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Biology EOC STAAR Review Category 4 Biological Processes and Sys

Total questions: 139

Worksheet time: 5hrs 38mins

Name
Class
Date
1.

A monosaccharide is the monomer for which biomolecule:

a)

Lipid

b)

Carbohydrate

c)

Nucleic Acid

d)

Protein

2.

Lipids have which of the following monomer:

a)

Glycerol & fatty acids

b)

amino acids

c)

monosaccharide

d)

nucleotide

3.

Which biomolecule has amino acids as their monomer?

a)

Carbohydrate

b)

Nucleic acid

c)

lipid

d)

protein

4.

The monomer for nucleic acids is called a:

(a)  

5.

A banana is an example of which biomolecule

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

6.

Match the following

a)
1.

protein

b)
2.

nucleic acid

c)
3.

carbohydrate

d)
4.

lipid

7.

Match the following functions to the biomolecule

a)

Act as hormones

1.

Lipid

b)

Build muscle

2.

Protein

c)

Carry genetic information

3.

Nucleic acid

d)

Energy source (cellular respiration)

4.

Carbohydrate

8.

True or False: You need all 4 biomolecules to survive.

(a)  

9.

The biomolecule that holds an organism's genetic information is called ___________.

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

10.

Which of the following is the correct pair of biomolecules and their monomers?

a)

Carbohydrate: Fatty Acids

b)

Protein: Amino acid

c)

Lipid: Nucleotide

d)

Nucleic Acid: DNA

11.

Enzyme is a/an...

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

12.

Which of the following transfers the genetic information for the creation of proteins

from the nucleus to the ribosomes?

a)

DNA

b)

RNA

c)

nucleotide

d)

enzyme

13.

What biomolecule serves as structural materials in hair, nails and connective tissues?

a)

protein

b)

lipid

c)

carbohydrate

d)

nucleic acid

14.

The sugar in RNA is _____________while the sugar in DNA is ________.

a)

deoxyribose, ribose

b)

ribose, deoxyribose

c)

c. ribose, phosphate

d)

ribose, uracil

15.

What is the function of carbohydrates?

a)

Perform cell's functions/tasks

b)

Fast energy

c)

Energy storage

d)

Alter other biomolecules

e)

Store information for cells

16.

What is the function of proteins?

a)

Perform cell's functions/tasks

b)

Fast energy

c)

Energy storage

d)

Alter other biomolecules

e)

Store information for cells

17.

What is the function of nucleic acids?

a)

Perform cell's functions/tasks

b)

Fast energy

c)

Energy storage

d)

Alter other biomolecules

e)

Store information for cells

18.

What is the function of lipids?

a)

Perform cell's functions/tasks

b)

Fast energy

c)

Energy storage

d)

Alter other biomolecules

e)

Store information for cells

19.

Your friend is really irritable while sitting in class. He feels lightheaded and dizzy. He is also feeling a bit of confusion and brain fog.


What inferences are most realistic to make about the biomolecules in your friend's body?

a)

He is running low on fast sources of energy

b)

Proteins are being broken down or reshaped

c)

The coding information in the cell is incorrect or incomplete

d)

There is not enough insulation or energy storage

20.

Your friend is really irritable while sitting in class. He feels lightheaded and dizzy. He is also feeling a bit of confusion and brain fog.


What biomolecule does your friend need?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

21.

Dystrophin is a molecule that holds muscle fibers together. In people with muscular dystrophy, a genetic disease that causes people to lose the ability to walk at a young age, dystrophin molecules never develop.


What biomolecule is this person missing?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

22.

Bowhead whales can have a specialized layer of blubber up to 30 cm’s thick. This acts as a special insulation that traps the heat their muscles create from movement.


What biomolecule is the blubber primarily made of?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

23.

There is a person with Albinism. This individual does not produce melanin. Melanin allows for people to be protected from the sun. Since Albinos do not produce this protein they are prone to getting sunburns.


