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3.1 Unit Review Homeostasis

Total questions: 93

Worksheet time: 47mins

Name
Class
Date
1.

Students are observing particles moving against the concentration gradient in a lab investigation. Which type of transport are they observing?

a)

osmosis

b)

active Transport

c)

facilitated diffusion

d)

diffusion

2.

Students are observing particles moving with the concentration gradient in a lab investigation. Which type of transport are they observing?

a)

using pumps to move things quickly

b)

passive transport

c)

osmosis

d)

endocytosis

3.

This picture shows molecules of red dye that have moved. What is this type of movement called?

a)

Osmosis; the water molecules are moving from high concentration to low

b)

Diffusion; the dye molecules are moving from low to high concentration

c)

Diffusion; the dye molecules are moving from high to low concentration.

d)

Facilitated diffusion; because the molecules are moving through a protein channel.

4.

The cell membrane is responsible for allowing molecules to diffuse into or out of the cell. What type of movement is diffusion?

a)

Passive transport

b)

Active transport

5.

The cell membrane is responsible for allowing molecules to diffuse through a protein channel, from high concentration to low concentration. What type of transport is this?

a)

Passive Transport

b)

Active transport

6.

The cell membrane needs to use energy to move molecules quickly out of the cell through a pump. What type of transport is this?

a)

Passive transport

b)

Active transport

7.

Passive transport is when molecules move ________ the concentration gradient.

a)

against

b)

up

c)

down

d)

with

8.

Active transport is when molecules move ________ the concentration gradient.

a)

against

b)

up

c)

down

d)

with

9.

This picture is a representation of what type of transport?

a)

Osmosis because it is diffusing through a protein from an area of high concentration to low concentration.

b)

Facilitated diffusion because it is diffusing through a protein from an area of high concentration to low concentration.

c)

Facilitated diffusion because it is diffusing through a protein from an area of low concentration to high concentration.

d)

Simple diffusion because it is diffusing through a protein from an area of high concentration to low concentration.

10.

This picture describes the movement of molecules across the cell membrane. Choose 2 answers that correctly describes the movement of the molecules.

a)

Molecules are moving up the concentration gradient.

b)

Molecules are moving from an area of low concentration to area of high concentration .

c)

Molecules are moving down the concentration gradient.

d)

Molecules are moving from an area of high concentration to area of low concentration.

11.

What do you think will not allow the turgid plant cell to burst?

a)

chloroplast

b)

cell membrane

c)

cell wall

d)

central vacuole

12.

Which cell do you think would be most ideal for maintaining homeostasis?

a)

The smallest cell because it would be more efficient to remove and obtains molecules

b)

The largest one because it would be able to obtain more food and store for longer periods of time.

c)

The largest one because it has more room to grow

d)

The medium cell because it would be more efficient to remove and obtains molecules

13.

What is the monomer for a lipid?

a)

monosaccharide

b)

glycerol and fatty acid

c)

amino acids

d)

nucleic acid

14.

What is the name of this macromolecule?

a)

protein

b)

carbohydrate

c)

lipid

d)

nucleic acid

15.

What is the main function of this macromolecule?

a)

Insolation, and components of the cell membrane

b)

quick energy

c)

structure muscles and growth.

d)

storage of genetic information

16.

Tap on all the pictures of ACTIVE transport.

A
B
C
D
E
F
17.

The movement of materials that requires energy is called...

a)

active transport

b)

passive transport

c)

massive transport

d)

proactive transport

18.

The movement of materials from an area of low concentration to an area of high concentration would require...

a)

glucose

b)

energy (ATP)

c)

fish

d)

chips

19.

Choose the image(s) below that represent(s) passive transport

A
B
C
D
E
F
20.

Tap on all the pictures of PASSIVE transport.

A
B
C
D
E
F
21.

categorize each term in regards to transport

Categorize the following

No energy needed

uses energy

needs ATP

No ATP needed

small molecules

large molecules

with the gradient

against the gradient

Passive Transport
Active Transport
22.

Which of the following happen naturally moving substances from high concentration to low concentration?

a)

Diffusion

b)

Osmosis

c)

Facilitated diffusion

d)

Active Transport

e)

A & B

23.

