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Unit 4 PreAP Bio Review

Total questions: 46

Worksheet time: 2hrs 8mins

Name
Class
Date
1.

This enzyme is capable of breaking Hydrogen bonds found between the bases of DNA

a)

Topoisomerase

b)

DNA Helicase

c)

DNA Polymerase

d)

Exonuclease

2.
What is the purpose of DNA replication?
a)
Cut the DNA 
b)
Make more cells
c)
Apoptosis
d)
Duplicate the DNA
3.
What do we call DNA replication since new DNA has 1 parent strand and 1 new strand?
a)
Conservative 
b)
Semiconservative 
c)
Dispersive
4.
What is the backbone of DNA made of?
a)
Nitrogen bases
b)
Amino acids
c)
Double H
d)
Sugar & Phosphate
5.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
6.
Which sequence of DNA bases would pair with this partial strand
CAT TCA CTG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
7.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
8.
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
9.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
10.
Which of the following is not a nitrogen base found in DNA?
a)
Thymine
b)
Uracil 
c)
Guanine
d)
Adenine
11.

Which part of the DNA molecule makes up the "rungs" or middle of the DNA helicase

a)

Phosphate group

b)

Nitrogen base

c)

deoxyribose

d)

ribose

12.
Where does transcription take place?
a)
at a ribosome
b)
in the nucleus
c)
at a mitochondria
d)
at a lysosome
13.
If a DNA strand reads ATT CGT CTA, what would the mRNA strand read?
a)
TAA GCA GAT
b)
CGA TGA GUT
c)
UAA GCA GAU
d)
TAA GCA GUT
14.
Which of the following statements is true?
a)
DNA is single-stranded
b)
RNA is single-stranded
c)
DNA contains uracil
d)
RNA contains deoxyribose
15.
What is the product of translation?
a)
DNA
b)
mRNA
c)
tRNA
d)
proteins
16.

What combines together to make a protein?

a)

Amino Acid

b)

RNA

c)

Ribosome

d)

DNA

17.

What organelle is the site of translation?

a)

Nucleus

b)

Ribosome

c)

Mitochondria

d)

Chloroplast

18.

What is the order for Protein Synthesis?

a)

Transcription -> Translation -> Protein

b)

Translation - > Transcription -> Protein

c)

Protein -> Transcription -> Translation

d)

Translation -> Protein -> Transcription

19.
Which type of RNA takes the instructions from the nucleus to the cytoplasm?
a)
mRNA
b)
tRNA
c)
rRNA
d)
RNA polymerase
20.
What is the product of transcription?
a)
DNA
b)
mRNA
c)
tRNA
d)
proteins
21.
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA
a)
Met-Pro-Ala-Val
b)
Met-Pro-Val
c)
Tyr-Gly-His
d)
Tyr-Gly-Arg-His
22.
Identify the phase:
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
23.
Identify the phase.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
24.
After meiosis II the daughter cells will contain ____ chromosomes if the original cell contained 78.
a)
78
b)
39
c)
23
d)
46
25.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
26.

This type of asexual reproduction has the offspring growing off of the parent.

a)

Budding

b)

Regeneration

c)

Runner

d)

Binary Fission

27.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
28.
What kind of cells are made in MEIOSIS?
a)
Haploid Gametes
b)
Diploid Somatic Cells
c)
Skin Cells
d)
Liver Cells
29.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
30.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
31.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
32.
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
33.
Which best describes the process shown?
a)
mutation in which the DNA content of the gene is ltered
b)
segregation of sister chromatids
c)
condensation and segregation of the alleles
d)
crossing-over which alleles are exchanged
34.
Which of the following best explains why the chromosome number is an even number in organisms?
a)
It is only by coincidence, many organisms have an odd number
b)
The diploid number is always even so that when mitosis occurs each cell gets the same number of chromosmes
c)
The diploid chromosome number represents pairs of chromosomes, one from ech parent, so that it is always an even number
d)
Chromosomes double very time the cell divides, so after the first division, the number is always even
35.

Which answer includes the dominant homozygous genotype?

a)

AA

b)

Aa

c)

aa

36.

Which answer contains the heterozygous genotype?

a)

AA

b)

aa

c)

Aa

37.

What is the definition of an allele?

a)

An allele is a variety of a gene.

b)

An allele is the genetic makeup of an organism

c)

An allele is another word for a gene.

38.

In cats, the allele for stripes (S) is dominant over the allele for no stripes (s). Two heterozygous cats are bred. If the female cat has a litter of 8, predict how many kittens will have no stripes.

a)

2

b)

6

c)

4

d)

8

39.

In guinea pigs, the allele for short hair (H) is dominant and the allele for long hair (h) is recessive. When a dominant homozygous male and a heterozygous female are bred together, what is the predicted phenotypic ratio for the offspring?

a)

1:1 short hair to long hair

b)

All have short hair

c)

1:3 short hair to long hair

d)

1:3 long hair to short hair

40.
This type of inheritance pattern is a MIXTURE of both traits, like the old theory of blending
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
41.
This type of inheritance pattern shows BOTH traits in possible offspring:
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
Indomitable 
42.
A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?
a)
4: Orange and White
b)
1: Orange : 1 White
c)
2 Orange: 2 Orange and White: 0 White
d)
1: Orange: 2 Orange and White: 1 White
43.
Looking at this pedigree, how many family members have the disease?
a)
4
b)
7
c)
All
d)
None
44.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXB
b)
XbXb
c)
XbY
d)
XBY
45.
Hemophilia is a recessive x-linked disorder. According to the Punnett square, what percentage of offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
46.

The genotypes of the couple in the 3rd generation

a)

must be AA x AA

b)

must be Aa x Aa

c)

must be Aa x aa

d)

must be aa x aa

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