What biomolecule results in the individual having albinism?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

24.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
25.
What biomolecule do enzymes belong to? 
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
26.
Which biomolecule is a main source of quick energy?
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
27.

Which statement best describes an interaction between the muscular system and the respiratory system?

a)

The hormone adrenaline causes blood vessels to contract and send more blood to major muscles.

b)

Metabolic wastes generated by muscle cells are eliminated in urine.

c)

The diaphragm contracts causing the chest cavity to expand, which draws air into the lungs.

d)

Nutrients absorbed in the small intestine are transported in blood to the brain.

28.

When a person is suddenly cut by a sharp object, a nervous impulse is sent along a sensory neuron to the spinal cord. The impulse is immediately transmitted through motor neurons to produce a response. Which of the following correctly identifies and describes this response?

a)

It is a reflex response that causes various muscles to contract in order to move away from the object.

b)

It is a learned response that does not occur in infants or small children.

c)

It is a conditioned response that occurs only to prevent injury.

d)

It is a conditioned response that occurs only to prevent injury.It is a voluntary response that is initiated only after the impulse has been carried to the relevant area in the braiin.

29.

Coracias garrulus is a blue bird with an orange-brown back. The offspring of this bird have an effective defense mechanism. The young birds vomit and cover themselves in a foul-smelling orange liquid when they sense a threat by predators. Which two systems alert the young bird to the danger and help produce the vomit it uses as a defense?

a)

Nervous and digestive systems

b)

Integumentary and muscular systems

c)

Immune and respiratory systems

d)

Excretory and reproductive systems

30.

The fuzzy millipede, Polyxenus fasciculatus, is found in Texas and is preyed upon by most species of ants. To protect itself against the ants, it ejects fibers from a tuft located at the tail end of its body. The tufts have hooks at the tips and barbs along their length that lock and interlink with the ant's setae, small hairs that cover the body of the ant. When an ant attacks, the millipede flexes its back end toward the ant and wipes the tufts against it. As the ant attempts to remove the tufts, it entangles itself more, becoming immobilized. Which two systems most directly interact in the fuzzy millipede's defense against ants?

SELECT 2 ANSWERS!

a)

Muscular

b)

Integumentary

c)

Immune

d)

Endocrine

31.

The outermost layer of plant stems in dicotyledons consists of epidermal cells and guard cells that surround openings called stomata. The epidermal cells are usually covered with a waterproof layer that provides protection from injury and water loss. The stomata allow gas exchange. The epidermal cells and stomata have functions similar to those of which two human body systems?

a)

Skeletal and respiratory systems

b)

Integumentary and respiratory systems

c)

Cardiovascular and skeletal systems

d)

Cardiovascular and integumentary systems

32.

The diagram shows the reproductive system of a plant. Which of the following best describes the interaction that occurs between a plant's reproductive parts during self-fertilization?

a)

Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches the filament, where the sperm fertilizes the egg.

b)

Pollen is released from the stigma and is transferred to the anther. A pollen tube grows down from the anther through the filament and fuses with the ovule, where the sperm fertilizes the egg.

c)

Pollen moves from the ovule up through the style and is released from the stigma. The pollen is transferred to the anther, where the sperm fertilizes the egg.

d)

Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary, where the sperm fertilizes the egg.

33.

Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant's ability to absorb water.

Which of these functions would be most immediately affected by a reduction in water uptake by roots?

a)

Disease resistance

b)

Photosynthesis

c)

Sunlight absorption

d)

Seed dispersal

34.

Most plant leaves take in more carbon dioxide as light increases. They give off carbon dioxide if light intensity is too low. The graph shows a plant's carbon dioxide levels at different light intensities.

At point X, the rate of which process is equal to the rate of photosynthesis?

a)

Cellular respiration

b)

Transpiration

c)

Growth

d)

Reproduction

35.

Which answer choice best describes a community?

a)

Praying mantises caring for their young

b)

Three-spined sticklebacks living in estuaries

c)

Different species of lizards occupying the same niche

d)

Roosting mother bats recognizing their offspring

36.

