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Final Exam Science

Total questions: 173

Worksheet time: 1hrs 27mins

Name
Class
Date
1.

An explanation of events based on knowledge gained from many observations and investigations is which of the following?

a)

Scientific Law

b)

Scientific Theory

c)

Scientific Experiment

d)

Scientific Truth

2.

What is on thousand of the base unit in mass?

a)

Centimenter

b)

Kiloliter

c)

Kilogram

d)

Megagram

3.

Which of the following is the metric unit for length?

a)

Inch

b)

Foot

c)

Meter

d)

Mass

4.

Which is NOT a result of the scientific inquiry?

a)

Technology

b)

Adding more branches of science

c)

New materials

d)

Possible explanations for questions

5.

When you are skeptical of scientific issue in the meida, what are you doing?

a)

Using your bias to form opinions

b)

not being ethical

c)

using critical thinking to question information presented

d)

accepting the information as truthful

6.

Which involves studying a small, random representation for something in order to learn about the larger whole?

a)

Bias

b)

Sampling

c)

Skepticism

d)

None of these

7.

One example of technology that is commonly used by scientist is _________.

a)

Computers

b)

Variables

c)

Observations

d)

Hypothesis

8.

The skill of the person taking measurements can _______.

a)

Cause a law to be discredited

b)

Effect if a theory will be rejected

c)

Never have any effect on an investigation

d)

Limit the accuracy and precision of the measurments.

9.

Testing a hypothesis involves which of the following?

a)

Research

b)

Experimenting

c)

Sharing results

d)

Making charts and graphs

10.

Which of the following describes a pattern or an event in nature that is always true?

a)

Scientific Theory

b)

Scientific Law

c)

Scientific Experiment

d)

Scientific Truth

11.

What is the meaning of the prefix centi?

a)

10

b)

1/100

c)

1000

d)

1/1000000

12.

Which of the following is NOT a branch of science?

a)

Physical

b)

Earth

c)

Biodiesel

d)

Life

13.

Scientists analyze results by using which tool(s) to help recognize patterns?

a)

Speaking at conferences

b)

Forming a hypothesis

c)

Making charts and graphs

d)

Researching

14.

This factor involves the subject, the investigator, or both being unaware of which item is being tested in a scientific investigation.

a)

Blind Study

b)

Repetition

c)

Sampling

d)

None of these

15.

Which of the following is an example of results of scientific investigations?

a)

The newest cell phone

b)

All of these

c)

New crime-scene investigative techniques

d)

Bone Biceramic

16.

Use of knowledge to make products or tools that people can use

a)

Technology

b)

Hypothesis

c)

Science

d)

Metric System

17.

A system of units used by scientist that is based on units of ten

a)

Hypothesis

b)

Science

c)

Technology

d)

Metric System

18.

A prediction or statement that can be tested

a)

Metric System

b)

Science

c)

Hypothesis

d)

Technology

19.

The investigation and exploration of natural events and of the new information that results from those investigations

a)

Technology

b)

Metric System

c)

Science

d)

Hypothesis

20.

The factor being tested in an experiment

a)

Inference

b)

Independent Variable

c)

Observation

d)

Dependent variable

21.

The factor measured during an experiment

a)

Independent variable

b)

Observation

c)

Dependent Variable

d)

Inference

22.

A logical conclusion based on available information or evidence

a)

Dependent Variable

b)

Observation

c)

Independent Variable

d)

Inference

23.

The act of watching and recording what occurs

a)

Independent Variable

b)

Dependent Varaible

c)

Observation

d)

Inference

24.

Put the steps of scientific inquiry in order

1. Identify a problem

2. Draw conclusions

3. Analyze data

4.Test hypothesis

5. Gather Information

6. Form a hypothesis

7.Share results

a)

5,2,1,3,6,4,7

b)

1,5,6,4,3,2,7

c)

7,5,3,2,6,1,4

d)

1,5,6,4,2,3,

25.

Different types of apple trees are grown for 6 months. The number of apples on each tree are counted at the end of the experiment. What is the independent variable?

a)

6 months growth time

b)

Different types of apple trees

c)

Number of apples

d)

None

26.

Different types of apple trees are grown for 6 months. The number of apples on each tree are counted at the end of the experiment. What is the dependent variable?

a)

Number of apples

b)

6 months growth time

c)

Different types of apple trees

d)

None

27.

