Quiz about Homeostasis and the Plasma Membrane

Question 1

What type of feedback loop is shown?

Accepted Answer

Negative

Answer

Positive

Answer

Neutral

Question 2

The reaction/effect of a given stimulus is the...

Accepted Answer

response

Answer

stimulus

Answer

cause

Answer

result

Question 3

The event that causes something to happen is the

Accepted Answer

stimulus

Answer

response

Answer

effect

Answer

homeostasis

Question 4

What type of feedback loop is shown?

Accepted Answer

positive

Answer

negative

Answer

neutral

Question 5

Failure to maintain homeostasis could result in:

Accepted Answer

all three

Answer

lack of internal balance

Answer

eventual death

Answer

difficulty carrying on metabolism

Question 6

The two types of feedback systems that help organisms maintain homeostasis are:

Accepted Answer

positive and negative

Answer

receptor and effector

Answer

static and dynamic

Answer

minor and major

Question 7

Maintaining body temperature is an example of a:

Accepted Answer

negative feedback loop

Answer

positive feedback loop

Question 8

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.

Accepted Answer

Negative Feedback Loop

Answer

Positive Feedback Response

Question 9

What is the point of a feedback loop?

Accepted Answer

To make sure the conditions in the body remain stable

Answer

To provide the body with more energy

Answer

To provide the body with more food

Answer

To make sure the conditions in the body are always changing

Question 10

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.

Accepted Answer

Positive Feedback Response

Answer

Negative Feedback Loop

Question 11

Select ALL that are examples of positive feedback loops (tries to increase the response-only happens sometimes)

Accepted Answer

enhancing labor contractions during birth

Accepted Answer

Apples release ethylene while ripening - other apples near start ripening too

Answer

Blood pressure falls - blood pressure receptors stimulated - heart rate increases - rise in blood pressure

Answer

Body temperature rises - body starts sweating - body temperature drops

Question 12

What is the purpose of negative feedback?

Accepted Answer

To REDUCE a change to bring the body back to normal state

Answer

To INTENSIFY a change

Answer

To regulate blood sugar

Answer

To cause contractions during childbirth

Question 13

What happens in positive feedback?

Accepted Answer

The variable is intensified

Answer

The variable is counteracted

Answer

The body temperature decreases

Answer

The body temperature increases

Question 14

What is an example of positive feedback?

Accepted Answer

Causing contractions during childbirth

Answer

Sweating to cool down in hot weather

Answer

Shivering to generate heat in cold weather

Answer

Increasing blood glucose levels

Question 15

When a response to an event increases the likelihood of the event to continue (strengthens the original stimulus).

Accepted Answer

Positive Feedback

Answer

Negative Feedback

Answer

Homeostasis

Question 16

Select ALL that are examples of negative feedback loops (reverses changes and is happening 24/7, every second of an organisms life)

Accepted Answer

Blood pressure falls - blood pressure receptors stimulated - heart rate increases - rise in blood pressure

Accepted Answer

Body temperature rises - body starts sweating - body temperature drops

Answer

enhancing labor contractions during birth

Answer

Apples release ethylene while ripening - other apples near start ripening too

Question 17

The variable that the experimenter intentionally change in an experiment.

Accepted Answer

independent

Answer

dependent

Answer

control

Answer

constant

Question 18

The variable on the x- axis of a graph

Accepted Answer

independent

Answer

dependent

Answer

control

Answer

constant

Question 19

Things you keep the same in an experiment

Accepted Answer

constants

Answer

dependent variables

Answer

independent variables

Answer

controls

Question 20

Sam wants to see if feeding his dog MaxPro will make it swim faster than the regular dog food. What is the dependent variable?

Accepted Answer

Swimming speed

Answer

MaxPro

Answer

Sam

Answer

There is not enough information given

Question 21

Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.

What is her independent variable?

Accepted Answer

Nitrogen infused soil

Answer

Regular soil

Answer

How tall the plants grow

Answer

The plant in the bathroom

Question 22

Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.

What is the dependent variable?

Accepted Answer

The height of the plants

Answer

The regular soil

Answer

The nitrogen infused soil

Answer

The plant in the bathroom

Question 23

This is the variable that is measured in an experiment.

Accepted Answer

dependent

Answer

independent

Answer

control

Answer

constant

Question 24

This is used for comparison in an experiment

Accepted Answer

control

Answer

independent variable

Answer

dependent variable

Answer

constant

Question 25

This variable goes on the y-axis on a graph

Accepted Answer

dependent

Answer

independent

Answer

constant

Answer

control

Question 26

Which type of biological macromolecule is the main component of the plasma membrane?

Accepted Answer

lipid

Answer

carbohydrate

Answer

protein

Answer

nucleic acid

Question 27

This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?

Accepted Answer

the lipid "tails"

Answer

the phosphate "head"

Question 28

This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHILIC?