The human body is composed of organ systems. Which list represents a system organized from least to most complex?

a)

Heart, cardiac muscle, muscle tissue, muscle cell

b)

Lung tissue, trachea, nostrils, circulatory system

c)

Integumentary system, skin cell, hair, sweat glands

d)

Muscle cell, muscle tissue, biceps muscle, muscular system

37.

Leaves are part of a plant's shoot system. The xylem tissue in leaves transports--

a)

the bacteria needed for nitrogen fixation in root nodules.

b)

the wax required to coat the surface of actively growing tissue.

c)

the water and minerals that are absorbed by the roots.

d)

the oxygen that regulates the rate of carbohydrate production.

38.

Which of the following is an example of the endocrine system directly interacting with the nervous system?

a)

The vertebrae protect the spinal cord from injury.

b)

Hormones provide feedback that affects neural processing.

c)

Sensory receptors in bones send signals about body positions to the brain.

d)

The brain sends signals that control the speed at which food moves through the intestines.

39.

A science class is planning a field trip to a local farm that has a large pond.  Which of the following lists the order of biological organization from smallest to largest that the students can expect to find at the pond?

a)

Organism, community, population, ecosystem

b)

Population, organism, community, ecosystem

c)

Organism, population, community, ecosystem

d)

Population, organism, ecosystem, community

40.

Which system gathers oxygen and gets rid of carbon dioxide?

a)

integumentary

b)

excretory 

c)

immune

d)

cardiovascular

e)

respiratory

41.

Which system moves blood (including plasma through the body)?

a)

integumentary

b)

excretory 

c)

immune

d)

circulatory/

cardiovascular

e)

respiratory

42.
Question Image

Match the following

a)

Integumentary System

1.

protective covering of the body (skin)

b)

Respiratory System

2.

gathers oxygen from the environment and gets rid of carbon dioxide from the body

c)

Excretory System

3.

gets rid of the body's waste (waste could be urine, feces, carbon dioxide)

d)

Cardiovascular/ Circulatory System

4.

moves blood through the body

e)

Immune System

5.

protects the body from foreign substances like bacteria and viruses

43.

The phloem and xylem transport water, sugar, and nutrients. They are part of a plant's:

a)

dermal system

b)

vascular system

c)

reproductive system

44.

Photosynthesis requires the following things:

a)

water

b)

oxygen

c)

glucose

d)

carbon dioxide

e)

sunlight

45.

The Xylem transports​ (a)   ​ (b)  

and the Phloem transports​ (c)   ​ ​ (d)   .

Choose from the below words
nutrients and water
up
glucose (sugar)
down
46.

Which part of the flower produces male sex cells

a)

Petal

b)

Stamen (anther and filament)

c)

carpel (stigma, style, ovary)

47.

Which part of the flower produces eggs and develops embryos?

a)

Petal

b)

Stamen (anther and filament)

c)

carpel (stigma, style, ovary)

48.

Label the flower by putting the words on the correct blanks.

49.

Which includes several species of animals (not non-living things)?

a)

organism

b)

population

c)

community

d)

ecosystem

50.

Which is more complex?

a)

tissue

b)

organ

51.

Which is more complex?

a)

community

b)

population

52.

Which is more complex?

a)

organism

b)

ecosystem

53.

Levels of organization: least complex to most complex

a)

organelle

b)

cell

c)

tissue

d)

organ

e)

organism

1)
2)
3)
4)
5)
54.
Question Image

Match the following

a)

Integumentary System

1.

protective covering of the body (skin)

b)

Respiratory System

2.

gathers oxygen from the environment and gets rid of carbon dioxide from the body

c)

Excretory System

3.

gets rid of the body's waste (waste could be urine, feces, carbon dioxide)

d)

Cardiovascular/ Circulatory System

4.

moves blood through the body

e)

Immune System

5.

protects the body from foreign substances like bacteria and viruses

55.

