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Worksheets

Bioscience final 2022

Total questions: 90

Worksheet time: 1hrs 21mins

Name
Class
Date
1.
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
2.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
3.
Cytosine always pairs with
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
4.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
5.
Which of the following units are repeatedly joined together to form a strand of DNA? (This is the MONOMER of DNA.) 
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
6.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
7.
The sugar in DNA is ?
a)
sucrose
b)
glucose
c)
deoxyribose
d)
fructose
8.

A gene is (mark all that apply)

a)

A distinct portion of the somatic cells responsible for increasing hormone concentrations during interphase

b)

A distinct sequence of nucleotides forming part of the chromosome

c)

A unit of heredity transferred from the parents to their offspring

d)

A type of protein

9.

All are functions of proteins, except for ____

a)

Structural - Hair and fingernails

b)

Hormonal - Regulate organ growth and development

c)

Energy - Provide short term energy for cell fermenation

d)

Enzymes - Catalyst for reactions

10.

RNA is different than DNA because ___ (Mark all that apply)

a)

It is a single strand instead of a double helix

b)

It contains Uracil instead of Thymine

c)

It is an nucleic acid instead of an amino acid

d)

It is shorter in length

11.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
12.
A scientist observes a base sequence of AGCTAGCTAGCT.  Which of the following would be the complimentary strand?
a)
TGCATGCATGCA
b)
TCGATCGATCGA
c)
TAGCTAGCTAGC
d)
TTAAGGCCTTCC
13.
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
14.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
15.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
16.
Which enzyme seals okazaki fragments together on the lagging strand?
a)
Topoisomerase
b)
Helicase
c)
Polymerase
d)
Ligase
17.
What is A?
a)
Leading strand
b)
Lagging strand
c)
Okazaki Fragments
d)
DNA plymerase
18.
Small segments of DNA made on the lagging strand are called:
a)
Okazaki Fragments
b)
ERVs
c)
Transposable Elements
d)
Telomeres
19.
If a strand reads:
3' A A A T T T C 5'
The matching strand would read...
a)
5' T T T A A A G 3'
b)
3' T T T A A A G 5'
c)
5' A A A T T T C 3'
d)
3' U U U A A A G 5'
20.

RNA contains a nitrogenous base that is different from DNA. What is the name of the nitrogenous base?

a)

Thymine

b)

Uracil

c)

Adenine

d)

Cytosine

e)

Guanine

21.

What is the process called when DNA is made into mRNA.

a)

translation

b)

transcription

c)

transcribe

d)

translate

22.

What type of RNA moves to the ribosome to start protein synthesis?

a)

tRNA

b)

mRNA

c)

rRNA

d)

nRNA

23.

What does tRNA stand for?

a)

transition RNA

b)

transcription RNA

c)

transfer RNA

d)

translation RNA

24.

Which macromolecule is made up of amino acids?

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

25.

mRNA is read into amino acids during what process?

a)

transcription

b)

transfer

c)

translation

d)

transition

26.

What enzyme transcribes DNA into mRNA?

a)

DNA polymerase

b)

RNA polymerase

c)

helicase

d)

rRNA

27.

What makes up a codon?

a)

2 amino acids

b)

3 amino acids

c)

2 nucleotides

d)

3 nucleotides

28.

Where would you find the anti-codon?

a)

tRNA

b)

mRNA

c)

ribosome

d)

rRNA

29.

The genetic code can help you translate mRNA into ___________?

a)

nucleotides

b)

fatty acids

c)

amino acids

d)

glucose

30.

Why must transcription occur where DNA can be found?

a)

because DNA can't leave

b)

because ribosomes are in the nucleus

c)

because DNA polymerase is found there

d)

because helicase unzips the DNA

31.

A polypeptide is a sequence of ____________________ held together by a ______________ bond.

a)

amino acids; peptide

b)

fatty acids; ionic

c)

proteins; hydrogen

d)

fatty acids; covalent

32.

TRANSCRIBE this DNA sequence: TACGTTACT

a)

AUGCAAUGA

b)

ATGCAATGA

c)

AUGGATUGA

d)

TACGTTACT

33.
Choose the nucleotide sequence of the RNA strand that would be complementary to the following strand: 
GTAGTCA
a)
UATUAGA
b)
ACGACTG
c)
CAUCAGU
d)
CATCAGT
34.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
35.