Accepted Answer

the phosphate "head"

Answer

the lipid "tails"

Question 29

Where can carbohydrates be found when part of a plasma membrane?

Accepted Answer

On the outside of the membrane

Answer

On the inside of the membrane

Answer

Embedded part of the way into the membrane

Answer

Embedded the whole way through the membrane

Answer

All of the above

Question 30

Define plasma membrane

Accepted Answer

flexible boundary of a cell that separates a cell from its surroundings

Answer

lipid that helps minimize effects of temperature

Answer

only on the outer surface of the plasma membrane and are attached to proteins or lipids; form distinctive cellular markers

Answer

may extend partway into the plasma membrane, cross the membrane entirely, or be loosely attached to its inside or outside face

Question 31

Which type of biological macromolecule is the main component of the plasma membrane?

Accepted Answer

lipid

Answer

carbohydrate

Answer

protein

Answer

nucleic acid

Question 32

What is the "big idea" of the fluid mosaic model of plasma membranes?

Accepted Answer

a plasma membrane is a MOSAIC of components that move FREELY and FLUIDLY.

Answer

the plasma membrane creates a specialized FLUID that looks like a MOSAIC.

Answer

the plasma membrane is a MOSAIC.

Answer

the fluid mosaic model is NOT related to the plasma membrane.

Question 33

What does "hydrophobic" mean?

Accepted Answer

water fearing, does not associate with water

Answer

water loving, associates with water

Answer

a world war II submarine

Answer

an example would be solutes like sugar or salt

Question 34

What does "hydrophilic" mean?

Accepted Answer

water loving, associates with water

Answer

water fearing, does not associate with water

Answer

a world war II submarine

Answer

an example would be solutes like oil or fat

Question 35

Identify the structure labeled A.

Accepted Answer

Phospholipid Bilayer

Answer

Carbohydrates

Answer

Phosopholipid

Answer

Cholesterol

Question 36

Identify the structure labeled B.

Accepted Answer

Carbohydrates

Answer

Phosopholipid

Answer

Phospholipid Bilayer

Answer

Cholesterol

Question 37

Identify the structure labeled C.

Accepted Answer

Extrinsic Protein

Answer

Carbohydrates

Answer

Phosopholipid

Answer

Intrinsic Protein

Question 38

Identify the structure labeled E.

Accepted Answer

Intrinsic Protein

Answer

Carbohydrates

Answer

Phosopholipid

Answer

Extrinsic Protein

Question 39

Identify the structure labeled D.

Accepted Answer

Phosopholipid

Answer

Carbohydrates

Answer

Cholesterol

Answer

Extrinsic Protein

Question 40

Identify the structure labeled F.

Accepted Answer

Cholesterol

Answer

Carbohydrates

Answer

Phosopholipid

Answer

Extrinsic Protein

Question 41

What is the function of B?

Accepted Answer

Cell to cell communication and cell recognition

Answer

Keeps the phospholipid tails from sticking together - allows for the fluidity of the cell membrane

Answer

Allow substances to enter and exit the cell

Answer

Provides structure to the cell memebrane

Question 42

What is the function of E?

Accepted Answer

Allow substances to enter and exit the cell

Answer

Cell to cell communication and cell recognition

Answer

Keeps the phospholipid tails from sticking together - allows for the fluidity of the cell membrane

Answer

Provides structure to the cell memebrane

Question 43

What is the function of C?

Accepted Answer

Provides structure to the cell memebrane

Answer

Cell to cell communication and cell recognition

Answer

Keeps the phospholipid tails from sticking together - allows for the fluidity of the cell membrane

Answer

Allow substances to enter and exit the cell

Question 44

What is the function of F?

Accepted Answer

Keeps the phospholipid tails from sticking together - allows for the fluidity of the cell membrane

Answer

Cell to cell communication and cell recognition

Answer

Allow substances to enter and exit the cell

Answer

Provides structure to the cell memebrane

Question 45

What is the meaning of hydro-?

Accepted Answer

water

Answer

cell

Answer

fearing

Answer

loving

Question 46

What is the meaning of -philic?

Accepted Answer

loving

Answer

cell

Answer

water

Answer

fearing

Question 47

What is the meaning of -phobic?

Accepted Answer

fearing

Answer

cell

Answer

water

Answer

loving

Question 48

What is the meaning of homeo-?

Accepted Answer

same

Answer

balance

Answer

fearing

Answer

loving

Question 49

What is the meaning of -stasis?

Accepted Answer

balance

Answer

same

Answer

fearing

Answer

loving

Homeostasis and the Plasma Membrane

52 questions

What type of feedback loop is shown?

The reaction/effect of a given stimulus is the...

The event that causes something to happen is the

What type of feedback loop is shown?

Failure to maintain homeostasis could result in:

The two types of feedback systems that help organisms maintain homeostasis are:

Maintaining body temperature is an example of a:

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.

What is the point of a feedback loop?

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.

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