Homeostasis and the Cell Membrane

2

Basic I—Matching: Match the part of the cell membrane with description. (½ pt each).

Stavka koja se može prevući		Odgovarajuća stavka
Channel		Acts as a boundary: BARRIER, and allows small materials to move in and out: TRANSPORT
Marker		Allows large materials to move in and out: TRANSPORT
Phospholipid		Receives messages that direct cell work and receives like a lock and key message: COMMUNICATION
Receptor		Identifies the cell--like a nametag, important for the immune system: COMMUNICATION

1

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).
Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

Metabolism

Reproduction

Homeostasis

Heredity

1

When materials diffuse, they:

move from high to low concentration

require energy

always need the help of a channel protein

1

A cell moves particles from a region of lower concentration to a region of higher concentration by ________________ with the use of ATP energy?

facilitated diffusion

passive transport

osmosis

active transport

1

The movement of material across the membrane during diffusion stops when:

all the materials have passed through the cell membrane

All the materials have been stored in a vesicle.

there is a balance reached on both sides of the membrane

the cell uses energy to stop it

1

The cell membrane contains channels and receptors that help move materials from one side to the other. What are these channels made of?

carbohydrates

lipids

bilipids

proteins

1

Osmosis is the movement of________.

salt

oxygen

water

sugar

2

For each beaker below, decide which direction the material (water, sugar or salt in the beaker solution) will diffuse. Circle either INTO the cell or OUT of the cell for each beaker.

2

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:
Calculate the amount of solutes present in the solution.
Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

1

Which Trial shows the result of the potato cells in an ISOTONIC solution?

X

Y

Z

1

you chose your answer for #10 because...

1

2

When looking under the microscope, potato cells looked similar to Fig 1.
In the circles below, sketch what the potato cell may look like after being placed in each solution.

5

Advanced: Creating and Explaining Diagrams ( 3pts)
Draw a cross section of cell membrane in the space below. Include these items:
Draw tails on the phosphate heads
Add 2 channel proteins
Add 1 receptor protein
Label the cytoplasm
Label the hydrophobic area
Label the hydrophilic area
Add to your diagram. (2pts)
1. Carbon dioxide
Add CO2 to your diagram using ▲s. Distribute the CO2 so that the molecule will diffuse out of cell.
Draw an arrow and label the arrow to show which part of cell membrane the CO2 molecule would pass through.
2. Glucose
Add GLUCOSE to your diagram using ⬡s. Distribute the GLUCOSE so that the molecule will diffuse into the cell.
Draw an arrow to show which part of cell membrane the glucose molecule would pass through.

1

Homeostasis and the Cell Membrane

Basic I—Matching: Match the part of the cell membrane with description. (½ pt each).

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).
Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

When materials diffuse, they:

A cell moves particles from a region of lower concentration to a region of higher concentration by ________________ with the use of ATP energy?

The movement of material across the membrane during diffusion stops when:

The cell membrane contains channels and receptors that help move materials from one side to the other. What are these channels made of?

Osmosis is the movement of________.

For each beaker below, decide which direction the material (water, sugar or salt in the beaker solution) will diffuse. Circle either INTO the cell or OUT of the cell for each beaker.

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:
Calculate the amount of solutes present in the solution.
Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

Which Trial shows the result of the potato cells in an ISOTONIC solution?

you chose your answer for #10 because...

When looking under the microscope, potato cells looked similar to Fig 1.
In the circles below, sketch what the potato cell may look like after being placed in each solution.

Draw exocytosis below and explain when it would be used.

Basic I—Matching: Match the part of the cell membrane with description. (½ pt each).

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).
Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

When materials diffuse, they:

A cell moves particles from a region of lower concentration to a region of higher concentration by ________________ with the use of ATP energy?

The movement of material across the membrane during diffusion stops when:

The cell membrane contains channels and receptors that help move materials from one side to the other. What are these channels made of?

Osmosis is the movement of________.

For each beaker below, decide which direction the material (water, sugar or salt in the beaker solution) will diffuse. Circle either INTO the cell or OUT of the cell for each beaker.

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:
Calculate the amount of solutes present in the solution.
Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

Which Trial shows the result of the potato cells in an ISOTONIC solution?

you chose your answer for #10 because...

Which Trial shows the result of the potato cells in a HYPOTONIC solution?

You chose your answer for #12 because...

When looking under the microscope, potato cells looked similar to Fig 1.
In the circles below, sketch what the potato cell may look like after being placed in each solution.

Draw exocytosis below and explain when it would be used.

Which Trial shows the result of the potato cells in a HYPOTONIC solution?

You chose your answer for #12 because...

Homeostasis and the Cell Membrane

Homeostasis and the Cell Membrane

Basic I—Matching: Match the part of the cell membrane with description. (½ pt each).

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

When materials diffuse, they:

A cell moves particles from a region of lower concentration to a region of higher concentration by ________________ with the use of ATP energy?

The movement of material across the membrane during diffusion stops when:

The cell membrane contains channels and receptors that help move materials from one side to the other. What are these channels made of?

Osmosis is the movement of________.

For each beaker below, decide which direction the material (water, sugar or salt in the beaker solution) will diffuse. Circle either INTO the cell or OUT of the cell for each beaker.

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:Calculate the amount of solutes present in the solution.Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

Which Trial shows the result of the potato cells in an ISOTONIC solution?

you chose your answer for #10 because...

When looking under the microscope, potato cells looked similar to Fig 1. In the circles below, sketch what the potato cell may look like after being placed in each solution.

Draw exocytosis below and explain when it would be used.

Basic I—Matching: Match the part of the cell membrane with description. (½ pt each).

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

When materials diffuse, they:

A cell moves particles from a region of lower concentration to a region of higher concentration by ________________ with the use of ATP energy?

The movement of material across the membrane during diffusion stops when:

The cell membrane contains channels and receptors that help move materials from one side to the other. What are these channels made of?

Osmosis is the movement of________.

For each beaker below, decide which direction the material (water, sugar or salt in the beaker solution) will diffuse. Circle either INTO the cell or OUT of the cell for each beaker.

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:Calculate the amount of solutes present in the solution.Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

Which Trial shows the result of the potato cells in an ISOTONIC solution?

you chose your answer for #10 because...

Which Trial shows the result of the potato cells in a HYPOTONIC solution?

You chose your answer for #12 because...

When looking under the microscope, potato cells looked similar to Fig 1. In the circles below, sketch what the potato cell may look like after being placed in each solution.

Draw exocytosis below and explain when it would be used.

Which Trial shows the result of the potato cells in a HYPOTONIC solution?

You chose your answer for #12 because...

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).
Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:
Calculate the amount of solutes present in the solution.
Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

When looking under the microscope, potato cells looked similar to Fig 1.
In the circles below, sketch what the potato cell may look like after being placed in each solution.

Basic II—Multiple Choice: Select the best answer from the choices below (1 pt each).
Which of the seven criteria of life is the cell membrane MOST ESSENTIAL for maintaining?

Proficient I—Diffusion: Water, sugar and salt are able to be transported across the membrane. Complete the diagram for a cell below:
Calculate the amount of solutes present in the solution.
Use and label arrows to illustrate which substance(s) is/are moving into or out of the cell.

When looking under the microscope, potato cells looked similar to Fig 1.
In the circles below, sketch what the potato cell may look like after being placed in each solution.