Different types of apple trees are grown for 6 months. The number of apples on each tree are counted at the end of the experiment. What is the control ?

a)

Different types of apple trees

b)

6 months growth time

c)

None

d)

Number of apples

28.

Different types of apple trees are grown for 6 months. The number of apples on each tree are counted at the end of the experiment. What is the constant?

a)

Number of apples

b)

6 months growth time

c)

None

d)

Different types of apple trees

29.

A pipette is used to draw up and transfer liquids.

a)

True

b)

False

30.

Biology is the study of all living things.

a)

True

b)

False

31.

A hypothesis follows the format of an "if....then...." statement

a)

True

b)

False

32.

Uses light and lenses to enlarge an image of an object

a)

Light Microscope

b)

Compound Microscope

c)

Electron Microscope

33.

Used to study extremely small things such as cell structures

a)

Electron Microscope

b)

Light Microscope

c)

Compound Microscope

34.

A light microscope that uses more than one lens to magnify an object

a)

Electron Microscope

b)

Light Microscope

c)

Compound Microscope

35.

You have a stomach ache and decide to lay down.

a)

Internal Stimuli

b)

External Stimuli

36.

A squirrel sees a cat and runs up a tree.

a)

Internal Stimuli

b)

External Stimuli

37.

A bird is thirsty and drinks some water.

a)

Internal Stimuli

b)

External Stimuli

38.

A lizard is cold so it moves into the Sun.

a)

Internal Stimuli

b)

External Stimuli

39.

Known as the father of microscopy _____.

a)

Robert Hooke

b)

Anton van Leeuwenhoek

c)

Galileo Galilei

d)

Edwin Armstrong

40.

Two horses mate and produce a foal (baby horse). This is an example of ______

a)

Growth

b)

Homeostasis

c)

Reproduction

d)

Development

41.

Which of the following functions can unicellular organism perform?

a)

Respond to stimuli

b)

Grow and develop

c)

Reproduce

d)

All of the above

42.

Photinus pyralis is the scientific name for a firefly in which country?

a)

Australia

b)

United State

c)

Germany

d)

All of these

43.

A tadpole turns into a frog its lifetime. This is called ______.

a)

Responding

b)

Growth and Development

c)

Homeostasis

d)

Reproduction

44.

Who developed the system of binomial nomenclature?

a)

Linnaeus

b)

Mrs. Watson

c)

Mr. Green

d)

Mrs.Oliver

45.

Which of the following is NOT a method your body uses to regulate homeostasis?

a)

Taking a cool shower

b)

Sweating

c)

Shivering

d)

Fever

46.

Humans are in which domain?

a)

Eukarya

b)

Bacteria

c)

Archaea

d)

Fungi

47.

Which of the following workers would NOT use a microscope?

a)

Auto Machine

b)

Doctor

c)

Forensic Scientist

d)

Jeweler

48.

Microscopes help people _________.

a)

See details

b)

Make discoveries

c)

Look into space

d)

Both A and B

49.

Binomial Nomenclature gives how many names to each organism?

a)

Two

b)

Three

c)

One

d)

Four

50.

Binomial Nomenclature gives how many names to each organism?

a)

Two

b)

Three

c)

One

d)

Four

51.

The characteristic of a microscope that involves how clearly the magnified image can be seen is ____________?

a)

Scanning

b)

Transmission

c)

Magnification

d)

Resolution

52.

Which of the following is the scientific name for man?

a)

Binomial Nomenclature

b)

Ursus arctos

c)

Homo stasis

d)

Homo sapien

53.

Growth of a unicellular organism is due to an increase in ______.

a)

Size

b)

Nutrition

c)

Cell parts

d)

None of these

54.

Scientific names of organisms consist of _________.

a)

Genus and Species

b)

Order and Family

c)

Family and Genus

d)

Class and Order

55.

The total magnification of the image in a compound microscope is equal to the magnifications of the ocular lens and the objective lens _______.

a)

Added together

b)

Subtracted

c)

Multiplied together

d)

Divided

56.

Which of the following is NOT classified like the rest?

a)

Tree

b)

Grass

c)

Flower

d)

Rock

57.

Which of the following is not a characteristic of life?

a)

Homeostasis

b)

Breathing

c)

Use energy

d)

Light Source

58.

Which part of the microscope controls the magnification?

a)

Objective lens

b)

Tube

c)

Diaphram

d)

Base

59.