What is the term for maintaining equilibrium within your body(cell) despite the external forces outside you body (cell)?

a)

Osmosis

b)

Diffusion

c)

Homeostasis

d)

Transport

24.
A molecule that diffuses down a concentration gradient goes from an area of ______ concentration into an area of ______ concentration.
a)
high, low
b)
low, high
c)
passive, active
d)
active, passive
25.
The diffusion of water is known as _________
a)
active transport
b)
facilitated diffusion
c)
osmosis
d)
pinocytosis
26.
Diffusion is the movement of molecules from an area of _____________ concentration.
a)
low to high
b)
high to low
c)
equal to high
d)
all of these
27.
A membrane that allows some substances to pass across and others not is called ______________.
a)
non-permeable
b)
permeable
c)
semi-permeable
d)
permanently permeable
28.

In an isotonic solution which way will the water flow

a)

it will not flow at all

b)

it will flow into the cell

c)

it will flow both ways at equal rates

d)

out of the cell

29.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
30.
Osmosis is the movement of _____ across a membrane.
a)
food
b)
energy
c)
oxygen
d)
water
31.
Permeable means
a)
things can pass through
b)
the concentration levels are different
c)
it is permanent
d)
things are stuck
32.
The diffusion of water through a semi-permeable membrane is called?
a)
Osmosis
b)
Cell wall
c)
Diffusion
d)
Respiration
33.
What a cell needs to transport particles by active transport?
a)
Sun
b)
Wind
c)
Energy
d)
Channels
34.
When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of
a)
Osmosis
b)
Diffusion
c)
Equilibrium
35.
A person should never drink salty water because their cells would
a)
shrink
b)
expand
36.
Passive transport requires no
a)
concentration gradients
b)
osmosis
c)
motion
d)
energy
37.
The movement of molecules against a concentration gradient
a)
simple diffusion
b)
facilitated diffusion
c)
active transport
d)
osmosis
38.
Active transport...
a)
... includes diffusion
b)
... requires energy
c)
... is limited to only things leaving the cell
d)
... is limited to only things entering the cell
39.
Which is not a type of active transport?
a)
Receptor-mediated endocytosis
b)
Pinocytosis
c)
Sodium potassium pump
d)
Facilitated diffusion
40.
This cellular structure helps organisms maintain homeostasis by controlling what substances may enter or leave cells.
a)
vacuole
b)
nucleus
c)
cell membrane
d)
cell wall
41.
What are two types of passive transport?
a)
endo and exocytosis 
b)
in a minute and later
c)
hydrophobic and hydrophillic 
d)
osmosis and diffusion
42.
Special proteins help move particles, but NO energy is needed. This is..
a)
facilitated diffusion
b)
exocytosis
c)
active transport
d)
equilibrium
43.
This process is known as ________ transport.
a)
passive
b)
active
c)
protein
d)
temporary
44.
Against the concentration gradient, from low to high, uses ATP; this decribes.....
a)
facilitated diffusion
b)
osmosis
c)
active transport
d)
simple diffusion
45.

Movement of SOLUTE through the cell membrane from high to low concentration is called.....

a)

diffusion

b)

active transport

c)

facilitated diffusion

d)

osmosis

46.
During osmosis
a)
water moves from high to low concentration
b)
large or oddly shaped molecules move across a cell membrane
c)
water moves when energy is used
d)
proteins are built
47.

The molecules spread out until the _________________ of red molecules is the same throughout the container.

a)
osmosis
b)

concentration

c)
diffusion
d)

concentration gradient

48.
Where is there a low concentration of dye?
a)
at the bottom of cup
b)
in the color
c)
at the top of cup 
d)
no concenteraion gradient
49.

What is positive feedback in homeostasis?

a)

Positive feedback in homeostasis is a self-correcting mechanism that brings the body back to its normal range.

b)

Positive feedback in homeostasis is a mechanism that decreases the change or deviation from the normal range.

c)

Positive feedback in homeostasis is a mechanism that has no effect on the body's normal range.

d)

Positive feedback in homeostasis is a self-reinforcing mechanism that amplifies or increases the change or deviation from the normal range.

