Quiz about DNA STRUCTURE, REPLICATION AND MUTATIONS

Question 1

Which of the following is NOT a base found in DNA?

Accepted Answer

Glycogen

Answer

Adenine

Answer

Thymine

Answer

Cytosine

Question 2

Which sequence of DNA bases would pair with this partial strand?
ATG TGA CAG

Accepted Answer

TAC ACT GTC

Answer

ATG TGA CAG

Answer

GTA AGT GAC

Answer

CAT TCA CTG

Question 3

Adenine forms hydrogen bonds with which base?

Accepted Answer

Thymine

Answer

Guanine

Answer

Cytosine

Answer

Adenine

Question 4

Guanine forms hydrogen bonds with which base?

Accepted Answer

Cytosine

Answer

Adenine

Answer

Guanine

Answer

Thymine

Question 5

Which enzyme unzips the DNA to prepare for replication?

Accepted Answer

Helicase

Answer

DNA Polymerase

Answer

Ligase

Answer

Primase

Question 6

Which enzyme is responsible for adding nucleotides?

Accepted Answer

DNA Polymerase

Answer

Single-stranded binding proteins

Answer

Ligase

Answer

Primase

Question 7

Which enzyme is responsible linking together newly created strands of DNA using the Okazaki fragments?

Accepted Answer

Ligase

Answer

Single-stranded binding proteins

Answer

DNA Polymerase

Answer

Primase

Question 8

A process in which DNA makes an exact copy of itself is called...

Accepted Answer

Replication

Answer

Translation

Answer

Transcription

Answer

Copying

Question 9

Nitrogenous bases are joined by which type of bond?

Accepted Answer

Hydrogen bonds

Answer

Polar bonds

Answer

Ionic bonds

Answer

Covalent bonds

Question 10

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

Accepted Answer

Thymine

Answer

Cytosine

Answer

Guanine

Answer

Uracil

Question 11

When DNA replication is complete, which is true about the products?

Accepted Answer

Each one has one new strand and one original strand

Answer

Each one has two original strands

Answer

Each one has two new strands

Answer

One has two new strands and the other with two original strands

Question 12

After analyzing a sample of DNA, a scientist recorded the data shown in the table. What percentage of the DNA sample is cytosine?

Accepted Answer

28%

Answer

22%

Answer

25%

Answer

56%

Question 13

Which of the following correctly states Chargaff's Rule (base pairing rule)?

Accepted Answer

A=T, C=G, A+T+C+G=100%

Answer

A=C, T=G, A+T+C+G=50%

Answer

A=T, C=G, A+T+C+G=200%

Answer

A=C, T=G, A+T+C+G=100%

Question 14

What type of chromosomal mutation has occurred?

Accepted Answer

Deletion

Answer

Substitution

Answer

Insertion

Answer

Nondisjunction

Question 15

DNA is an example of which type of macromolecule?

Accepted Answer

Nucleic Acid

Answer

Protein

Answer

Lipid

Answer

Carbohydrate

Question 16

Why is DNA important?

Accepted Answer

it serves as the blueprint for traits of all living things

Answer

it is very small and very complicated

Answer

it's in everything

Answer

because we eat it every day for energy

Question 17

What does DNA stand for?

Accepted Answer

Deoxyribonucleic acid

Answer

Denitrogenous acid

Answer

Deribonucleic acid

Answer

Diribonucleic acid

Question 18

What is the shape of DNA?

Accepted Answer

Double helix

Answer

Triple helix

Answer

Flat, bilayer

Answer

Three-pronged rigid ladder

Question 19

Which organelle is DNA usually found in?

Accepted Answer

nucleus

Answer

cell membrane

Answer

vacuole

Answer

ribosome

Question 20

A monomer of DNA is called a(n)

Accepted Answer

Nucleotide

Answer

Monosaccharide

Answer

Amino Acid

Answer

Triglyceride

Question 21

What are the nucleotides made of?

Accepted Answer

Sugar, Phosphate, nitrogenous base

Answer

Phosphate, Adenine, nitrogenous base

Answer

Thymine, Adenine, Cytomine

Answer

Phosphate, Nitrogen, Adenine

Question 22

What is the sugar in the DNA molecule?

