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Worksheets

3rd 9 Weeks Review

Total questions: 173

Worksheet time: 3hrs 32mins

Name
Class
Date
1.

Which part of the DNA is responsible for the direct coding of specific traits in an organism?

a)

the # of hydrogen bonds

b)

the # of carbons in the DNA

c)

the sequence of nucleotide bases in the DNA molecule

d)

the sequence of phosphates along each DNA strand

2.

What strand of DNA matches

a)
b)
c)
d)
3.

How is information for a certain protein carried on the DNA?

a)

As a sequence of nucleotides

b)

In the double-helix shape of the condensed chromosome

c)

In the ratio of adenines to thymines

d)

As a pattern of phosphates and sugars

4.

Which of these models of a DNA strand shows bases that are complementary to the DNA model above?

a)
b)
c)
d)
5.

What does the arrow indicate on the DNA model?

a)

The bond between adjacent phosphate and deoxyribose molecules

b)

The junction of introns and exons in the sense strand of DNA

c)

The hydrogen bond between complementary nucleotides

d)

The junction of a codon and a DNA triplet

6.

What is the following molecule called?

a)

Nucleotide

b)

Nucleoside

c)

ATP

d)

ADP

7.

3' AGGTCAGGT 5'

a)

5' AGGTCAGGT 3'

b)

5' ACCTCUGGT 3'

c)

5' TGGACTGGA 3'

d)

5' TCCAGTCCA 3'

8.

What process is shown in the picture?

a)

Photosynthesis

b)

Transcription

c)

DNA replication

d)

Cell Transport

9.

What occurs during DNA replication?

a)

The DNA is copied into RNA

b)

The DNA makes an exact copy of itself

c)

The DNA is converted to a protein

d)

The DNA is converted to lipids

10.

Adenine (A) bonds with ______________.

a)

Guanine (G)

b)

Thymine (T)

c)

Cytosine (C)

d)

Adenine (A)

11.

If we think of DNA as a ladder, which parts are the steps of the ladder?

a)

the nitrogen base pairs

b)

the phosphate-sugar backbone

c)

the genes

12.

Which part of the DNA is responsible for the direct coding of specific traits in an organism?

a)

the # of hydrogen bonds

b)

the # of carbons in the DNA

c)

the sequence of nucleotide bases in the DNA molecule

d)

the sequence of phosphates along each DNA strand

13.

What strand of DNA matches

a)
b)
c)
d)
14.

How is information for a certain protein carried on the DNA?

a)

As a sequence of nucleotides

b)

In the double-helix shape of the condensed chromosome

c)

In the ratio of adenines to thymines

d)

As a pattern of phosphates and sugars

15.

Which of these models of a DNA strand shows bases that are complementary to the DNA model above?

a)
b)
c)
d)
16.

What does the arrow indicate on the DNA model?

a)

The bond between adjacent phosphate and deoxyribose molecules

b)

The junction of introns and exons in the sense strand of DNA

c)

The hydrogen bond between complementary nucleotides

d)

The junction of a codon and a DNA triplet

17.

What is the following molecule called?

a)

Nucleotide

b)

Nucleoside

c)

ATP

d)

ADP

18.

3' AGGTCAGGT 5'

a)

5' AGGTCAGGT 3'

b)

5' ACCTCUGGT 3'

c)

5' TGGACTGGA 3'

d)

5' TCCAGTCCA 3'

19.

What process is shown in the picture?

a)

Photosynthesis

b)

Transcription

c)

DNA replication

d)

Cell Transport

20.

What occurs during DNA replication?

a)

The DNA is copied into RNA

b)

The DNA makes an exact copy of itself

c)

The DNA is converted to a protein

d)

The DNA is converted to lipids

21.

Adenine (A) bonds with ______________.

a)

Guanine (G)

b)

Thymine (T)

c)

Cytosine (C)

d)

Adenine (A)

22.