Match the following

a)

Nervous System

1.

collects information ; sending information in the form of electrical messages throughout the body

b)

Endocrine System

2.

makes chemical messages (hormones) to be sent throughout the body

c)

Digestive System

3.

breaks down food into nutrients that can be used by the body

d)

Muscular System

4.

allows movement of the body; works with the skeletal system to help you move

e)

Male Reproductive System

5.

produces sperm and delivers it to the female

56.

Which of the following can be pathogens?

a)

Bacteria only

b)

Viruses only

c)

Bacteria and viruses

d)

Neither bacteria or viruses

57.

Which pathogen is non-living?

a)

Virus

b)

Bacteria

c)

Fungi

d)

Parasite/Protist

e)

They are all alive

58.

Which type of pathogen is responsible for causing the flu, chicken pox, and yellow fever?

a)

viruses

b)

parasites

c)

fungi

d)

bacteria

59.

Which pathogen is treated with antibiotics?

a)

virus

b)

bacteria

c)

parasite

d)

fungi

60.

What is a first line defense?

a)

Barries within our body which form the immune system.

b)

When the pathogens gets through the external defenses, and the body's response leads to healing

c)

The response from our body when a pathogen gets inside our body.

d)

Physical and chemical barriers which prevent disease-causing pathogens enter your body.

e)

An example of a first line defense are the immune cells.

61.

What is your skin considered as?

a)

Skin is considered as a second and third line defense barrier.

b)

Skin is considered as a large cell which helps destroy pathogens.

c)

Skin is considered a biochemical barrier of the first line defense system.

d)

Skin is considered as a part of the immune system.

e)

Skin is considered as first line defense barrier.

62.

Which structure/s take part in the reflex movements and secretions which remove pathogens from body openings?

a)

Phagocyte cells

b)

Skin (epithelial cells).

c)

Cilia and mucus.

d)

Lymphocyte cells

e)

White blood cells

63.

A potted plant is laid on its side. The roots grow downwards, towards the earth, while the shoots grow upwards, towards the sky.

What sort of tropism is this plant exhibiting?

a)

Hydrotropism

b)

Geotropism

c)

Chemotropism

d)

Autotrophism

64.

What sort of tropism is the plant in the image displaying?

a)

Phototropism

b)

Geotropism

c)

Hydrotropism

d)

Autotrophism

65.

What does the xylem transport? (select all that apply)

a)

Water

b)

Glucose

c)

Minerals

d)

Amino Acids

66.

Which direction do glucose and amino acids travel in the phloem?

a)

From roots to leaves

b)

From Leaves to roots

c)

Materials can be transported in either direction

67.

What direction does water and solutes travel in the xylem?

a)

From roots to leaves

b)

From leaves to roots

c)

Materials can move in either direction

68.
a)

F

b)

G

c)

H

d)

J

69.
a)

F

b)

G

c)

H

d)

J

70.
a)

A

b)

B

c)

C

d)

D

71.
a)

A

b)

B

c)

C

d)

D

72.
a)

A

b)

B

c)

C

d)

D

73.
a)

A

b)

B

c)

C

d)

D

74.
a)

F

b)

G

c)

H

d)

J

75.
Which of the following conclusions can be drawn from this graph?
a)

The optimum pH of the enzyme is 6.6.

b)

The optimum pH of the enzyme is 5.8

c)

The enzyme’s activity increases as pH increases 5.0 to 9.0

d)

The enzyme’s activity is greater around pH of 8.0 .

76.
a)

A

b)

B

c)

C

d)

D

77.
a)

A

b)

B

c)

C

d)

D

78.
a)

A

b)

B

c)

C

d)

D

79.

___________ make food by photosynthesis and pass it back to the stem.

a)

stems

b)

roots

c)

leaves

d)

buds

80.

What food substance is made by plants during photosynthesis?

a)

Carbon dioxide

b)

Glucose

c)

Granulated sugar

d)

Oxygen

81.

Where is chlorophyll found in plants?

a)

Leaves

b)

Root

c)

Flower

d)

Stem

82.

