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Objective Here!

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Page 1: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Objective Here!

Page 2: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Where do you find roads without vehicles, forests without trees, and cities without houses?

Page 3: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Which numbered organelle produces ATP and is called the Powerhouse of the cell?

A) 1B) 7C) 9D) 13

Page 4: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Page 5: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Maintaining control of the internal environment

Page 6: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

The structure of the plasma membrane

How the plasma membrane functions as a semi-permeable membrane

Page 7: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

The membrane separates the organelles of the cell from the outside environment

It is made of a double layer of phospholipids and embedded proteins.

Page 8: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Controls what enters and leaves the cell. Nutrients Waste

It is said to be selective permeability (Everything CANNOT enter the cell)

Water can freely enter and leave the cell

Maintains homeostasis

What does the plasma What does the plasma membrane do?membrane do?

Page 9: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Page 10: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

There are 3 types of lipids (fats) Phospholipids Glycolipids Cholesterol

Proteins Integral (glycoprotein) Peripheral

Page 11: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Made of lipids (fats) with a phosphate head

Lipid portion is 2 fatty acid tails. The tail is hydrophobic: does NOT like water

Phosphate head is hydrophilic: it DOES like water.

phospholipid

Page 12: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Cholesterol embedded in membrane keeps it fluid

The bi-layer is known as the Fluid Mosaic Model, because proteins embedded in the membrane can move

Fluid Mosaic Model

Page 13: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Here is what a phospholipid bi-layer looks like as a sphere

Fluid Mosaic Model

Page 14: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

• Materials must move in and out of the cell through the plasma membrane.

• Some materials move between the phospholipids.

• Some materials move through the proteins.

Page 15: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Some proteins span membrane and determine which molecules can enter or leave. These are transport proteins.

Other proteins on the surface act as receptors

Page 16: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

1) Channel Proteins2) Carrier Proteins3) Enzymatic Proteins4) Receptor Proteins5) Cell Recognition

Proteins

Page 17: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Have channels that allow molecules to move from an area of high concentration to an area of low concentration. NO energy is used

Page 18: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Carrier Proteins – combine with a molecule to help it move across the membrane

Page 19: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

– Carry out metabolic reactions

Page 20: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Receptor Proteins– Have a binding site for a specific molecule.

Page 21: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Marker Proteins–extend across the cell membrane and serve to identify the cell. The immune system uses these proteins to tell friendly cells from foreign invaders. They are as unique as fingerprints.

They play an important role in organ transplants. If the marker proteins on a transplanted organ are different from those of the original organ the body will reject it as a foreign invader.

Page 22: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Selectively Permeable

Page 23: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

What is the function of the cell/plasma membrane?

What is the membrane made of?

The membrane is said to be ________________

What is the name of the model?

How can molecules enter the cell?

Page 24: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

http://www.wisc-online.com/objects/ViewObject.aspx?ID=ap1101

Page 25: Objective Here!. Where do you find roads without vehicles, forests without trees, and cities without houses?

Cell membranes are constructed mainly of: A. lipid bi-layers B . Protein pumps C. carbohydrate gates D. chloroplast

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