Quiz about Category 2 Practice

Question 1

Which of the following best describes a DNA molecule?

Accepted Answer

double helix

Answer

contains ribose

Answer

made of amino acids

Answer

contains Uracil

Question 2

Which of the following units are repeatedly joined together to form a strand of DNA?

Accepted Answer

nucleotides

Answer

amino acids

Answer

fatty acids

Answer

polysaccharides

Question 3

Nitrogenous bases are joined by which type of bond?

Accepted Answer

hydrogen bonds

Answer

polar bonds

Answer

ionic bonds

Answer

covalent bonds

Question 4

DNA and RNA are macromolecules in the category of

Accepted Answer

Nucleic Acids

Answer

Proteins

Answer

Lipids

Answer

Carbohydrates

Question 5

Which of the following is a base that is NOT contained in DNA?

Accepted Answer

Uracil

Answer

Adenine

Answer

Thymine

Answer

Guanine

Question 6

Franklin used x-ray crystallography to determine the shape of the DNA molecule is

Accepted Answer

a twisted ladder

Answer

a cloverleaf

Answer

a braided rope

Answer

a pleated sheet

Question 7

Chargraff's Rule says that

Accepted Answer

C pairs with G

Accepted Answer

T pairs with A

Answer

A pairs with C

Answer

G pairs with T

Question 8

What is the outcome of DNA transcription and translation?

Accepted Answer

Make protein

Answer

Make muscles

Answer

Make cells

Answer

Make DNA

Question 9

What is true of RNA? (select all that apply)

Accepted Answer

Single Strand

Accepted Answer

Contains uracil

Accepted Answer

Ribose Sugar

Answer

Deoxyribose Sugar

Question 10

What is the mRNA for the following DNA strand?

TAC GTA

Accepted Answer

AUG CAU

Answer

GCT AGC

Answer

ATG CAT

Question 11

What type of mutation is this?

Accepted Answer

Substitution/Point

Answer

Frameshift

Question 12

Genes carry our ______.

Accepted Answer

traits

Answer

jeans

Answer

codon

Answer

rna

Question 13

Webbed fingers (F) are dominant over nonwebbed fingers (f). If parent A (Ff) and parent B (Ff) have children, which of the following are true? Select all that apply

Accepted Answer

Phenotypes: 75% chance of having webbed fingers and 25% chance of not.

Accepted Answer

Genotypes: FF 25%, Ff 50%, ff 25%

Answer

Phenotypes: 100% chance of having webbed fingers and 0% chance of not.

Answer

Phenotypes: 25% chance of having webbed fingers and 75% chance of not

Answer

Genotypes: FF 75%, Ff 50%, ff 25%

Question 14

G = green, g = yellow
The genotype for a yellow plant is...

Accepted Answer

gg

Answer

GG

Answer

Gg

Answer

all of the choices result in yellow

Question 15

Which of the following would complete this Punnett Square?

Accepted Answer

aa

Answer

AA

Answer

Aa

Question 16

Which of the following genotypes is heterozygous?

Accepted Answer

Bb

Answer

BB

Answer

bb

Answer

B

Question 17

Which of the following genotypes is homozygous dominant?

Accepted Answer

AA

Answer

A

Answer

Aa

Answer

aa

Question 18

Dominant alleles are represented by a:

Accepted Answer

capital letter

Answer

Male gene

Answer

lowercase letter

Answer

recessive trait

Question 19

What is the genotype that should be in the blank square?

Accepted Answer

yyRr

Answer

YYRR

Answer

yyrr

Answer

YrYr

Question 20

What goes in box 3

Accepted Answer

Aabb

Answer

AABB

Answer

AAbb

Answer

aaBb

Question 21

What goes in box 15

Accepted Answer

aabb

Answer

AABB

Answer

aaBB

Answer

AAbb

Question 22

How many codons: AAU GCG AUG

Accepted Answer

3

Answer

9

Answer

1

Answer

15

Question 23

Which Seq could be found in RNA?