Which are examples of autotrophs? Select all that apply.

a)

Bacteria

b)

Humans

c)

Plants

d)

Algae

83.

Humans cannot make their own food, what are they called?

a)

Autotrophs

b)

Producers

c)

Heterotrophs

d)

Herbivores

84.

Which of the following is not transported in plants?

a)

minerals

b)

oxygen

c)

water

d)

carbon dioxide

85.

This is the process in which plants sweat.

a)

Transportation

b)

Transpiration

c)

Explanation

d)

Exportation

86.

The flow of water in the xylem travels in two directions up and down.

a)

True

b)

False

87.

Both plants and humans have a transport system.

a)

True

b)

False

88.
what is the function of root hair?
a)
it is place to store the food
b)
it has large surface area to absorb more water
89.
Water vapour exits a plant leaf by
a)
the stomata
b)
the epidermis
c)
the palisade cells
d)
the spongy mesophyll
90.
Transpiration is
a)
the movement of water through a plant from the roots up the stem
b)
the loss of water from the leaves of a plant by the process of evaporation
c)
the flow of water into plant roots by osmosis from the soil
d)
the process of minerals and sugars moving through plant veins
91.

Where is xylem found in the plant?

a)

leave -> roots -> stem

b)

roots -> stem -> leaves

c)

root hairs -> leaves -> veins

d)

stem -> roots

92.

What do the guard cells do?

a)

Control active transport

b)

Control nutrients moving into the cell

c)

Controls the rate of transpiration (loss of water through the leaf)

93.
The equation for photosynthesis is
a)
oxygen + water --> glucose + carbon dioxide
b)
oxygen + glucose --> carbon dioxide + water
c)
carbon dioxide + water --> glucose + oxygen
d)
carbon dioxide + glucose --> oxygen + water
94.

How do water enter the roots from the soil?

a)

diffusion

b)

osmosis

c)

transpiration

d)

active transport

95.

The plant shown below is growing in a glass beaker with access to water, nutrients, and light. 

What explanation best accounts for the directional change in growth observed in the plant shown? 

a)

The plant was only watered on the left side of the beaker. 

b)

The plant was initially grown in the dark, then was placed in the sunlight. 

c)

The plant was initially grown on its side in a tray of water, then moved upright into a beaker. 

d)

Sunlight is only accessible from the left side of the beaker. 

96.

What organism(s) perform photosynthesis?

a)

primary consumers

b)

producers

c)

secondary consumers

d)

tertiary consumers

97.

What are the TWO inputs of photosynthesis?

a)

ATP

b)

carbon dioxide

c)

glucose

d)

oxygen gas

e)

water

98.

What are the TWO outputs of photosynthesis?

a)

ATP

b)

carbon dioxide

c)

glucose

d)

oxygen gas

e)

water

99.

What happens to the solar energy (sunlight) absorbed by the chloroplasts?

a)

It is converted into sunlight energy.

b)

It is transferred to glucose.

c)

It is stored in glucose.

d)

It is stored in the bonds of ATP.

100.

What organism(s) perform cellular respiration? Select ALL that apply.

a)

primary consumers

b)

producers

c)

secondary consumers

d)

tertiary consumers

101.

What are the TWO inputs of cellular respiration?

a)

ATP

b)

carbon dioxide

c)

glucose

d)

oxygen gas

e)

water

102.

What are the THREE outputs of cellular respiration?

a)

ATP

b)

carbon dioxide

c)

glucose

d)

oxygen gas

e)

water

103.

What happens to the energy stored in glucose?

a)

It is converted to solar energy.

b)

It is transferred to ATP.

c)

It turns into ATP.

d)

Nothing - It remains in glucose.

104.

What happens to matter between photosynthesis and cellular respiration?

a)

Matter is lost as heat to the environment.

b)

Matter is used by cells to perform daily processes.

c)

Matter is cycled between these processes.

d)

None of these are correct.

105.

