G7 T2 W13 BIOLOGYCells continued

Plan of the WeekMonday/TuesdayQuiz-MondayReview drawings from WednesdayContinue on cell journey Workbook exercises—WB 1Drawing plant and animal cellsWednesdayComplete what we have not yet doneMake our edible cells—animal and plant!

Essential QuestionHow do plant and animal cells differ?

How are they similar?

Learning Objectives Identify the structures present in plant and animal cells as seen

with a simple light microscope and/or a computer microscope Draw and label animal and plant cells Explain simply the structure of animal and plant cells and make

a comparison Observe and recognize chloroplasts Recognize mitochondria and briefly state its role in aerobic

respiration Appreciate the three dimensional nature of the cell. Explain how cells are specialized according to their function. Give examples of specialized cells (sperm, egg, red and white

blood cells, neurone, root hair cell, palisade mesophyll cell) and explain how they are adapted for their function

QuizDraw a picture of a microscope using the

model shown on the next slide.Label the parts as indicated

Draw the microscope and label the parts shown

1.

3.

2.

4. 5.

6.

7.

Q 2Plant and animal cells have 3 parts in

common. What are they?A. cell membrane, cytoplasm, nucleusB. cell membrane, nucleus, chloroplastC. cell wall, nucleus, cytoplasmD. cytoplasm, nucleus and chloroplast

Q3Put the following in the correct order,

smallest to largestA. organ, organism, tissue, system, cellB. cell, system, organ, tissue, organismC. cell, tissue, organism, system, organD. cell, tissue, organ, system, organism

Glossary reviewLet’s take a look at the glossary we built

Let’s take a look….Let’s take a look

http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/cells_systems/activity/

Let’s do some practiceWB 1 P 11WB 1 P 12WB 1 P 13—you may need to look in your

book or the internet for these!Hand out P 1-3—completed I and D

DiamondLet’s think about the genetic material and DNA

question from yesterday.◦ Does DNA contain only genetic material?◦ Is this just for inheritance?◦ What is inheritance?◦ Do cells in our bodies die?◦ Where do the new cells come from?◦ How do they know what to do? Example, skin cells die and

are reproduced continuously—how do they know what their job is?

◦ Are we talking about a new ‘person’ or a new cell?◦ Are we saying the same thing?◦ What is hereditary?

DiamondQuestion: regarding DNA-how does this

substance affect the whole organism?

How do genes control the growth and division of cells?

A variety of genes are involved in the control of cell growth and division. The cell cycle is the cell’s way of replicating itself in an organized, step-by-step fashion. Tight regulation of this process ensures that a dividing cell’s DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes. The cycle has checkpoints (also called restriction points), which allow certain genes to check for mistakes and halt the cycle for repairs if something goes wrong.

If a cell has an error in its DNA that cannot be repaired, it may undergo programmed cell death (apoptosis) (illustration). Apoptosis is a common process throughout life that helps the body get rid of cells it doesn’t need. Cells that undergo apoptosis break apart and are recycled by a type of white blood cell called a macrophage (illustration). Apoptosis protects the body by removing genetically damaged cells that could lead to cancer, and it plays an important role in the development of the embryo and the maintenance of adult tissues.

Cancer results from a disruption of the normal regulation of the cell cycle. When the cycle proceeds without control, cells can divide without order and accumulate genetic defects that can lead to a cancerous tumor (illustration).

Hereditary

[ hə réddi tèrree ] transmitted genetically: passed genetically, or capable of

being passed genetically, from one generation to the next handed down through generations: handed down, or legally

capable of being handed down, through generations by inheritance

having inherited status: holding a right, function, or property by right of inheritance (dictionary)

Heredity is the passing of traits to offspring from its parents or ancestor. This is the process by which an offspring cell or organism acquires or becomes ...wikipedia

Slide preparation—water 1st is the preferred methodWet Mount: Used for aquatic samples, living organisms and

naturalTo prepare the slide: Place a drop of fluid in the center of the slide Position sample on liquid, using tweezers At an angle, place one side of the cover slip against

the slide making contact with outer edge of the liquid drop

Lower the cover slowly, avoiding air bubbles Remove excess water with the paper towel

Proper Biological Drawing Method

3.5 Biological Drawing PPTDesktopG7 Rules for Biological DrawingsG7

Lab Report How To’s G7 Rules for Biological Drawings

G7Lab Report How To’s Scientific drawings shows good and bad

AdaptCHANGE in plans—the food items did not

yet arrive—so we will do Elodea plant cells instead—adaptable!!

Complete the colored drawing of the animal and plant cell we started yesterday! We will use next week!

HOMEWORK—Colored cell drawings are due on MONDAY!! Hard copy to me!!!

Drawing what you will prepareDraw 2 cells—one animal and one plantAdd 2-4 more cell parts than we have

studied to your drawing. (Look at Mrs. George’s samples)

Plan what you will put in your cell—what you will use to represent each part

CHANGE in plans—the food items did not yet arrive—so we will do Elodea plant cells instead—adaptable!!

Elodea Plant Cell LabLet’s practice what we have learned!

Websites/OtherCell Name GameSee G7 Unit plans T3W1 Cells and Name that cell

http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/cells_systems/revision/4/

Plants and making foodhttp://www.bbc.co.uk/bitesize/standard/

biology/world_of_plants/making_food/revision/3/