When using your codon chart, what sequence can you use to find the correct amino acid?

a)

DNA

b)

mRNA

c)

tRNA

d)

Any of these will do

36.

What organelle reads the mRNA and finds the correct amino acid?

a)

DNA

b)

Nucleus

c)

Ribosome

d)

Chloroplast

37.

How many codons: AAU GCG AUG

a)

9

b)

1

c)

3

d)

15

38.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
39.
What process is going on in this photo? 
a)
Transcription 
b)
Translation 
c)
Replication 
d)
All the above 
40.
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
41.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
42.

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

43.

What amino acid would be added to the protein being formed during translation if the mRNA codon reads "AUG?"

a)

Phenylalanine

b)

Tyrosine

c)

Leucine

d)

Methionine

44.
What type of protein would the collagen be?  (Collagen keeps your skin shaped smooth and your joints elastic.)
a)
structural
b)
storage
c)
transport
d)
contractile
45.
What is the NH2 (nitrogen-containing) group on this amino acid called?
a)
amino group
b)
R group
c)
carboxyl group
46.
What is a type of protein that speeds up chemical reactions?
a)
sucrose
b)
insulin
c)
enzyme
d)
antibodies
47.

Which portion of an amino acid provides its unique characteristics to the amino acid?

a)

alpha carbon

b)

R group

c)

carboxyl group

d)

amino group

48.

Which type of chemical reaction links amino acids when making a protein?

a)

dehydration synthesis

b)

hydrolysis

c)

either of these

d)

neither of these

49.

Which portion of an amino acid is likely to have properties of an acid (release a hydrogen ion)? Think about what you have learned about images of the pH scale.

a)

amino group

b)

alpha carbon

c)

carboxyl group

d)

both the amino group and the carboxyl group

50.

Choose the diagram that represents a quaternary protein structure?

a)
b)
c)
d)
51.

The functions of many proteins is determined by the shape. Shape is often determined by characteristics of amino acids. The _____________ region of a protein would orient towards the watery surface of a cell.

a)

Hydrophobic

b)

Hydrophilic

c)

Charged

52.

The _____________ region of a protein would orient away from the watery surface of a cell.

a)

Hydrophobic

b)

Hydrophilic

c)

Charged

53.

The diagram shows the structure of collagen. Based on the diagram, what is the structural level of collagen?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quartenary

54.

Based on the diagram, the side chain of amino acid alanine is;

a)

NH2

b)

COOH

c)

H

d)

CH3

55.

Which of the following describes the secondary structure of proteins?

a)

The sequence of amino acids

b)

The α-helix and β-pleated sheet folding

c)

The folding of the polypeptide chain due to the 'R' groups

d)

The joining of different protein molecules to make one big molecule

56.

Tertiary protein structures are mainly maintained by

a)

hydrogen bond

b)

disulfide bridges

c)

covalent bonds

d)

all of the above

57.

What mutation has occurred here?

T-G-A-C-C-A

T-G-A-G-C-A

a)

Substitution

b)

Deletion

c)

Insertion

d)

Frameshift

58.

Which of the following would result in a frameshift mutation?

a)

Insertions only

b)

Substitution only

c)

Deletion only

d)

Insertions and Deletions

59.

DNA molecule segment is : TTACGCAAG

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

a)

Substitution

b)

Deletion

c)

Insertion

d)

Inversion

60.

A mutation is defined as:

a)

A change in the cell's structure

b)

Anything that changes in an embryo

c)

Any change in the physical features of a human

d)

A change in the DNA sequence

61.
What is a Gene?
a)
A segment of RNA that encodes for a protein
b)
A chromosome
c)
A segment of DNA that encodes for a protein
d)
Your genome
62.

A substitution mutation that has no effect

on amino acids sequence

a)

Insertion Mutation

b)

Translocation

c)

Silent Mutation

d)

Deletion Mutation

63.

Condition caused by nondisjunction at pair 21 during meiosis.