If we think of DNA as a ladder, which parts are the steps of the ladder?

a)

the nitrogen base pairs

b)

the phosphate-sugar backbone

c)

the genes

23.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
24.

Which organelle is DNA usually found in?

a)

cell membrane

b)

vacuole

c)

chloroplast

d)

nucleus

25.
Which shows the correct complementary base pairing for DNA?
a)
C-A, T-G
b)
A-G, C-T
c)
C-G, U-A
d)
T-A, G-C
26.
The building block of nucleic acids are nucleotides.  Nucleotides are composed of a sugar, a phosphate group, and a _________________ base.
a)
oxygen
b)
hydrogen
c)
nitrogen
d)
carbon
27.
The drawing shows the structure of what molecule?
a)
A DNA molecule
b)
A lipid molecule
c)
A carbohydrate molecule
d)
A protein molecule
28.

Guanine (G) bonds with ______________.

a)

Adenine (A)

b)

Guanine (G)

c)

Cytosine (C)

d)

Thymine (T)

29.
Which 2 molecules forms the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
sugar and the nucleus
d)
deoxyribose (sugar) and phosphate
30.
When DNA makes a copy of itself, the new strands are identical or different?
a)
identical
b)
different
31.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
32.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
33.
What is responsible for holding the two strands of the DNA double helix together?
a)
hydrogen bonds
b)
alleles
c)
London dispersion forces
d)
deoxyribose sugars
34.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
35.
This scientist is known for his/her work in crystallography (x-ray diffraction) and how it helped shape the structure of DNA.
a)
Franklin
b)
Wilkins
c)
Hershey
d)
Chase
36.
This scientist is known for his 'rules' regarding DNA base pairing.
a)
Chargaff
b)
Darwin
c)
Avery
d)
Pasteur
37.

Which 2 scientists are most famous for winning the Nobel prize for confirming the 3D structure and DNA?

a)

Watson & Crick

b)

Watson & Franklin

c)

Crick & Wilkins

d)

Wilkins & Franklin

38.
These two scientists developed the first model of DNA.
a)
Hershey and Chase
b)
Franklin and Wilkins
c)
Watson and Crick
d)
Davis and Lee
39.
Who is responsible for producing this image?
a)
Francis Crick
b)
James Watson
c)
Rosalind Franklin
d)
Watson and Crick
40.
What did Erwin Chargaff conclude from his experiments?
a)
Nitrogen bases are held together by peptide bonds
b)
A and T, C and G always occur in equal amounts
c)
Proteins are the carriers of genetic information
d)
C and G rarely occur in eukaryotic organisms
41.
From his work with mice and pneumonia-causing bacteria, Frederick Griffith discovered what?
a)
Replication
b)
Transcription
c)
Transformation
d)
Translation
42.
By using radioactive isotopes, Hershey and Chase were able to conclude that _____ is the carrier of genetic information.
a)
DNA
b)
Protein
c)
Carbohydrate
d)
Lipid
43.
The work of scientists including Griffin, Avery, Hershey & Chase, and Franklin helped us to determine that _______ are responsible for carrying genetic material.
a)
Amino Acids
b)
Proteins
c)
Nucleic Acids
d)
Carbohydrates
44.
Who was responsible for the model shown?
a)
Oswald Avery
b)
Watson and Crick
c)
Erwin Chargaff
d)
Rosalind Franklin
45.
Hershey and Chase set out to determine what molecule served as the unit of inheritance. They completed a series of experiments in which E. coli was infected by a T2 virus. Which molecular component of the T2 virus actually ended up inside the cell?
a)
protein
b)
RNA
c)
ribosome
d)
DNA
46.

Marshall Nirenberg and Heinrich Matthaei discovered that base pairs align in a _______________ code which is a blue print for the production of proteins.

a)

single

b)

double

c)

triplet

47.

