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7th Grade 3rd Q Exam

Total questions: 112

Worksheet time: 2hrs 10mins

Name
Class
Date
1.

The outermost layer of this cell is referred to as the _______?

a)

cell membrane

b)

capsule

c)

cell wall

d)

cytoplasm

2.

The jelly-like substance that is inside of the cell which supports and protects cell's organelles is known as the _________?

a)

cell membrane

b)

cell wall

c)

cytoplasm

d)

ribosome

3.

This structure is known as

a)

pilli

b)

DNA

c)

Ribosome

d)

flagellum

4.

The cell membrane is shown in which of the following diagrams?

a)
b)
c)
d)
5.

What is the function of these structures?

a)

movement

b)

stores genetic material

c)

to attach to other bacterial cells

d)

locomotion

6.
A unicellular organism that does not have a nucleus
a)
fungus
b)
bacteria
c)
biome
d)
virus
7.
A long, tail like structure that helps a bacterium to move is called a...
a)
cilia
b)
pili
c)
flagellum
d)
capsule
8.
The bacteria seen in the picture is
a)
bacillus
b)
coccus
c)
spirillus
9.
The bacteria seen in the picture is
a)
coccus
b)
bacillus
c)
spirillus
10.
The bacteria seen in the picture is
a)
bacillus
b)
coccus
c)
spirillus
11.
The three main shapes of bacteria are all of the following EXCEPT
a)
rod shaped (bacillus)
b)
spherical (coccus)
c)
octagon (octilli)
d)
spiral (spirillus)
12.
All bacteria have DNA. 
a)
true
b)
false
13.
A disease causing organism
a)
pathogen
b)
poison
c)
vaccine
d)
prokaryote
14.
Bacteria are called _____ because their DNA is not contained in a nucleus.
a)
prokaryotes
b)
eukaryotes
c)
cells
d)
viruses
15.
Based on the figure, which antibiotic inhibited the growth of the bacteria the most?
a)
A
b)
B
c)
C
d)
D
16.
The outer covering of a bacteria cell is called the
a)
flagella
b)
cytoplasm
c)
cell wall 
d)
capsule
17.
Bacteria can be helpful to humans by 
a)
producing vitamin K
b)
helping to digest food
c)
protect against harmful bacteria
d)
all of the answer choices.
18.
Bacteria undergo which type of reproduction? 
a)
asexual
b)
sexual
19.
If you go to a doctor and are prescribed antibiotics you probably have an illness cause by a 
a)
virus
b)
bacteria
c)
host cell
d)
macrophage
20.
The antibiotic resistance trait can be passed from one bacterium to another during:
a)
conjugation
b)
retaliation
c)
flagellination
d)
pili parties
21.
Antibiotic resistant bacteria are a problem because:
a)
we can't help people with those infections
b)
bacteria smell pretty bad
c)
something about viruses
d)
they are not a problem, I love being sick
22.
What do you call a cell without a nucleus?
a)
Eukaryote
b)
Prokaryote
23.
All bacteria are 
a)
eukaryotic.
b)
prokaryotic.
c)
eukaryotic and multicellular.
d)
prokaryotic and unicellular.
24.
Prokaryotes are unlike all other organisms in that their cells
a)
lack nuclei.
b)
have organelles.
c)
have cell walls.
d)
lack nucleic acids.
25.
What is the shape of bacillus bacteria?
a)
round
b)
spherical
c)
rod shaped
d)
corkscrew
26.
The process of converting nitrogen into a form plants can use is known as nitrogen
a)
formation.
b)
ammonification.
c)
decomposition.
d)
fixation.
27.
Disease-causing organisms are known as
a)
cocci.
b)
bacilli.
c)
pathogens.
d)
archaea.
28.
Which of the following can be helpful in treating bacterial diseases but NOT viral diseases?
a)
vaccines
b)
antibiotics
c)
antiviral drugs
d)
aspirin
29.
Streptococcus is a bacterium that causes strep throat.  What shape is this bacterium?
a)
spherical
b)
rod-shaped
c)
corkscrew
d)
spiral
30.

Bacteria are eukaryotic

a)

True

b)

False

31.

A bacteria's flagellum is

a)

tubes inside the cell

b)

tail-like structure for movement

c)

a long chain of chemical proteins for energy

32.

Bacteria can stick to surfaces because the cell has

a)

flagellum

b)

capsule

c)

pili

33.

What are chemicals that are capable of destroying the growth of bacteria?

a)

aspirin

b)

antibiotics

c)

anchovies

34.

Bacteria that can survive in extreme environments are called

a)

pathogens

b)

eubacteria

c)

archea

35.

Both bacteria and plant cells both have a

a)

cell whall

b)

capsule

c)

pili

36.

Scientists have created a bacterium to clean up wastes

a)

true

b)

false

37.