Which part of the microscope controls how much light shines up through the stae?

a)

Tube

b)

Coarse Adjustment

c)

Diaphram

d)

Base

60.

If homeostasis is not maintained in an organism it becomes sick or dies.

a)

True

b)

False

61.

A mountain lions absorbs energy directly from the sun

a)

True

b)

False

62.

Organisms in the same species can produce fertile offspring.

a)

True

b)

False

63.

Organisms in the same species can produce fertile offspring.

a)

True

b)

False

64.

Science can answer all questions.

a)

True

b)

False

65.

Robert Hooke observed and studied plant cells.

a)

True

b)

False

66.

_____________ are things that have all of the characteristics of life.

a)

Organisms

b)

Animals

c)

Plants

d)

Both A and B

67.

Smallest unit of life.

a)

Cell

b)

Atom

c)

Matter

d)

Proton

68.

Unicellular organism are organized by having __________

a)

Responding to their environment

b)

Reproducing

c)

Structures that perform specific functions.

d)

They are not organized

69.

The two types of stimuli are:

a)

Good and bad

b)

Internal and external

c)

Happy and Sad

d)

TEMs and SEMs

70.

Put the levels of the current scientific classification system in order.

1.Domain

2. Genus

3. Class

4. Kingdom

5. Phylum

6. Family

7.Order

8. Species

a)

1,4,5,7,2,3,6,8

b)

1,7,4,2,3,6,5,8

c)

1,7,4,2,3,5,6,8

d)

1,2,4,3,5,6,8,7

71.

Directs all cell activity

a)

Cell membrane

b)

Nucleus

c)

Cell Wall

d)

Mitochondria

e)

Cytoskeleton

72.

Protective layer around all cells

a)

Cell membrane

b)

Nucleus

c)

Mitochondria

d)

Cytoskeleton

e)

Cell wall

73.

Site where the majority of ATP is made

a)

Mitochondria

b)

Cell membrane

c)

Cell wall

d)

Cytoskeleton

e)

Nucleus

74.

Protects the cell of the plants

a)

Cell membrane

b)

Nucleus

c)

Mitchondria

d)

Cytoskeleton

e)

Cell wall

75.

Network of threadlike proteins inside a cell that gives it shape and helps it move

a)

Mitochondria

b)

Cell wall

c)

Cell membrane

d)

Nucleus

e)

Cytoskeleton

76.

What is the difference between rough endoplasmic reticulum (ER) and smooth endoplasmic reticulum ( ER)?

a)

Rough ER has lysosomes covering the organelle while smooth ER does not.

b)

Rough ER has ribosomes covering the organelle while smooth ER does not.

c)

Smooth ER releases energy while rough ER absorbs energy.

d)

Rough ER is found on the inside of the cell while smooth ER is found on the outside of the cell.

77.

Which of the following is true of cells?

a)

Only prokaryotic cells have vacuoles.

b)

Eukaryotic cells are usually unicellular.

c)

Prokaryotic cells have many organelles, each with their own specialized functions.

d)

Only eukaryotic cells contain organelles

78.

Which of the following is not a function of organelles?

a)

Process energy and remove waste

b)

Make macromolecules

c)

Store genetic material

d)

Dissolving proteins

79.

All of the following are principles of the cell theory EXCEPT ____.

a)

The cell is the smallest unit of life

b)

Water is the main ingredient in every cell

c)

All new cells come from preexisting cells

d)

All living things are made of one or more cells

80.

Which substance makes up the macromolecule carbohydrate and provides support?

a)

Amino acids

b)

Ribosomes

c)

Nucleotides

d)

Cellulose

81.

Which best explains the function of a cell membrane?

a)

Offers protection from the outside environment

b)

Provides a framework to help the move

c)

Transforms energy in the cell into ATP

d)

Removes viruses from inside the cell

82.

Photosynthesis is the process that plants use to make glucose. Where does this process take place?

a)

Central Vacuole

b)

Chloroplasts

c)

Mitochondria

d)

Rough Endoplasmic Reticulum

83.

Materials enter and leave the cell through the openings in its ______.

a)

Organelles

b)

DNA

c)

Membrane

d)

Chromatin

84.

Which is NOT a function of proteins in a cell?

a)

Production of genetic material

b)

Chemical breakdown of substances

c)

Transport

d)

Communication

85.