After the human genome was sequenced scientists determined that most mammals share the ________________ sets of genes.

a)

same

b)

different

48.
What is the difference between the sugars found in DNA and RNA?
a)
RNA contains glucose
b)
RNA contains sucrose
c)
RNA contains deoxyribose
d)
RNA contains Ribose
49.
RNA has how many strands?
a)
one
b)
two
50.
DNA and RNA belong to the biomolecule class of 
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
51.

RNA stands for

a)

robot nucleic acid

b)

root nucleic acid

c)

ribonucleic acid

d)

nucleic acid

52.

The nitrogen base pairs for RNA are

a)

A-T C-G

b)

A-U C-G

c)

A-C T-G

d)

T -U G-C

53.

The sugar in the backbone of ribonucleic acid is

a)

deoxyribose

b)

ribose

c)

dextrose

d)

sucrose

54.
One difference between DNA and RNA is that....
a)
Only RNA has the base Uracil
b)
only RNA contains the base Thymine
c)
only RNA contains the base Cytocine
d)
only RNA contained the base Guanine
55.
Which of these bases does not exist in RNA?
a)
C
b)
T
c)
U
d)
A
56.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
57.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
58.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
59.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
60.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
61.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
62.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
63.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
64.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
65.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
66.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
67.
Replicate the following strand of DNA: 
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
68.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
69.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
70.
order of replication
a)
3, 2, 1, 4
b)
2, 1, 4, 3
c)
2, 3, 1, 4
d)
3, 4, 1, 2
71.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
72.
What is the correct complimentary strand for the following DNA?ATCGAG
a)
TACGAG
b)
ATCGAG
c)
TAGCTG
d)
TAGCTC
73.
The drawing shows the structure of what molecule?
a)
A DNA molecule
b)
A lipid molecule
c)
A carbohydrate molecule
d)
A protein molecule
74.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
75.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
76.
In mitosis, the end product is...
a)
2 haploid cells
b)
2 diploid cells
c)
4 haploid cells
d)
4 diploid cells
77.
The daughter cells in mitosis are...
a)
Identical
b)
Unique
78.
In meiosis, the end product is...
a)
2 haploid cells
b)
2 diploid cells
c)
4 haploid cells
d)
4 diploid cells
79.
The cells produced in meiosis are...
a)
Identical
b)
Unique
80.
Sperm and Egg cells are produced using which process?
a)
Mitosis
b)
Meiosis
c)
Binary Fission
d)
None of these
81.
If an organism has a diploid (2n) number of 6, what is its haploid (n) number?
a)
2
b)
3
c)
6
d)
12
82.
If a cell has a haploid (n) number of 10, what is the diploid (2n) number?
a)
5
b)
10
c)
20
d)
25
83.
This phase of mitosis lines the chromosomes in the middle of the cell.
a)
Anaphase
b)
Prophase
c)
Metaphase
d)
Telophase
84.
What phase of mitosis is shown here?
a)
Cytokinesis
b)
Interphase
c)
Anaphase
d)
Metaphase
85.
What phase of mitosis is shown here?
a)
Cytokinesis
b)
Anaphase
c)
Telophase
d)
Prophase
86.
In mitosis, the two resulting cells are...
a)
Different from the starting cell and identical to each other.
b)
Different from the starting cell and different from each other.
c)
Identical to the starting cell and different from each other.
d)
Identical to the starting cell and identical to each other.
87.
In meiosis, the haploid number of chromosomes in a human sex cell (egg or sperm) is:
a)
46
b)
92
c)
30
d)
23
88.
What is the diploid number of cells found in a human body cell?
a)
23
b)
46
c)
92
d)
47
89.
Another name for a sex cell is a:
a)
Gamete
b)
Embryo
c)
Somatic cell
d)
Muscle cell
90.
What phase of mitosis is shown here?
a)
Anaphase
b)
Cytokinesis
c)
Telophase
d)
Metaphase
91.
This picture shows which process? 
a)
mitosis
b)
meiosis
c)
the cell cycle
92.
Meiosis occurs in _____ cells.
a)
somatic
b)
sex
c)
body
93.
What is the function of mitosis?
a)
genetic diversity though sexual reproduction
b)
cell reproduction and general growth and repair
94.
The sea star will regenerate an arm if needed.  What cellular process is directly responsible for this regeneration?
a)
meiosis
b)
transpiration
c)
mitosis
d)
respiration
95.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2 
96.
What part of our cells holds our DNA?
a)
cytoplasm
b)
cell membrane
c)
nucleus
d)
ribosomes
97.
Meiosis creates how many cells?
a)
1
b)
2
c)
3
d)
4
98.
At the end of mitosis, how many identical cells will you have?
a)
1
b)
2
c)
3
d)
4
99.
After meiosis is complete, the new cells:
a)
are all identical
b)
are all different
c)
are half identical and half different
d)
are all stretched out
100.
The process on the left is:
The process on the right is:
a)
Left: meiosis
Right: meiosis
b)
Left: meiosis
Right: cloning
c)
Left: mitosis
Right: meiosis
d)
Left: mitosis
Right: mitosis
101.
What is the first phase of Mitosis?
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
102.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
103.
Put the following stages of mitosis in order: anaphase, prophase, metaphase, and telophase. 
a)
prophase, metaphase, telophase, anaphase
b)
prophase, anaphase, metaphase, telophase
c)
prophase, metaphase, anaphase, telophase
d)
prophase, telophase, metaphase, anaphase
104.

