrimidines

Pyrimidines and purines

Deoxyribose and phosphate groups

Asemmisa {{asɛmmisaAhyɛnsode}}

3.

What components make up a nucleotide of DNA?
Select THREE correct answers.

Deoxyribose sugar

Protein

Nitrogen base

Phosphate group

Hydrogen bond

Asemmisa {{asɛmmisaAhyɛnsode}}

4.

Humans have thousands of genes that combine in different ways to help create unique individuals. Where is the genetic code primarily located?

Ribose sugars in RNA

Nucleotides in DNA

Exons in RNA

Phosphates in DNA

Asemmisa {{asɛmmisaAhyɛnsode}}

5.

Drag and drop the terms into the diagram to identify the components of DNA.

Mmuae Afoforo a Wobɛpaw:

base pair

phosphate backbone

hydrogen bond

nucleotide

Asemmisa {{asɛmmisaAhyɛnsode}}

6.

Immunoglobulin G (IgG) is a protein secreted by white blood cells in response to specific antigens. What factor most directly determines the amino acids that are combined to create IgG?

The amount of energy that is available in the cell.

The temperature of the cell when translation is taking place.

The sequence of nucleotides in DNA.

The number of chromosomes in a cell.

Asemmisa {{asɛmmisaAhyɛnsode}}

7.

A segment of DNA is shown in the diagram.
Which of these identifies the part of the DNA segment labeled X?

Deoxyribose

Hydrogen bond

Nucleotide

Phosphate group

Asemmisa {{asɛmmisaAhyɛnsode}}

8.

A segment of a DNA strand is shown.
3' A G G T C A G G T 5'
Which of these is the correct complementary DNA strand for the segment shown?

5' A G G T C A G G T 3'

5' T G G A C T G G A 3'

5' T C C A G T C C A 3'

5' A C C U G A G G U 3'

Asemmisa {{asɛmmisaAhyɛnsode}}

9.

A student was listing the steps of DNA replication. Her ideas are listed below, but they are out of order.
I. During S phase, the DNA double helix is unwound by an enzyme
II. Two identical strands of DNA are formed
III. During S phase, an enzyme adds complementary nucleotides to each strand of DNA
IV. The cell enters S phase with one set of DNA
What is the correct order for the steps of DNA replication?

II, IV, I, IV

I, II, III, IV

IV, III, I, II

IV, I, III, II

Asemmisa {{asɛmmisaAhyɛnsode}}

10.

The Miller and Urey experiment simulated conditions thought to be present on early Earth to test the origin of life. Using a closed system of flasks and tubes, water vapor was mixed with a variety of different gases to simulate an atmosphere that did not contain oxygen. The mixture was then exposed to an electrical discharge and allowed to cool. After a period of time, the mixture was analyzed and found to contain trace amino acids. The Miller and Urey experiment is shown.
Which is a significant finding of this experiment regarding the origin of life on Earth?

Organic molecules can form from simple molecules.

DNA can code polypeptide chains for proteins.

Proteins are polymers of amino acids.

DNA molecules contain the genetic code.

Asemmisa {{asɛmmisaAhyɛnsode}}

11.

Specific nitrogen bases will always pair together when a DNA molecule is formed. Because of this, which of the following will always be true of a DNA molecule?

There will be twice as much guanine as there is cytosine.

There will be an equal amount of cytosine and thymine.

There will be an equal amount of adenine and thymine.

There will be twice as much thymine as there is guanine.

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12.

Which of the following diagrams best represents DNA replication?

null

null

null

null

Asemmisa {{asɛmmisaAhyɛnsode}}

13.

The RNA world hypothesis suggests that RNA was the first genetic material to exist before DNA. According to this hypothesis, how did DNA likely originate?

RNA, DNA, and proteins all formed at the same time, each developing independently of one another.

DNA was formed directly from simple molecules in the environment, then became a single-stranded RNA molecule through a series of complex mutations.

RNA molecules had the ability to store genetic information and perform cellular processes like enzymes, and they eventually converted into DNA for more stable genetic storage.

DNA was the first form of genetic material, and RNA evolved later to perform other functions in the cell.

Asemmisa {{asɛmmisaAhyɛnsode}}

14.

Which of the following best describes the functions of DNA helicase and DNA polymerase during DNA replication?

DNA helicase joins fragments of DNA together, while DNA polymerase removes nucleotides from the original strand.

DNA helicase forms the new DNA strand, while DNA polymerase separates the two strands of the double helix.

DNA helicase unwinds the double helix, while DNA polymerase adds new nucleotides to form a complementary strand.

DNA helicase repairs damaged DNA, while DNA polymerase breaks the hydrogen bonds between the DNA strands.