What is the role of light in the process of Photosynthesis

a)

Light turns into sugar.

b)

Light provides energy for breaking down sugar.

c)

Light provides the energy for assembling small molecules into sugars

d)

Light is sugar

106.

Chloroplasts are found mostly in the leaves of plants because the large surface area of leaves allows for maximum light absorption.

a)

True

b)

False

107.

Where does cellular respiration take place?

a)

Golgi Apparatus

b)

Chloroplast

c)

Mitochondria

d)

Nucleus

108.

ATP is not a source of energy for plants and animals.

a)

True

b)

false

109.

Cellular respiration is called an aerobic process because it requires

a)

light

b)

exercise

c)

oxygen

d)

glucose

110.

Which organism is NOT likely to carry out cellular respiration?

a)

cypress tree

b)

button mushroom

c)

anaerobic bacterium

d)

Siberian tiger

111.

Which of the following is one of the ways that cellular respiration and photosynthesis are opposite processes?

a)

Photosynthesis releases energy, and cellular respiration stores energy.

b)

Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back.

c)

Photosynthesis removes oxygen from the atmosphere, and cellular respiration puts it back.

d)

Photosynthesis consumes glucose, and cellular respiration produces glucose.

112.

The products of photosynthesis are the

a)

products of cellular respiration

b)

reactants of cellular respiration

c)

products of glycolysis

d)

reactants of fermentation

113.

Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all living things on Earth is

a)

glucose

b)

water

c)

the sun

d)

carbon dioxide

114.

Which process occurs here?

a)

Photosynthesis

b)

Cellular Respiration

115.

During a normal 24-hour period, when do plants do photosynthesis?

a)

Only when it is dark outside

b)

Only when it rains

c)

When it is light or dark outside

d)

Only when it is light outside

116.

Where in the cell does photosynthesis take place?

a)

Chloroplasts

b)

Ribosomes

c)

Mitochondria

d)

Golgi Apparatus

117.

Do plants and humans both use the same type of cellular respiration?

a)

Yes

b)

No

118.
What are the products of aerobic respiration?
a)
Glucose and oxygen
b)
Carbon dioxide and water
c)
Lactic acid
d)
Carbon monoxide
119.
Fermentation involves
a)
aerobic respiration
b)
anaerobic respiration 
120.
Which type of respiration is most efficient?
a)
Aerobic
b)
Anaerobic
121.

Unlike photosynthesis, cellular respiration occurs in

a)

animal cells only.

b)

plant cells only.

c)

all but plant cells.

d)

all eukaryotic cells.

122.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
123.
The first step in getting energy in the cell by breaking down glucose is known as
a)
the Krebs cycle
b)
electron transport
c)
fermentation
d)
glycolysis
124.

Which phrase best describes an exothermic chemical reaction?

a)

Does not absorb any energy

b)

Forms products with higher bond energy than reactants

c)

Is in a state of equilibrium

d)

Releases more energy than it absorbs

125.

What is a substrate?

a)

Substrate

b)

Co-enzyme

c)

reactant

d)

protein

126.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
127.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
128.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
129.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
130.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
131.
What will most likely happen if an appropriate enzyme is added to a chemical reaction? 
a)
The reaction rate will increase.
b)
The equilibrium of the reaction will be maintained. 
c)
The reaction rate will decrease.
d)
The reaction will stop. 
132.
Which of the following best explains why enzymes are necessary for many cellular reactions?
a)
Enzymes supply the oxygen necessary for the reactions
b)
 Enzymes change reactants from solid to liquids during the reactions.
c)
The reactions take up too much space in the cell if the enzymes are missing.
d)
The reactions are too slow to meet the needs of the cell if enzymes are missing. 
133.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
134.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
135.

Circle the enzyme

136.

Circle the substrate

137.

Circle the active site

138.

Why has this enzyme activity decreased so much?

a)

The enzyme has become saturated

b)

The temperature is too low

c)

The enzyme has become denatured

139.

Which type of inhibition can be overcome by adding more substrate?

a)

Noncompetitive(Allosteric) inhibition

b)

Competitive inhibition