50.

Give an example of positive feedback in homeostasis.

a)

Shivering.

b)

Blood clotting.

c)

Sweating.

d)

Childbirth

51.

How does positive feedback affect the body's response to a stimulus?

a)

Inhibits

b)

Decreases

c)

Amplifies

d)

Neutralizes

52.

What is negative feedback in homeostasis?

a)

Regulatory mechanism that counteracts changes from the normal set point

b)

Process that has no effect on changes from the normal set point.

c)

Regulatory mechanism that promotes changes from the normal set point.

d)

Process that amplifies changes from the normal set point.

53.

Provide an example of negative feedback in homeostasis.

a)

Sweating

b)

Constriction of blood vessels

c)

Increased heart rate

d)

Shivering

54.

Explain how negative feedback helps maintain homeostasis.

a)

Negative feedback only occurs in certain body systems and does not contribute to overall homeostasis.

b)

Negative feedback counteracts changes and deviations from the desired set point to maintain homeostasis.

c)

Negative feedback has no effect on maintaining homeostasis.

d)

Negative feedback amplifies changes and deviations from the desired set point to maintain homeostasis.

55.

Describe the role of negative feedback in temperature regulation.

a)

Negative feedback in temperature regulation has no effect on body temperature.

b)

Negative feedback in temperature regulation causes changes in body temperature.

c)

Negative feedback in temperature regulation only occurs in extreme temperatures.

d)

Negative feedback in temperature regulation helps maintain homeostasis by counteracting changes in body temperature.

56.

How does positive feedback differ from negative feedback in homeostasis?

a)

Positive feedback decreases, while negative feedback increases.

b)

Positive feedback inhibits, while negative feedback promotes.

c)

Positive feedback amplifies, while negative feedback counteracts.

d)

Positive feedback stabilizes, while negative feedback disrupts.

57.

Why is it important for the body to have both positive and negative feedback mechanisms?

a)

To disrupt homeostasis and cause dysfunction in the body.

b)

To only have positive feedback mechanisms and ignore negative feedback.

c)

To rely solely on negative feedback mechanisms and ignore positive feedback.

d)

To maintain homeostasis and ensure proper body function.

58.

What is homeostasis?

a)

the process of maintaining relatively stable internal conditions

b)

All the physical and chemical changes occurring in an organism

c)

the process of becoming bigger

d)

Movement of substances throughout the body

59.

Maintaining glucose levels in the body through the day is an example of this being used:

a)

chloroplasts

b)

organic materials

c)

predation

d)

feedback mechanisms

60.

Guard cells changing the size of leaf openings, regulating the exchange of gas is an example of

a)

excretion

b)

carbon dioxide

c)

diffusion

d)

feedback mechanism

61.

This is important in the body because it keeps the internal body environment in the normal range.

a)

coordination

b)

circulation

c)

heterotrophic nutrition

d)

Feedback interactions

62.

What will happen if sugar levels are thrown off after a meal?

a)

The body will produce more salt

b)

the body will have an infection

c)

the body will remove oxygen

d)

The body make adjustment to restore homeostasis

63.

Why is an increased pulse rate after exercise good a good thing?

a)

The blood moves carbon dioxide into the muscle cells

b)

The blood moves oxygen away from muscle cells

c)

the blood moves salt into the muscle cells

d)

an increased blood flow carries excess waste products away from muscle cells

64.

maintain stable internal environment

a)

receptor

b)

type 2 diabetes

c)

homeostasis

d)

insulin

65.

reverses the direction of change

a)

positive feedback

b)

effector

c)

hypothalamus

d)

negative feedback

66.

increases or speeds up original change

a)

negative feedback

b)

positive feedback

c)

endotherm

d)

ectotherm

67.
When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.
a)
Positive Feedback Response
b)
Negative Feedback Loop 
68.
When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 
a)
Positive Feedback Response
b)
Negative Feedback Loop 
69.
Maintaining body temperature is an example of a:
a)
negative feedback loop
b)
positive feedback loop
70.
The two types of feedback systems that help organisms maintain homeostasis are:
a)
positive and negative 
b)
receptor and effector
c)
static and dynamic
d)
minor and major
71.
Homeostasis in the human body is often maintained by a: 
a)
neutral feedback loop 
b)
solar feedback loop
c)
positive feedback loop
d)
negative feedback loop
72.