Individuals have an extra chromosome

at pair 21, or a total of 47 chromosomes.

Also called Trisomy 21.

a)

Cystic Fibrosis

b)

Translocation

c)

Hemophilia

d)

Down Syndrome

64.

A point mutation where DNA adenine (A)

is replaced by thymine (T) resulting in a single amino acid change during translation(affects blood cell

shape and function)

a)

Encephelitis

b)

Hemophilia

c)

Sickle Cell Anemia

d)

Influenza

65.

B = brown fur b = white fur

In the Punnett square, what is the probability for white fur?

a)

0%

b)

25%

c)

50%

d)

75%

66.
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
a)
0%
b)
25%
c)
50%
d)
75%
67.

B = brown eyes

b = blue eyes

One brother has genotype BB and the other brother has genotype Bb.

Which statement is true about these two brothers?

a)

They have same phenotype and genotype

b)

They have different phenotypes and genotypes

c)

They have same phenotype, but different genotypes

d)

They have different phenotypes, but the same genotype

68.

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any white-flowering plant resulting from this species?

a)

rr

b)

rR

c)

RR

d)

Rr

69.
In watermelons, green rinds (G) are dominant to striped rinds (g).  What is the genotype of a heterozygous green watermelon?
a)
GG
b)
Gg
c)
gg
d)
green
70.
In cacti, long arms (A) are dominant to short arms (a).  Suppose 2 heterozygous cacti are crossed.  What percentage of their offspring are expected to have short arms?
a)
0%
b)
25%
c)
75%
d)
100%
71.

(Grey fur (G) is dominant over white fur (g) and Black eyes (B) are dominant over red eyes(b))

A male rabbit GGbb crossed with a female rabbit with ggBb.


How many out of 16, have grey fur and red eyes?

a)

4

b)

8

c)

12

d)

16

72.
What goes in box 1
a)
AABb
b)
AABB
c)
aabb
d)
AaBb
73.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
74.
Cross Two Homozygous plants
(
RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 
a)
0%
b)
25%
c)
50%
d)
100%
75.

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

a)

9/16

b)

3/16

c)

1/16

d)

16/16

76.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

77.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
78.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
79.
Huntington's Disease is a dominant trait.
What is the correct genotype for individual I-2?
a)
HH
b)
Hh
c)
hh
d)
H_
80.
What kind of trait is colorblindness if females can be carriers without having the disease?
a)
Regular trait
b)
Sex-linked trait
c)
Co-dominant trait
d)
Incomplete dominant trait
81.
If a trait SKIPS a generation, it is an indication that the trait is....
a)
dominant
b)
recessive
c)
incompletely dominant
d)
co-dominant
82.
What is the mode of inheritance shown here?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked Recessive
d)
Co-dominant
83.

Cystic Fibrosis is a recessive trait. What is the genotype of Bill?

a)

CC

b)

Cc

c)

cc

84.

Cystic Fibrosis is a recessive trait. If Barbie and Ken have another child, what are the chances that it will not have cystic fibrosis? (Hint: make a punnett square)

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

85.

Fragile-X syndrome is a recessive sex-linked disorder located on the X chromosome.


Study the pedigree. What is the Genotype of #3?

a)

XHXh

b)

XhXh

c)

XHXH

d)

XHY

86.

A normal human zygote should have _____ chromosomes inside.

a)

46

b)

23

c)

92

d)

64

87.

You are viewing a patients karyotype. You see 23 chromosomes total. There are no homologous chromosomes. Which type of cell are you viewing?

a)

Egg cell

b)

Zygote

c)

Skin cell

d)

White blood cell

88.
What is the haploid number for this Karyotype?
a)
26
b)
27
c)
52
d)
54
89.
a)
This karyotype shows Trisomy 21
b)
This karyotype has no abnormality
c)
This karyotype is missing a sex chromosome
d)
This karyotype is from a gamete
90.
What is the chromosomal condition of the individual whose karyotype is seen in the image?
a)
Monosomy X (Turner's Syndrome)
b)
Trisomy 21 (Down's Syndrome)
c)
Trisomy 13 (Patau Syndrome)
d)
Trisomy 18 (Edwards's Syndrome)