Accepted Answer

AUGCUU

Answer

ACCTGT

Answer

CGCATT

Question 24

The codon CCU codes for what amino acid?

Accepted Answer

Proline

Answer

Isoleucine

Answer

Stop

Answer

Methionine

Question 25

Which of the following best describes a DNA molecule?

Accepted Answer

double helix

Answer

contains ribose

Answer

made of amino acids

Answer

contains Uracil

Question 26

Adenine bonds with ______________.

Accepted Answer

Thymine

Answer

Guanine

Answer

Cytosine

Answer

Adenine

Question 27

Guanine bonds with ______________.

Accepted Answer

Cytosine

Answer

Adenine

Answer

Guanine

Answer

Thymine

Question 28

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 29

DNA is considered a universal genetic code. Which statements are true of the genetic code? Pick THREE correct sentences.

Accepted Answer

The components that make up the genetic code are common among all living organisms.

Accepted Answer

The genetic code uses the four nucleotide bases: adenine, guanine, cytosine, and thymine.

Accepted Answer

Amino acid sequences on the genetic code can be determined by the arrangement of the codons.

Answer

The order of nucleotide sequences of the genetic code is the same for all living organisms.

Answer

Proteins are assembled from a four letter codon that specifies what amino acids are needed.

Question 30

Delray has dimples and his wife does not. Delray has a homozygous dominant genotype for dimples, and his wife has a homozygous recessive genotype for no dimples.

If Delray and his wife decide to have children, then which Punnett square correctly shows the probability of them having a child with dimples?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 31

Which statement best explains the color and texture change of the leaves?

Accepted Answer

Environmental conditions influence the expression of genetic traits

Answer

Plants shrink when they do not get sunlight

Answer

Plants can grow without sunlight.

Answer

Environmental conditions do not alter a plant's characteristics.

Question 32

What are the nucleotides made of?

Accepted Answer

Sugar, Phosphate, nitrogen base

Answer

Phosphate, Adenine, nitrogen base

Answer

Thymine, Adenine, Cytomine

Answer

Phosphate, Nitrogen, Adenine

Question 33

Adenine bonds with ______________.

Accepted Answer

Thymine

Answer

Guanine

Answer

Cytosine

Answer

Adenine

Question 34

Guanine bonds with ______________.

Accepted Answer

Cytosine

Answer

Adenine

Answer

Guanine

Answer

Thymine

Question 35

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 36

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

Accepted Answer

deoxyribose (sugar) and phosphate

Answer

deoxyribose and adenine

Answer

deoxyribose and a hydrogen bond

Answer

sugar and the nucleus

Question 37

The two strands of nitrogenous bases in DNA are joined by which type of bond?

Accepted Answer

hydrogen bonds

Answer

polar bonds

Answer

ionic bonds

Answer

covalent bonds

Question 38

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

Accepted Answer

the order (sequence) of the nitrogen bases

Answer

the shape (structure) of the nitrogen bases

Answer

the color of the nitrogen bases

Answer

the frequency (number) of nitrogen bases

Question 39

When going from DNA to mRNA, this process is called?

Accepted Answer

Transcription

Answer

Translation

Answer

Replication

Question 40

When going from mRNA to Amino Acids, this process is called?

Accepted Answer

Translation

Answer

Transcription

Answer

Replication

Question 41

What is the process to code for protein?

Accepted Answer

DNA --> mRNA --> Protein

Answer

mRNA--> DNA--Protein

Answer

Protein-->DNA-->mRNA

Answer

DNA--> Protein -m-RNA

Question 42

UUACUACG could be the code for?

Accepted Answer

mRNA

Answer

DNA

Answer

Protein

Question 43

What scientific process is being shown?

Accepted Answer

Crossing over

Answer

Mixing

Answer

Crossing under

Answer

square dancing

Question 44

During which of the following stages are the chromosomes aligned at the midpoint of the nuclei?

Accepted Answer

metaphase

Answer

anaphase

Answer

telophase

Answer

prophase

Question 45

Name the phase:

Accepted Answer

Anaphase

Answer

Telophase

Answer

Metaphase

Answer

Prophase

Question 46

What is the end product of meiosis?