In the following structure, the circled item is a

a)

chromosome

b)

chromatid

c)

centromere

d)

chromatin

105.
Structure (b) is a ____.
a)
chromosome
b)
chromatid
c)
centromere
106.
Humans have how may chromosomes ?
a)
112
b)
46
c)
8
d)
67
107.
a)
Anaphase
b)
Cytonkinesis
c)
Interphase
d)
Prophase
108.
a)
Cytokinesis
b)
Anaphase
c)
Telophase
d)
Prophase
109.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
110.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
111.
Cells that have only one chromosome from each pair
a)
meiosis
b)
haploid
c)
homologous
d)
diploid
112.
What phase is  shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
113.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
114.
The nuclear membrane dissolves during
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
115.
What phase is shown here?
a)
Prophase II
b)
Metaphase I
c)
Metaphase II
d)
Anaphase I
116.
What phase is shown here?
a)
Metaphase II
b)
Telophase I
c)
Telophase II
d)
Metaphase I
117.
What phases is shown here?
a)
Prophase II
b)
Prophase I
c)
Anaphase II
d)
Interphase I
118.
What phase is shown here?
a)
Anaphase I
b)
Prophase I
c)
Metaphase II
d)
 Metaphase I
119.
What phase is shown here?
a)
Telophase II
b)
Anaphase II
c)
Metaphase I
d)
Interphase I
120.
What phase is shown here?
a)
Telophase I
b)
Metaphase II
c)
Telophase II
d)
Anaphase I
121.
What phase is this?
a)
Interphase II
b)
Prophase I
c)
Metaphase I
d)
Anaphase II
122.

What part of the cell disappears during Prophase and reappears in Telophase?

a)

nuclear membrane

b)

cell membrane

c)

chromosomes

123.

Homologous pairs line up in the middle of the cell in what phase of Meiosis?

a)

Metaphase I

b)

Metaphase II

c)

Mitosis

d)

Prophase II

124.

What are homologous chromosomes?

a)

Pairs of chromosomes with different genes on each.

b)

Pairs of chromosomes with the same genes on each.

c)

Pairs of chromosomes with no genes.

d)

Pairs of chromosomes with the wrong genes on each.

125.
When homologous chromosomes match up, they form a structure call a ___________.
a)
tetrad (pair of chromosomes, one from mom and one from dad)
b)
triad
c)
diploid
d)
quad (group of 4 replicated chromosomes, 2 from mom and 2 from dad)
126.