Which is NOT a function of proteins in a cell?

a)

Production of genetic material

b)

Chemical breakdown of substances

c)

Transport

d)

Communication

86.

Which is NOT a macromolecule?

a)

Nucleic acids

b)

Carbohydrates

c)

Proteins

d)

Water

87.

Which of the following provides a protective barrier in the cell because it does not dissolve in water?

a)

Water

b)

Lipids

c)

DNA

d)

Proteins

88.

Robert Hooke used the microscope to observe and name _____.

a)

Insects

b)

Blood types

c)

Algae

d)

Cells

89.

What scientist proposed that all cells come from preexisting cells?

a)

Anton van Leeuwenhoek

b)

Paula Watkins

c)

Robert Hooke

d)

Rudolf Virchow

90.

Which two carbohydrates provide energy to the cell?

a)

Lipids and nucleic acids

b)

Sugars and starches

c)

Nucleic acids and proteins

d)

Lipids and carbohydrates

91.

All unicellular and multicellular organisms carry out all life processes.

a)

True

b)

False

92.

All plant cells are prokaryotic

a)

True

b)

False

93.

Cilia and Flagella are two examples of cell appendages

a)

True

b)

False

94.

Eukaryotic cells are usually multicellular and the type of cell humans are

a)

True

b)

False

95.

DNA strands for deoxyribonucleic acid

a)

True

b)

False

96.

All of the following are true about ribosomes expect ______.

a)

Makes proteins

b)

Made in the nucleolus

c)

Break down cellular components

d)

Found on the rough ER

97.

Which of the following are two types of nucleic acids?

a)

DNA and RNA

b)

Sugar and Starches

c)

Plant and Animal

d)

Proteins and Carbohydrates

98.

Why do substances easily dissolve in water?

a)

It contains 3 atoms

b)

It is a liquid

c)

It is a molecule

d)

It has positive and negative ends

99.

What are two types of cells?

a)

Plant and Animal

b)

DNA and RNA

c)

Prokaryotic and Eukaryotic

d)

Active and Passive

100.

Which of the following is not found in a plant cell?

a)

Cell wall

b)

Lysosome

c)

Chloroplast

d)

Central Vacuole

101.

What is the fluid inside all cells that provides water environment where cell processes take place?

a)

Cytoskeleton

b)

Mitochondria

c)

Golgi apparatus

d)

Cytoplasm

102.

Water is what percentage of a cells volume?

a)

70%

b)

0%

c)

25%

d)

95%

103.

Animals are able to absorb light energy directly from the sun.

a)

True

b)

False

104.

Passive transport takes place without the use of energy.

a)

True

b)

False

105.

Cell membrane only control the movement of substances into the cell.

a)

True

b)

False

106.

Photosynthesis results in the release of oxygen

a)

True

b)

False

107.

Most ATP is made in the mitochondria

a)

True

b)

False

108.

In the first stage of respiration, Glycolysis, glucose is broke down.

a)

True

b)

False

109.

Respiration takes place in the cells of plants at night and photosynthesis takes place during the day.

a)

True

b)

False

110.

Diffusion is a type of active transport.

a)

True

b)

False

111.

In passive transport, materials move from areas of high concentration to area of lower concentration.

a)

True

b)

False

112.

Animals use chlorophyll to produce glucose.

a)

True

b)

False

113.

Science is so much fun!

a)

True

b)

False

114.

Which of the following is NOT involved in photosynthesis or respiration?

a)

Water

b)

Carbon Dioxide

c)

Chlorophyll

d)

Cytokinins

115.

Glucose + Oxygen ------> Carbon dioxide + water

a)

ATP

b)

Alcohol

c)

Lactic Acid

d)

Osmosis

116.

Which substance is released as a waste product during photosynthese?

a)

Glucose

b)

Carbon Dioxide

c)

Oxygen

d)

Lactic Acid

117.

Photosynthesis is the process in which plants use energy from light to produce _______.

a)

New cells

b)

Organelles

c)

Food (glucose)

d)

None of the above

118.

Diagram B is an example of ___________.

(go from left to right starting with A when labeling diagrams)

a)

Exocytosis

b)

Active Transport

c)

Osmosis

d)

Equilibrium

119.

Diagram A is an example of ___________.

(go from left to right starting with A when labeling diagrams)

a)

Diffusion

b)

Active transport

c)

Osmosis

d)

Equilibrium

120.

