Science 10

Part 2: Cell Structures and Organelles

Name: Assignment: /

Date Assigned: Module lab: /10

Date Due: Total: /

Date Handed In:

Date Marked:

Redos:

Signatures:

Teacher:

Student:Date:

How Do Cells Move Matter Around?

I recognize that the cell is an open system (not a closed or isolated system) that acquires nutrients, excretes waste, and exchanges matter and energy

I can compare different ways cells use to move nutrients and wastes.

This means I can describe the similarities and differences between active transport and passive transport.

I can compare the types of transport in a cell by correctly using the terms

particle theory of matter

concentration gradients

equilibrium

protein carrier molecules

I can use models to explain complicated processes like

diffusion and osmosis

endocyctosis and exocytosis

the role of cell membrane in these processes

I can recognize all of the different organelles in a cell, and describe what each one does and why it is important to keeping the cell alive.

Science 10Unit C: Cycling Matter in Living Systems

4/23/2010

Date __________________________Name ____________________________

Cell Model Project

For this assignment you will make:

a 3-D model of a generalized plant or animal cell

OR you may decide to devise a model of a specialized type of cell (such as phloem or parenchyma plant cells; nerve or muscle animal cells)

OR you may wish to design a single celled organism (such as an Amoeba, Paramecium, or Euglena).

You need to make sure that it is a 3D model and not a drawing of a cell. Your cell needs to be creative.

1. On your cell you need to indicate and label the following structures (proportionally sized):

BASIC NINE (must have)

ADDITIONAL (depending on your cell type)

cell membrane

cell wall

cytoplasm

centriole

nucleus

chloroplasts

mitochondria

cilia , flagella

Golgi apparatus

lysosomes

ribosomes

other cell organelles and /or structures that apply to your specialized cell or single celled organism.

rough endoplasmic reticulum

smooth endoplasmic reticulum

vacuoles

2. Your model can be no larger than 12"x12"x8". If your cell is made out of food it must be photographed before it is eaten so it will not become a temptation for big and little critters or it may spoil or disappear before I get it graded.

3. Label the whole model as a plant or animal cell. IF you have decided to design a specialized cell, also identify the type of cell or the name of the single celled organism. Your model must be strong enough to be gently handled and hold up on its own.

4. Label the parts of the cell. To label you can glue the label onto the part, use "lines" to point to the part, make a key, etc.

5. You also need to turn a short written report about the functions of the cell parts. These functions MUST be in your own words and not copied from some source. Include close up pictures, diagrams, etc. to give the complete function and tell how the structures may relate to other parts in the cell. No cell part works in complete isolation from the other parts! They all work together, somehow. You WILL have to do some extra research online, or in other books in the classroom your textbook is not good at this section.

6. Present the model to your teacher. Give a complete verbal description of each organelle, including the complete function, and how it interacts with other organelles in the cell. This is the same information as in your written report, but I want you to prove to me that you remember it, and that you understand it well enough to teach someone else.

Science 10 Model of a CellName:

RubricDue Date:

Category

WOW

Yes!

Yes, but

We can work on this.

I cant give you a mark.

Accuracy of the model

The organelles details are all well labeled & represented & very accurate. 12 cell parts.

All of the organelles are represented; most accurately. 10 cell parts.

The basic 9 organelles are represented; some of them accurately

A few of the organelles represented accurately, few labels

There is no model or the organelles are completely wrong no labels

Written Report

Neat, complete functions showing ties to the rest of the cell.

Neat, complete functions

Good and fairly complete functions

Incomplete or very brief functions

Wrong or incomplete

Verbal Report

Neat, complete functions showing ties to the rest of the cell.

Neat, complete functions

Good and fairly complete functions

Incomplete or very brief functions

Wrong or incomplete

C2.1: The Cell as an Efficient, Open System

True or false (0.5 marks each).

_____ An open system is able to exchange matter with its surroundings.

_____ An open system is not able to exchange energy with its surroundings.

Which statement is true for both plant and animal cells?

They have a cell wall.

They have chloroplasts.

They have a Golgi apparatus.

They have centrioles.

The solvent that provides the environment for all biological reactions is

1. water

cytoplasm

nucleic acid

oxygen

The cell membrane consists of

1. two layers of lipids, each with a phosphate group attached

sugar molecules attached to a protein layer

two layers of carbohydrates attached to a lipid layer

a single layer of lipids with a phosphate group attached on each side

Another name for the cell membrane is

1. phospholipid bilayer membrane

fluid-mosaic membrane

lipid membrane

plasma membrane

Membrane-bound sacs in which digestion occurs are called

1. lysosomes

ribosomes

mitochondria

Golgi apparatus

Rod-like structures where reactions occur to convert chemical energy in sugars into energy the cell can use are called

1. lysosomes

ribosomes

mitochondria

Golgi apparatus

Which part of the cell receives substances from the endoplasmic reticulum and prepares them for transport out of the cell?