Accepted Answer

deoxyribose

Answer

ribose

Answer

glucose

Answer

fructose

Question 23

Which 2 molecules form the sides (backbone) of the DNA ladder?

Accepted Answer

deoxyribose sugar and phosphate

Answer

deoxyribose sugar and adenine

Answer

deoxyribose sugar and a hydrogen bond

Answer

deoxyribose sugar and the nucleus

Question 24

Nitrogenous bases are joined by which type of bond?

Accepted Answer

hydrogen bonds

Answer

polar bonds

Answer

ionic bonds

Answer

covalent bonds

Question 25

order of replication

Accepted Answer

3, 4, 1, 2

Answer

3, 2, 1, 4

Answer

2, 1, 4, 3

Answer

2, 3, 1, 4

Question 26

Name this structure

Accepted Answer

nucelotide

Answer

covalent bond

Answer

deoxyribose

Answer

hydrogen bond

Question 27

DNA polymerase is a(n)

Accepted Answer

enzyme

Answer

lipid

Answer

sugar

Answer

starch

Question 28

Which of the following would result in a frameshift mutation?

Accepted Answer

Insertions and Deletions

Answer

Insertions only

Answer

Substitution only

Answer

Deletion only

Question 29

ATTTGAGCC- Original
ATTGAGCC - Mutated
The example above is an example of a

Accepted Answer

Deletion -Frameshift

Answer

Insertion- Frameshift

Answer

Deletion- Substitution

Answer

All of the above

Question 30

Which of the following is not a Mutagenic factor(causes mutations).

Accepted Answer

Drinking water

Answer

X-rays

Answer

Chemicals we smoke or eat

Answer

Tanning

Question 31

If you are missing or have an extra base at the end of your mutated DNA . What type of mutation occurred?

Accepted Answer

Frameshift

Answer

Substitution

Answer

Duplication

Answer

Insertion

Question 32

DNA molecule segment is : TTACGCAAG

The mutated DNA segment is TTCCGCAAG. This is an example of ___ mutation.

Accepted Answer

Substitution

Answer

Deletion

Answer

Insertion

Answer

Inversion

Question 33

A five-carbon sugar found in DNA.

Accepted Answer

deoxyribose

Answer

ribose

Answer

guanine

Answer

helicase

Question 34

What are the 4 nitrogenous bases in DNA?

Accepted Answer

adenine, thymine cytosine, and guanine

Answer

adenine, thymine, cytoplasm, and guanine

Answer

adenine, thymine, cytosine, and gylcerol

Answer

adenine, thymine, cytosine, and glucose

Question 35

Which pairing below is correct?

Accepted Answer

cytosine-guanine

Answer

thymine-cytosine

Answer

cytosine-adenine

Answer

adenine-guanine

Question 36

Tightly wound DNA is called a

Accepted Answer

chromosome

Answer

chromatin

Answer

centromere

Answer

protein

Question 37

The nucleotides in one strand of DNA are joined or conncted by :

Accepted Answer

Covalent bonds

Answer

Hydrogen bonds

Answer

Peptide bonds

Answer

Ionic bonds

Question 38

Which enzyme lays down small sections of RNA in order to conduct DNA replication?

Accepted Answer

Primase

Answer

Helicase

Answer

DNA Polymerase

Answer

Ligase

Question 39

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

Accepted Answer

S

Answer

G1

Answer

G2

Answer

M

Question 40

Any change in the sequence of DNA is...

Accepted Answer

Mutation

Answer

Transgenic shift

Answer

Single Genotype

Answer

Evolution

Question 41

A mutation can sometimes be helpful. If a mutation helps a creature survive in its environment, the mutation could be passed on to future generations, repeatedly over many year. This is how new species evolve.

Accepted Answer

True!

Answer

No way! / False

Question 42

Which of the following represents the structure of DNA?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 43

Deletion

Accepted Answer

a base or segment has been deleted

Answer

a different base or pair takes the place of what should have there

Answer

a base or segment is added to the strand

Question 44

insertion

Accepted Answer

a base or segment is added to the strand

Answer

a different base or pair takes the place of what should have there

Answer

a base or segment has been deleted

Question 45

The picture above represents

Accepted Answer

substitution

Answer

insertion

Answer

deletion

DNA STRUCTURE, REPLICATION AND MUTATIONS

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