The green color of tree leaves is ________ located in the _______.

a)

Auxins, Cell

b)

Carbon Dioxide, Air

c)

Chlorophyll, Chloroplast

d)

Gibberellins, Mitochondria

121.

Which substance is broken down during glycolysis?

a)

Glucose

b)

Carbon dioxide

c)

Chlorophyll

d)

Water

122.

The cell membrane is _______ because it contains holes that controls what materials enter and leave the cell.

a)

Flexible

b)

Semipermeable

c)

Rigid

d)

Lipid

123.

Substances too large to pass through the cell membrane enter the cell in a process called ______.

a)

Endocytosis

b)

Passive transport

c)

Exocytosis

d)

Active transport

124.

Active transport occurs when _______ is used to move substances through a membrane.

a)

Osmosis

b)

Energy

c)

Diffusion

d)

Chlorophyll

125.

The process that releases energy without using oxygen is _______.

a)

Photosynthesis

b)

Respiration

c)

Fermentation

d)

Osmosis

126.

The passive transport of water through a membrane is ______ (diffusion of water).

a)

Osmosis

b)

Fermentation

c)

Equilibrium

d)

Active Transport

127.

Glucose ----------> ATP + Carbon Dioxide + Alcohol

a)

Diffusion

b)

Fermentation

c)

Photosynthesis

d)

Cellular Respiration

128.

Diagram F is an example of ___________.

(go from left to right starting with A when labeling diagrams)

a)

Diffusion

b)

Active Transport

c)

Osmosis

d)

Equilibrium

129.

What is the main difference between active transport and passive transport?

a)

During active transport the water inside the cell is used tot transport substances throughout the cell. Passive transport uses the cell's cytoplasm to move substances around the cell.

b)

Passive transport moves substances through the cell without using the cell's energy and active transport moves substances using the cell's energy.

c)

Active transport moves substances from higher concentration to lower concentrations and passive transport moves substances from lower concentrations to higher concentrations.

d)

Passive transport moves substances that are too large to get through the cell membrane by forming a vesicle inside the cell and active transport forms the vesicle on the outside of the cell.

130.

A glucose molecule is made of carbon, hydrogen, and ______________.

a)

Oxygen

b)

Sugar

c)

Nitrogen

d)

Water

131.

Which form of energy is necessary in photosynthesis?

a)

ATP

b)

Lactic Acid

c)

Glycolysis

d)

Light energy from the sun

132.

The use of transport proteins to move materials from high concentration to low concentration.

a)

Osmosis

b)

Active transport

c)

Facilitated Diffusion

d)

Respiration

133.

Which of the following is not a waste product of fermentation?

a)

Alcohol

b)

Carbon Dioxide

c)

Lactic acid

d)

Glucose

134.

One molecule of water contains how many atoms?

a)

1

b)

3

c)

12

d)

46

135.

Which of the following are transport proteins?

a)

Carrier

b)

Channel

c)

Both A and B

d)

ATP

136.

Type of active transport that involves moving materials out of a cell.

a)

Exocytosis

b)

Diffusion

c)

Endocytosis

d)

Facilitated Diffusion

137.

Where do fermentation and glycolysis both occur?

a)

Cytoplasm

b)

Mitchondria

c)

Nucleus

d)

None of these

138.

Bird A has the phenotype ll for bill length, and Bird B is LL. A short bill describes Bird A's phenotype.

a)

True

b)

False

139.

Recessive traits are only seen when alleles are homozygous recessive.

a)

True

b)

False

140.

A florist has one of a kind plant that usually has beautiful red flowers, but sometimes has white flower. If she crosses plants A and B as shown here, 50% of the offspring will have red flowers.

a)

True

b)

False

141.

Mistakes can happen during replication of genes.

a)

True

b)

False

142.

Dominate traits are always shown in an organism's offspring.

a)

True

b)

False

143.

When Mendel cross-pollinated two second generation hybrid purple-flowered plants, he received?

a)

Purple and white flowered offspring

b)

All purple flowered offspring

c)

All white flowered offspring

d)

Mostly white flowered offspring

144.

Each of the following is a form of mutation EXCEPT ______.

a)

Replication

b)

Substitution

c)

Insertion

d)

Deletion

145.

A genetic factor that blocks another genetic factor is call a(n)______.

a)

Genetic trait

b)

Heredity trait

c)

Recessive trait

d)

Dominant trait

146.