Why is the Cell Cycle often represented as a circle?

a)

Because it is easy to draw

b)

Because cell cycles has a distinct beginning and end point

c)

to highlight the checkpoints

d)

to show that it repeats over and over

127.

In which part of Interphase are the chromosomes replicated?

a)

G0

b)

G1

c)

S

d)

G2

128.

Spinal cord injuries are difficult to treat because damaged nerce cells do not regenerate. Which of the following most accurately explains why damaged nerve cells no longer regenerate?

a)

Mature nerve cells are in a resting state; the no longer divide during mitosis

b)

Nerve damage disrupts the cell cycle at the G1 phase

c)

Nerve damage disrupts the cell cycle at the S phase

d)

Nerve damage prevents centrioles from being synthesized

129.

During which stage of the cell cycle does the nucleus divide?

a)

interphase

b)

mitosis

c)

endocytosis

d)

cytokinesis

130.

Which statement below desribes the events during G2 of Interphase?

a)

The cell grows, develops, and makes new proteins

b)

The DNA replicates to form a new set of identical chromosomes

c)

The cell grows, makes new organelles, and prepares for mitosis

d)

the nucleolus disappears and the nuclear envelope disintegrates

131.

Which stage of the cell cycle is MOST critical for ensuring that daughter cells are identical?

a)

G1

b)

S

c)

Prophase

d)

G2

132.

Which is not a phase of the cell cycle?

a)

Interphase

b)

Mitosis

c)

Cytokinesis

d)

Duplication

133.

Select all stages of interphase?

a)

G1

b)

S

c)

G2

d)

Mitosis

134.

In which stage of the cell cycle does the cell split into two?

a)

Mitosis

b)

G1

c)

Cytokinesis

d)

S

135.

_____ is the uncontrolled growth of cells, often resulting in a tumor or mass of abnormal cells

a)

Cancer

b)

Apoptosis

c)

Radiation

136.

Apoptosis is

a)

programmed cell death

b)

mysterious cell death

c)

programmed cellular mutation

d)

mysterious cellular mutation

137.

If you look at a cell under a microscope, which phase is it MOST likely to be in?

a)

Cytokinesis

b)

M phase

c)

Interphase

d)

G1 Phase

138.
Put the following actions in order: DNA replicates, cell grows, cell divides, cell prepares for mitosis. 
a)
DNA replicates, cell grows, cell prepares for mitosis, cell divides
b)
cell grows, cell prepares for mitosis, DNA replicates, cell divides
c)
cell grows, DNA replicates, cell prepares for mitosis, cell divides
d)
DNA replicates, cell prepares for mitosis, cell grows, cell divides
139.
What is a series of events a cell goes through as they grow and divide?
a)
Cell Division
b)
Cell Cycle
c)
Cytokinesis
d)
Mitosis
140.
What is the longest stage of the cell cycle called?
a)
Cytokinesis
b)
M phase
c)
Interphase
d)
G1 Phase
141.
During what stage does the G1, S and G2 phases happen?
a)
Interphase
b)
M phase
c)
Mitosis
d)
Cytokinesis
142.

After which stage of the cell cycle does cytokinesis occur?

a)

Interphase

b)

S phase

c)

M phase

d)

G1 phase

143.

During what phase of the cell cycle is DNA replicated?

a)

G1 phase

b)

S phase

c)

G2 phase

d)

