Biology AWeek 112-8-10

Agenda

BooksVocab timeCell History and Prokaryotes vs EukaryotesT-ChartExit Slip

Introduction to Cell TheoryHistory of Scientists:

Mathais Schleiden concluded that plants are composed of cells 1838:

1839: Theodore Schwann concluded that animals are composed of cells

1674: Anton Von Leeuwenhoek perfects techniques for grinding microscope lens to make the first microscope

1655: Robert Hooke coins the term "cell" to describe chambers in cork

Cell TheoryThose early scientists did experiments on living things and developed CELL THEORY

Main Ideas of Cell TheoryAll living things are made of one or more cells

1)

Cells are the basic units of structure & function of living things

2)

All cells come from existing cells 3)

Two Basic Cell Types

1) Prokaryotes“BACTERIA”Simplest and oldest form of lifeLacks internal compartments.No true nucleus.Most are single-celled

(unicellular) organisms.

Prokaryote

Two Basic Cell Types2) Eukaryote

More complex cellsHave several internal structures

(organelles).True nucleus.Either unicellular or multicellular.

unicellular example: yeast multicellular examples: plants

and animals

Eukaryote

Exit Slip

Name three differences between Prokaryotic and Eukaryotic cells.

Biology AWeek 112-9-10

Agenda

Cell videoOrganellesCell ModelsExit Slip

Organelles Organelle Plasma membrane Cell wall Nucleus Ribosome Cytoplasm Rough Endoplasmic

Reticulum (RER) Golgi apparatus (golgi

body) Vacuole Lysosome Chloroplast Mitochondria Centriole DNA (Chromatin)

Groups Per. 2

1 – Nucleus 2 – Mitochondria 3 – Ribosome, Vacuole 4 – Golgi apparatus 5 – Lysozome 6 – Rough E.R. 7 – Chloroplast

8 – Cell Wall, DNA 9 – Plasma Membrane 10 - Cytoplasm, Centriole

Groups Per. 5

1 – Nucleus, Centriole

2 – Mitochondria, DNA

3 – Ribosome, Vacuole

4 – Golgi apparatus,

Oganelle 5 – Lysozome,

Plasma Membrane6 – Rough E.R., Cell

Wall7 – Chloroplast,

Cytoplasm

Inside the Animal Cell

Disc 1 Label: Cytoplasm, cell membrane, centriole Color

Disc 2 Label: lysosome, cytoplasm, ribosome, RER, DNA,

nucleus, cell membrane, mitochondria, Golgi body, vacuole

Color Disc 3

Write the function next to the structures labeled above Color

Biology AWeek 112-9-10

Bio Warm-up 10/11

The plasma membrane is semi-permeable, meaning it keeps some things out while allowing other things in.

Make a list of other semi-permeable things. (example: strainer)

Semi-permeable

StrainerScreen Door (Door)Window (Screen)Fishing NetCheese Cloth

Homeo- “equal” Statis- "to stand"

"to stand equally“ regulate internal environment so as to

maintain a stable, constant condition Maintaining balance Dynamic equilibrium

Homeostasis – Maintaining Balance

Cells must keep the proper concentration of nutrients and water and eliminate wastes.

The plasma membrane is selectively permeable – it allows some things to pass through, while blocking other things.

Equilibrium

BalancedNo gradientCan be dynamic

Concentration gradient

What is concentration? How much of something is in there.What is a gradient?The measurement of how the

concentration of something changes from one place to another.

No Gradient

Low to High Gradient

Warm-UpWhat is the organelle that has been colored orange, what is its function in the cell?

Inside the Animal Cell

Disc 1 Label: Cytoplasm, cell membrane, centriole Color

Disc 2 Label: lysosome, cytoplasm, ribosome, RER, DNA,

nucleus, cell membrane, mitochondria, Golgi body, vacuole

Color Disc 3

Write the function next to the structures labeled above Color

Inside the Plant Cell

Disc 1 Label: Chloroplast, Central Vacuole, Cell Wall Write the function next to the structure Color

Disc 2 Label: lysosome, cytoplasm, ribosome, RER, DNA,

nucleus, cell membrane, mitochondria, Golgi body, chloroplast, vacuole, cell wall

ColorDisc 3

Write the function next to the structures labeled above Color