A recessive trait is observed when _______ recessive genetic factors are present in offspring.

a)

0

b)

1

c)

2

d)

3

147.

Parents pass their traits down to their offspring through their ____________.

a)

Daughter cells

b)

Son cells

c)

Body cells

d)

Reproductive (sex) cells

148.

A true-breeding purple plant and a true-breeding white plant cross-pollinate. The offspring will be _______.

a)

All purple

b)

half purple, half white

c)

75 % purple , 25% white

d)

75% white .25% purple

149.

Bird A has the genotype ll for bill length, and Bird B is LL. The bills of their offspring would be:

a)

long in 100% of the offspring

b)

short in 100% of the offspring

c)

long in the 50% of the offspring

d)

short in 75% of the offspring

150.

A _________ is part of the DNA code on a chromosome.

a)

Gene

b)

Genotype

c)

Phenotype

d)

Gender

151.

A red and a white snapdragon were crossed. Because of incomplete dominance , the offspring were ________ .

a)

100% red

b)

100% white

c)

showing both rtw on flowers

d)

100% pink

152.

In a Punnett square, a capital letter stand for a ____ allele.

a)

Recessive

b)

Dominant

c)

Homozygous

d)

Heterozygous

153.

Mutations cause changes in proteins, which changes ________.

a)

Breeding

b)

Traits

c)

Whether its recessive or dominate

d)

Molecules

154.

Which of these is a recessive genetic disorder cause by a mutation.

a)

Down Syndrome

b)

Type AB blood

c)

Type O blood

d)

Cystic Fibrosis

155.

Of the following, which represents a homozygous recessive genotype?

a)

TT

b)

tt

c)

Tt

d)

TTT

156.

A Punnett square shows you all the way in which ____ can combine.

a)

Alleles

b)

Eggs

c)

Sperm

d)

Colors

157.

Which of the following is NOT an external causes of mutation?

a)

Exposure to X-rays

b)

Exposure to ultraviolet light

c)

Exposure to neon light

d)

Exposure to radioactive materials

158.

Mendel concluded that ______ factors control each inherited trait.

a)

2

b)

3

c)

4

d)

5

159.

Gregor Mendel studied heredity using ______ plants.

a)

Rose

b)

Pea

c)

Maize

d)

Tundra

160.

The genotype is the two alleles that control the _____ of the trait.

a)

Allele

b)

Phenotype

c)

Replication

d)

Inheritance

161.

The study of _____ is called genetics.

a)

Heredity

b)

Dominance

c)

Pea plants

d)

Mutations

162.

Which of the following is NOT one of the nitrogen bases that form the rungs of the ladder in DNA?

a)

Adenine

b)

Bionine

c)

Thymine

d)

Guanine

163.

Where is the location of the DNA?

a)

Proteins

b)

Chromosomes

c)

Mitchondria

d)

Gene

164.

Of the following, which represents a heterozygous dominate genotype?

a)

BB

b)

Br

c)

Bb

d)

bb

165.

Kari has two pet rats with black fur. When her rats mated, one of their four offspring had white fur, and the other three had black fur. Which is most likely true for Kari's rats?

a)

Both parents are homozygous for the white-fur trait, which is recessive.

b)

Both parents are heterozygous for the white-fur trait, which is dominant.

c)

Both parents are heterozygous for the white-fur trait, which is recessive

d)

Both parents are heterozygous for the white-fur trait, which is sex-linked

166.

Which of the following is not part of a nucleotide?

a)

A nitrogen base

b)

A phosphate group

c)

A sugar

d)

A water molecule

167.

Genes plus environment and _______ affect phenotype.

a)

Life choices

b)

Proteins

c)

X-Rays

d)

Multiple Alleles

168.

DNA is in the shape of a __________.

a)

Circle

b)

Double Helix

c)

Twin strand

d)

Molecule

169.

In DNA, thymine always binds with _____________.

a)

Cytosine

b)

Allele

c)

Adenine

d)

Thymine

170.

All mutations are harmful.

a)

True

b)

False

171.

Children carry identical DNA of their parents.

a)

True

b)

False

172.

Sperms and eggs are male and female sex cells and each carry 23 chromosomes.

a)

True

b)

False

173.

Ms. Golden is the BESTTTTT

a)

True

b)

Very True

c)

For sure True