Bacteria is added to cheese

a)

true

b)

false

38.
A prokaryote does NOT have....
a)
a cell membrane
b)
a nucleus
c)
genetic information
d)
any of the these
39.
What is the flagellum used for in a bacterium?
a)
movement
b)
capturing food
c)
attacking predators
d)
to make the bacterium appear larger than it really is
40.
Bacteria that are decomposers ....
a)
make their own food.
b)
feed on other organisms
c)
feed on dead organisms
d)
none of these
41.
Bacteria can form ________ to protect itself from harsh conditions.
a)
endospores
b)
armor
c)
spores
d)
mushrooms
42.

Conjugation occurs when ________________.

a)

None of these.

b)

a virus injects DNA into the bacterium.

c)

the DNA of the bacteria is transferred from one bacteria to another.

d)

bacteria take up DNA from the environment.

43.
If one strand of DNA has the sequence TTACCG, the sequence of the other strand of the same molecule will be
a)
AATGGC
b)
TTACCG
c)
AACGGC
d)
AATGGG
44.
Once replication in a DNA molecule is complete, each new DNA molecule contains 
a)
two new strands.
b)
3 exact copies of strands.
c)
one new strand and one old.
d)
two old strands.
45.
Which of the following will NOT generally cause mutations?
a)
radiation
b)
DNA replication
c)
chemicals
d)
viruses
46.
What are the functions of genes?
a)
instructions for producing proteins
b)
instructions for producing DNA
c)
instructions for producing lipids
d)
they have no function
47.
What does mRNA do?
a)
provides information from DNA to ribosomes
b)
transfers amino acids to the ribosomes
c)
makes up ribosomes
d)
builds proteins
48.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
49.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
Justin Bieber
50.
T = tall an t = short
What is the phenotype for Tt?
a)
short
b)
tall
c)
medium sized
d)
neither tall or short
51.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
52.
The passing of physical characteristics from parent to offspring is __________.
a)
genetics
b)
heredity
c)
genes
d)
traits
53.
When a capital letter is used, what kind of allele is being represented?
a)
Recessive Allele
b)
Codominance
c)
Punnett Squares
d)
Dominant Allele
54.
Are recessive traits shown with capital or lowercase letters? 
a)
Capital
b)
Lowercase
55.
outward appearance of an organism, regardless of its genes.
a)
phenotype
b)
genotype
c)
haploid
d)
deploid
56.
The physical appearance or the way a gene looks is known as it's....
a)
genotype
b)
allele
c)
gene
d)
phenotype
57.
The different forms of genes are known as
a)
environment
b)
probability
c)
traits
d)
alleles
58.
Two of the same genes for a trait (sometimes called purebred). BB or bb
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
59.
Two different genes for a trait (sometimes called hybrid). Bb
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
60.
G = dominant green and y = recessive yellow
A fish has a Gy genotype, what will its phenotype be?
a)
yellow
b)
green
c)
greenish-yellow
d)
red
61.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
62.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
63.
What is a gene?
a)
An entire chromosome that  codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
Chemical messengers in your brain that code for a trait
64.
What is a genotype? 
a)
The genetic make up (code)
b)
The physical trait
65.
phenotypes that shows both traits
a)
semi-dominant
b)
heterozygous
c)
codominance
66.
the following letters are an example of _______  dd
a)
recessive
b)
homozygous recessive
c)
homozygous dominant
d)
dominant
67.
Dd letters are an example of....
a)
heterozygous genes
b)
homozygous genes
c)
dominant genes
d)
recessive genes
68.

An inheritance pattern in which the offspring's phenotype is a combination of the parent's phenotype

a)

co-dominance

b)

incomplete dominance

c)

polygenic inheritance

69.

When multiple genes determine the phenotype of a trait

a)

incomplete dominance

b)

co dominant

c)

polygenic inheritance

70.

A model used to predict possible genotypes and phenotypes of offspring

a)

square

b)

punnett square

71.
What does rRNA do?
a)
provides information from DNA to ribosomes
b)
transfers amino acids to the ribosomes
c)
makes up ribosomes
d)
builds proteins
72.
What does tRNA do?
a)
provides information from DNA to ribosomes
b)
transfers amino acids to the ribosomes
c)
makes up ribosomes
d)
builds proteins
73.
What is the process that copies information from DNA into RNA?
a)
protein synthesis
b)
transcription
c)
translation
d)
DNA Polymerase
74.

Differences in traits such as hair texture are determined by differences in-

a)

the location of sugar groups in DNA

b)

the sequence of nucleotides in DNA

c)

the number of nitrogenous bases in DNA

d)

the molecules attached to the phosphate in DNA

75.

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

76.

