WorksheetsA.4 Homeostasis and Transport
Total questions: 14
Worksheet time: 7mins
Name
Class
Date
1.
Carbon dioxide and oxygen are molecules that can move freely across a plasma membrane. What determines the direction that carbon dioxide and oxygen molecules move?
a)
Orientation of cholesterol in the plasma membrane.
b)
Concentration gradient across the plasma membrane.
c)
Configuration of phospholipids in the plasma membrane.
d)
Location of receptors on the surface of the plasma
2.
Which example is an activity that a fish most likely uses to maintain homeostasis within its body?
a)
Using camouflage to avoid predators.
b)
Feeding at night to regulate body temperature.
c)
Moving to deeper water to regulate metabolic wastes.
d)
Exchanging gases through its gills to regulate oxygen levels.
3.
In the following sugar-water solution, which has been separated by a semi-permeable membrane, which side is HYPOTONIC?
a)
Left side
b)
Right side
4.
If osmosis were to take place, which way would water move?
a)
To the right
b)
To the left
c)
Water does not move during osmosis
5.
The following diagram best represents:
a)
Active transport, in which charged ions, such as sodium and potassium, move against their concentration gradient; energy is required
b)
Facilitated diffusion, in which large molecules such as glucose move down their concentration gradient by way of a protein channel; no energy is required.
c)
Simple Diffusion, in which molecules such as oxygen and carbon dioxide, move down their concentration gradient; no energy is required.
d)
Endocytosis, in which large molecules are engulfed by a cell by infoldings of the membrane; energy is required.
e)
Exocytosis, in which large molecules are expelled from the cell through the use of a vesicle; energy is required.
6.
The following diagram best represents:
a)
Active transport, in which charged ions, such as sodium and potassium, move against their concentration gradient; energy is required
b)
Facilitated diffusion, in which large molecules such as glucose move down their concentration gradient by way of a protein channel; no energy is required.
c)
Simple Diffusion, in which molecules such as oxygen and carbon dioxide, move down their concentration gradient; no energy is required.
d)
Endocytosis, in which large molecules are engulfed by a cell by infoldings of the membrane; energy is required.
e)
Exocytosis, in which large molecules are expelled from the cell through the use of a vesicle; energy is required.
7.
The following diagram best represents:
a)
Active transport, in which charged ions, such as sodium and potassium, move against their concentration gradient; energy is required
b)
Facilitated diffusion, in which large molecules such as glucose move down their concentration gradient by way of a protein channel; no energy is required.
c)
Simple Diffusion, in which molecules such as oxygen and carbon dioxide, move down their concentration gradient; no energy is required.
d)
Endocytosis, in which large molecules are engulfed by a cell by infoldings of the membrane; energy is required.
e)
Exocytosis, in which large molecules are expelled from the cell through the use of a vesicle; energy is required.
8.
The following diagram best represents:
a)
Active transport, in which charged ions, such as sodium and potassium, move against their concentration gradient; energy is required
b)
Facilitated diffusion, in which large molecules such as glucose move down their concentration gradient by way of a protein channel; no energy is required.
c)
Simple Diffusion, in which molecules such as oxygen and carbon dioxide, move down their concentration gradient; no energy is required.
d)
Endocytosis, in which large molecules are engulfed by a cell by infoldings of the membrane; energy is required.
e)
Exocytosis, in which large molecules are expelled from the cell through the use of a vesicle; energy is required.
9.
The following diagram best represents:
a)
Active transport, in which charged ions, such as sodium and potassium, move against their concentration gradient; energy is required
b)
Facilitated diffusion, in which large molecules such as glucose move down their concentration gradient by way of a protein channel; no energy is required.
c)
Simple Diffusion, in which molecules such as oxygen and carbon dioxide, move down their concentration gradient; no energy is required.
d)
Endocytosis, in which large molecules are engulfed by a cell by infoldings of the membrane; energy is required.
e)
Exocytosis, in which large molecules are expelled from the cell through the use of a vesicle; energy is required.
10.
Cell transport is regulated by the movement of materials across the cell membrane. Which statement DOES NOT accurately describe the nature of the cell membrane?
a)
The cell membrane is made up of carbohydrates, proteins, and phospholipids.
b)
The cell membrane is selectively permeable - only allowing certain materials to pass through.
c)
The cell membrane is rigid with phospholipids fixed in place to act as a strong barrier.
d)
Cholesterol located within the lipid bilayer acts as a stabilizer and helps to maintain the integrity of the cell's structure.
11.
Lungs and capillaries both have porous linings that allow certain substances to move into or out of the structures. Which function do these porous linings most likely serve in living organisms?
a)
heat release
b)
gas exchange
c)
carbohydrate absorption
d)
osmotic pressure regulation
12.
Which statement best describes a function of the proteins embedded in the plasma membrane of cells?
a)
They provide instructions for the processes in the cell.
b)
They attract charges in the cell’s environment to give the cell a net charge.
c)
They store the energy required by the rest of the membrane to perform its functions.
d)
They selectively allow certain particles into and out of the cell.
13.
Which of the following is most involved in providing structure for a plasma membrane?
a)
the types of carbohydrates attached to proteins on the surface
b)
the types of proteins that are attached to the surface of the membrane
c)
the arrangement of the hydrophobic and hydrophilic ends of the phospholipids
d)
the number of protein channels embedded in the membrane
14.
The shivering mechanism in bumblebees often serves the same purpose as it does in mammals. During which condition will the action of shivering most help a bumblebee to maintain homeostasis?
a)
decrease in available oxygen
b)
low environmental temperature
c)
uncontrolled rise in core temperature
d)
depletion of oxygen in muscle tissues
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