M phase

144.
During what phase of the cell cycle does cell division occur?
a)
Interphase
b)
M phase
c)
S phase
d)
G2 phase
145.
During what phase of the cell cycle does the cell grow?
a)
G1 phase
b)
S phase
c)
M phase
d)
Cytokinesis
146.
During what phase of the cell cycle does the cell prepare for mitosis?
a)
G1 phase
b)
S phase
c)
G2 phase
d)
M phase
147.
Put the following stages of the cell cycle in order: G2, S, G1, M. 
a)
G1, S, G2, M
b)
S, G1, G2, M
c)
G1, M, G2, S
d)
M, G1, S, G2
148.
Put the following in order: G2, G1, S, mitosis, cytokinesis. 
a)
G1, G2, S, Mitosis, cytokinesis
b)
G1, S, G2, Mitosis, cytokinesis
c)
G1, G2, S, cytokinesis, mitosis
d)
G1, S, G2, cytokinesis, mitosis
149.
Why would it be important to replicate DNA before a cell divides in mitosis or meiosis?
a)
In order for genetic information to be transferred into daughter cells.
b)
In order for the cell to be able to increase in size.
c)
In order for the DNA to be contained in the nucleus.
d)
In order for the cell to re-order the DNA sequencing in the new cells.
150.

The three stages of the cell cycle are __________, mitosis, and

cytokinesis.

a)

interphase

b)

anaphase

c)

metaphase

d)

prophase

151.

A pair of similar chromosomes are called:

a)

homocycular

b)

homologous

c)

homocellular

d)

homonucleus

152.
During which part of the cell cycle is DNA copied?
a)
Mitosis
b)
Cytokinesis
c)
S phase
153.

All human have _________ chromosomes

a)

23

b)

46

c)

Diploid

d)

Haploid

154.
A dog has 78 chromosomes in its body cells.  What is the diploid number?
a)
78
b)
39
c)
1
d)
100
155.
A Goat has 60 chromosomes in its body cells.  What is the haploid number?
a)
60
b)
30
c)
100
d)
120
156.
A human has 46 chromosomes in their body cells.  What is the haploid number?
a)
46
b)
92
c)
23
d)
12
157.
Mitosis produces cells with haploid or diploid number of chromosomes?
a)
Haploid
b)
Diploid
158.
Body cells have diploid or haploid number of chromosomes?
a)
Haploid
b)
Diploid
159.
If the Diploid number of Carrots is 18, the haploid number is
a)
18
b)
9
c)
27
d)
36
160.
The individual strands on duplicated chromosomes are called_____________
a)
Centromeres
b)
daughters
c)
Chromatids
d)
Karyotypes
161.
The ___________ holds the replicated sister chromatids together.
a)
centriole
b)
chromosomes
c)
centromere
d)
cycles
162.
The structure labeled A is a(n)
a)
chromatid
b)
centriole
c)
centromere
d)
chromophere
163.
The structures labeled B are
a)
centrioles
b)
chromatids
c)
centromeres
d)
chromopheres
164.
Autosomes are
a)
chromosomes found in autotrophs, only
b)
chromosomes that automatically correct all errors in the DNA
c)
chromosomes that determine traits other than sex
d)
chromosomes that determine the sex of the individual
165.

Each chromosome contains two identical _____.

a)

chromotids

b)

chromosomes

c)

first

d)

meiosis

e)

second

166.

A _________ is DNA tightly coiled around proteins.

a)

gene

b)

chromosome

c)

trait

d)

mutation

167.

Chromosomes that are paired by size and content are called _______ chromosomes.

a)

homeostasis

b)

homologous

c)

matching

d)

sister

168.

Cells that contain 2 sets of chromosomes are called _________ (2n).

a)

diploid

b)

haploid

c)

triploid

d)

polyploid

169.

Cells that contain only ONE set of chromosomes are called ________ (n).

a)

diploid

b)

polyploid

c)

triploid

d)

haploid

170.

The 23rd pair of chromosomes that do determine the sex of an individual are called ___________.

a)

sex chromosomes

b)

autosomes

c)

homologous

d)

genes

171.

The 2 female sex chromosomes are ___.

a)

XY

b)

XX

172.

The 2 male sex chromsomes are _____.

a)

XY

b)

XX

173.

A photo of the chromosomes in a dividing cell that are arranged by size is called a _________.

a)

mutation

b)

gene

c)

picture

d)

karyotype

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