Nitrogenous (nitrogen) bases are located on both strands of DNA double helix. What is the significance of nitrogen bases?

a)

The # of A's and C's determine the type of RNA produced

b)

The order of the bases determines the order of the amino acid that make up the protein

c)

The amount of T and G in DNA determines the length of the genes

d)

The type of H bonding between bases determines the amino acid that makes up the protein

77.

What strand of DNA matches

a)
b)
c)
d)
78.

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

a)
b)
c)
d)
79.

The sequence of bases in the DNA is most important for which of the following?

a)

Providing the instructions for the traits of an organism

b)

Preventing mutations from occurring during DNA replication

c)

Allowing the DNA to have the shape necessary for the replication

d)

Helping form the sugar-phosphate backbone of DNA molecules

80.

What #'s make up the backbone of DNA?

a)

1 and 2

b)

3 and 5

c)

1 and 3

d)

6 and 8

81.

Which components bond with adenine in a section of DNA?

a)

1, 3, 5, AND 6

b)

3 AND 5

c)

2 AND 4

d)

3,4,7 AND 8

82.

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

83.
What type of RNA carries the DNA message out of the nucleus to the ribosomes?
a)
mRNA
b)
tRNA
c)
RNA
d)
DNA
84.
What do we call the process of turning DNA into mRNA?
a)
Translation
b)
Transcription 
c)
Replication
85.
When DNA is transcribed to RNA.... 
a)
A pairs with U
b)
C pairs with U
c)
A pairs with T
d)
C pairs with T
86.
Amino acids are the building blocks of... 
a)
DNA
b)
RNA
c)
Atoms
d)
Proteins
87.
Which of the following best describes a DNA molecule? 
a)
contains ribose 
b)
made of amino acids
c)
contains Uracil
d)
double helix
88.
Where does transcription take place?
a)
nucleus
b)
cytoplasm
c)
ribosome
89.
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
90.
True or false:  RNA is double-stranded.
a)
true
b)
false
c)
it depends on the type
91.
Which of these bases does not exist in RNA?
a)
C
b)
T
c)
U
d)
A
92.
_______ is made during transcription and ________ is made during translation.
a)
mRNA / a protein
b)
a protein / mRNA
c)
Ribosome / Nucleus
d)
mRNA / tRNA
93.
In comparison to a DNA strand, a 
a)
mRNA strand is shorter and single stranded
b)
mRNA strand is longer and single stranded
c)
mRNA strand is shorter and double stranded
d)
mRNA strand is longer and double stranded
94.
Nucleotides are made up of a sugar, phosphate, and..?
a)
nitrogenous base
b)
nucleic acid
c)
cholesterol
d)
fatty acid
95.
Which of the following is the sugar found in RNA?
a)
Ribose
b)
Maltose
c)
Deoxyribose
d)
Amylose
96.
Codons contain ______ bases
a)
1
b)
3
c)
6
d)
9
97.
Which is the organelle that makes proteins?
a)
Nucleus
b)
Ribosomes
c)
Rough ER
d)
Golgi Apparatus
98.
What is the correct order?
a)
Transcription then Translation
b)
Translation then transcription
c)
Translation then replication
d)
Replication then Translation
99.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
100.
Brings the amino acids to the ribosome
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
101.

What is the smallest unit piece of a protein?

a)

nucleic acid

b)

amino acid

c)

protonic acid

d)

nucleotide

102.

What is the smallest unit piece of DNA?

a)

nucleotide

b)

amino acid

c)

phospholipid

d)

water

103.

Which of the following is NOT a part of a nucleotide?

a)

sugar

b)

phosphate

c)

nitrogen base

d)

amino acid

104.

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

a)

Thymine

b)

Adenine

c)

Guanine

d)

Monocine

105.

Which of the following is described as a double helix?

a)

rRNA

b)

tRNA

c)

rRNA

d)

DNA

106.

G always matches with what?

a)

C

b)

A

c)

T

d)

U

107.

A set of 3 nucleotide bases codes for one what?

a)

protein

b)

amino acid

c)

phosphate

d)

gene

108.

Which of the following is the DNA sequence that produced this RNA sequence? UUAAUU

a)

TTUUTT

b)

TTTTTT

c)

AATTAA

d)

AAUUAA

109.

Which of the following would be the RNA created from this DNA code? ACGGTA

a)

TGCCAT

b)

UGCCUA

c)

ACGGTA

d)

CGUUAT

110.

What protein does the codon GTC make?

a)

Met

b)

Gly

c)

Val

d)

Trp

111.

What's the difference between DNA and RNA

a)

RNA performs photosythesis

b)

RNA contains W instead of G

c)

RNA has three helixes

d)

RNA has U instead of T

e)

RNA has one helix

112.

What is the first step of transcription?

a)

DNA unwinds

b)

Mitosis

c)

Nucleotides pair to a strand of DNA

d)

A protein is formed

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