Accepted Answer

4 haploid cells.

Answer

2 diploid cells.

Answer

2 haploid cells.

Answer

4 diploid cells.

Question 47

What process results in the division of 1 cell into 2 identical daughter cells?

Accepted Answer

Mitosis

Answer

Meiosis

Answer

G1

Answer

Cross-Over

Question 48

What is the correct order of the stages of Mitosis?

Accepted Answer

Prophase, Metaphase, Anaphase, Telophase.

Answer

Telophase, Anaphase, Metaphase, Prophase

Answer

Prophase, Telophase, Metaphase, Anaphase.

Answer

Anaphase, Metaphase, Prophase, Telophase.

Question 49

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

Accepted Answer

S

Answer

G1

Answer

G2

Answer

M

Question 50

A mutation is defined as:

Accepted Answer

A change in the DNA sequence

Answer

A change in the cell's structure

Answer

Anything that changes in an embryo

Answer

Any change in the physical features of a human

Question 51

Why are insertion and deletion (frameshift) mutations so harmful?

Accepted Answer

They change all of the codons from the mutation on down the line, which changes the amino acid sequence

Answer

They insert things that an organism doesn't need.

Answer

They often delete things that organisms need.

Answer

Insertion and deletions are not any more harmful than substitution mutations.

Question 52

Which type of mutation does the model demonstrate?

Accepted Answer

Insertion

Answer

Deletion

Answer

Substitution

Answer

Translocation

Question 53

DNA is considered a "universal" molecule, which allows scientists to insert genes from one animal into another, this is made possible because...

Accepted Answer

all organisms have the same components or nucleotides of DNA

Answer

DNA, is not universal, it is in fact radically different between species.

Answer

all organisms have a nucleus which stores DNA

Answer

all organisms have the same sequence of nucleotides of DNA

Question 54

DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.

Accepted Answer

Deletion

Answer

Substitution

Answer

Insertion

Answer

Inversion

Question 55

Normal-
AGA-TTC-ATA-GCG
Mutant-
AGA-TTC-AAT-AGC-G

Accepted Answer

insertion frameshift

Answer

deletion frameshift

Answer

substitution

Answer

nonsense

Question 56

What type of chromosomal mutation is this?

Accepted Answer

Inversion

Answer

Translocation

Answer

Deletion

Answer

Duplication

Question 57

A mutation in which only one nucleotide is altered is called a:

Accepted Answer

Point Mutation

Answer

Frameshift Mutation

Answer

Deletion Mutation

Answer

Insertion Mutation

Question 58

Genetic mutations can be...

Accepted Answer

beneficial, harmful, or neutral

Answer

beneficial only

Answer

harmful only

Answer

neutral only

Question 59

What is a Gene?

Accepted Answer

A segment of DNA that encodes for a protein

Answer

A segment of RNA that encodes for a protein

Answer

A chromosome

Answer

Your genome

Question 60

A change in a gene, group of genes or chromosome that results in a change in the proteins

Accepted Answer

Mutations

Answer

Replication

Answer

Translation

Answer

Transcription

Question 61

A molecule of DNA is a polymer composed of _____________.

Accepted Answer

nucleotides

Answer

glucose

Answer

amino acids

Answer

fatty acids

Question 62

Where in the cell does DNA replication occur?

Accepted Answer

nucleus

Answer

ribosome

Answer

cytoplasm

Answer

vacuole

Question 63

The arctic fox inhabits northern area of North America. The same arctic fox is shown in the drawing during different times of the year.

What causes this change in the fur color?

Accepted Answer

gene expression for fur color is regulated by temperature

Answer

the genes for fur color change as the arctic fox grows older

Answer

gene expression for fur color is regulated by magic

Answer

the arctic fox has two traits for fur color that are determined at birth

Question 64

The structure X is a ________.

Accepted Answer

ribosome

Answer

nucleus

Answer

tRNA

Answer

DNA

Category 2 Practice

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