How does your body maintain homeostasis when you are exercising?

a)

Your body starts to digest your food.

b)

Your heart rate increases to pump more blood to your muscles and you sweat to cool down your temperature.

c)

Your body decreases your heart rate and you start to breathe less.

d)

Your body develops a fever to fight off an infection.

73.

How do you maintain homeostasis when you are thirsty?

a)

You go swimming

b)

You exercise

c)

You eat food

d)

You drink water

74.

A change that causes a response is a ...

a)

behavior

b)

instinct

c)

stimulus

d)

hibernation

75.
Homeostasis...
a)
A stimulus from inside an organism
b)
How an organism reacts to a change
c)
The ability to maintain a stable internal environment (type of equilibrium or balance)
d)
A stimulus from outside an organism
76.

Animals respond to changes to maintain ______________.

a)

behavior

b)

internal stimuli

c)

external stimuli

d)

homeostasis

77.

What is the most likely response to a hot temperature environment?

a)

Shivering

b)

Goosebumps

c)

Sweating

d)

Fever

78.

Which of these is an example of a plant responding to an internal stimulus?

a)

a leaf wilting because of lack of water

b)

the stem of a sunflower bending toward light

c)

a leaf closing when a bee brushes against it

d)

the roots of a tree growing downward, in the direction of gravity

79.
_______ regulates what enters and leaves a cell.  
a)
Cell Membrane
b)
Nucleus
c)
Mitochondria
d)
Cytoplasm
80.

A person would never have pure water put into their veins in a hospital because their cells would...

a)

Shrink/Dehydrate

b)

Expand

c)

Stay the same

81.

If there is 5 percent water inside a cell and 5 percent water outside a cell

a)

more water will move inside the cell

b)

more water will move outside the cell

c)

There will be no net movement of water, it moves into and out of the cell at the same time.

82.
An animal cell placed in a hypertonic (salty) solution will
a)
Shrink
b)
Swell
c)
Stay the same
83.
Ideally, your cells should be in a(n) _______ solution
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
d)
Cola
84.

Where will the water go?

a)

Into the cell

b)

Out of the cell

c)

Equally in & out - it's isotonic

d)

There is no water

85.

A blood cell is placed into the jar, as seen. Where will the water go?

a)

Into the cell

b)

Out of the cell

c)

Equally in & out - it's isotonic

d)

The water is a lie

86.

Why can't you drink salt water?

a)

It's hypertonic to your cells

b)

It's hypotonic to your cells

c)

It's isotonic to your cells

d)

It's paratonic to your cells

87.

When you are hot you....

a)

sweat

b)

shiver

c)

get goosebumps

d)

hairs stand up on arm

88.

When you are cold you...

a)

shiver to create heat

b)

sweat

c)

blood vessels dilate

d)

increase heart rate

89.
Failure to maintain homeostasis could result in:
a)
lack of internal balance
b)
eventual death
c)
difficulty carrying on metabolism 
d)
all three
90.

A freshwater snail is placed in a saltwater environment. What would most likely happen?

a)

water would move out of the snail cells

b)

water would move into the snail cells

c)

salt would move into the snail cells

d)

salt would move out of the snail cells

91.

A saltwater plant is placed in a freshwater environment. What would most likely happen?

a)

water would move out of the plant cells

b)

water would move into the plant cells

c)

salt would move into the plant cells

d)

salt would move out of the plant cells

92.

Why do plants close their stomata?

a)

To capture more sunlight

b)

To increase water loss

c)

To reduce water loss

d)

To attract more carbon dioxide

93.

Which of the following is a way plants maintain homeostasis?

a)

By moving to shaded areas

b)

By opening and closing their stomata

c)

By increasing their body temperature

d)

By consuming nutrients from animals

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