1. lysosomes

1. ribosomes

1. mitochondria

1. Golgi apparatus

Name the organelle that accomplishes each purpose (3 marks):

a series of small interconnected tubes that branch from the nuclear envelope

an organelle that contains the genetic material of the cell and directs all cell activities

a structure containing chlorophyll found in plants and some protists

a large, membrane-bound structure in a plant cell that causes the cell to become turgid when filled with water

a gel-like substance inside the cell membrane that contains the nutrients required by cells

a protective barrier for the cell

C2.2: The Role of the Cell Membrane in Transport

For the next group of questions, identify the type of transport that is shown by each statement. Choose from this list; you can use a word more than once:

active transport

endocytosis

exocytosis

facilitated diffusion

diffusion

osmosis

The movement of water across a cell membrane that does not require energy is called ____________________________

A white blood cell engulfing a bacterium is an example of __________________.

One of the methods that allow the cell to move particles against the concentration gradient is _____________________________.

Substances that are soluble in lipids can pass through the cell membrane by ________________________________________.

A process in which a vesicle fuses with the cell membrane then ruptures to expel wastes to the outside of the cell is ______________________________.

A hens egg with the shell dissolved is placed in a 10% salt solution. Relative to the interior of the egg, the salt solution is

1. hypotonic

isotonic

hypertonic

semi-permeable

When a substance moves across a cell membrane, the difference between active transport and passive transport is that :

1. one uses energy and the other does not

1. one is into the cell, and the other is out of the cell

1. one has a higher concentration in the cell, and the other has a higher concentration out of the cell

1. they move different types of molecules or particles

A membrane that allows only certain substances to pass through is a

1. porous membrane

transparent membrane

impermeable membrane

semi-permeable membrane

1. There are five statements below. Two of them are true; three of them are false. Decide which three statements are false, and re-write them to make them into true statements. (3 marks)

When a cell is put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane.

When a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell.

The movement of any solvent across a semi-permeable membrane is called osmosis.

Carrier proteins have the ability to change shape and physically move molecules across the cell membrane.

In facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is lower inside the cell.

C2.3: Applications of Cellular Transport

Proteins that stick out of the cell membrane and allow cells to recognize other cells or recognize foreign bodies, such as bacteria, are known as ________________ proteins.

Future treatment for diseases, such as HIV, involves

1. the removal of receptor proteins from the cell membrane

1. blocking recognition proteins on the HIV virus

1. blocking receptor proteins in the cell membrane

1. adding recognition proteins to the cell membrane

Gene therapy for cancer treatment involves

1. using liposomes to deliver medication to cancer cells

1. blocking receptor proteins in the cell membranes of cancer cells

1. using liposomes to introduce DNA to cancer cells so they produce toxins

1. using liposomes to introduce DNA to healthy cells so they do not become cancerous

When a healthy person eats something and digests it, their blood sugar goes up. Then, insulin goes to work to store the extra sugar until it is needed.

Read the following list of statements regarding insulin action in the body.

I. Insulin binds to receptor proteins.

II. Insulin is released by exocytosis.

III. Binding stimulates processes in the cell.

IV. Insulin travels through blood.

List these statements in the correct order, to describe what insulin does.

Water moves from an area of lower water concentration to an area of higher water concentration in

1. osmosis

1. diffusion

1. reverse osmosis

1. facilitated diffusion

Which statement regarding hemodialysis is true?

1. The dialysate fluid flows into the abdominal cavity through a catheter.

1. The blood is circulated out of the body for cleansing and then returned.

1. The patient is able to move around during the procedure.

1. Wastes move from a region of lower concentration to a region of higher concentration.

Use the following diagram to answer the next two questions.

Glucose molecules are much smaller than starch molecules, and they easily move across a cell membrane.

What will happen in Beaker A?

Nothing will happen.

Glucose will move from inside the dialysis tubing into the water.

Glucose will move into the dialysis tubing.

Water will move out of the dialysis tubing.

What will happen in Beaker B?

A. Nothing will happen.

B. Starch will move from inside the dialysis tubing into the water.

C. Starch will move into the dialysis tubing.

D. Water will move out of the dialysis tubing.

You can check if starch moves across the membrane by performing

A. an iodine test on the starch solution inside the membrane

B. an iodine test on the water outside the membrane

C. a glucose test on the water outside the membrane

D. a glucose test on the starch solution inside the membrane

C2.4: Is Bigger Better?

To operate efficiently, a cell must

B. be large

C. have an impermeable membrane

D. have a large surface area to volume ratio

E. have a small surface area to volume ratio

Which of the following is true about a larger cell?

F. More wastes must leave the cell.

G. More molecules must move through the membrane.

H. Distances from the cell membrane to various organelles are greater.

I. all of the above

To reduce the dependence on diffusion, multicellular organisms have

J. reduced cell size and the number of cells

K. developed thinner cell membranes

L. developed other internal transport systems

M. all of the above