Intro to Cells

Ch.7-2 pg 174-181

Studio Daily Video Player

The Cell Theory

All living things have cells Cells are the basic unit of life. Cells arise (come) from other cells!

Prokaryotes vs Eukaryote

Simpler

Smaller More complex

No nucleus more specialized organelles a nucleus

Ex. Bacteria Ex. Animals, plants

mushroom

protist

Protist, a single celled organism. One cell big!!!

Cell Comparison

Prokaryote vs Eukaryote

A. Nucleus

Controls cell activities, stores genetic information. Surrounded by nuclear membrane DNA is here!! Nucleolus is a small dense area where ribosome

assembly begin.

B. Ribosome's

Small particles of RNA and protein that assemble proteins.

“makes proteins”

Endoplasmic Reticulum

Rough ER: synthesis (making) of proteins. It’s called rough because the ribosome's on it look like bumps.

Smooth ER: contain specialized enzymes,like those that detoxify (liver)

and make lipids for cell membrane.

D. Golgi Apparatus

Modify (changes), sorts, and packages proteins from ER .

organizes and delivers! “pancake stack”

E. Lysosomes

Uses enzymes to break down molecules and dead bacteria…cleans up!

F. Vacuoles

Stores materials such as water, salts, proteins, and carbs.

Create pressure to maintain shape, like leaves.

G. Mitochondria and Chloroplast

1. Mitochondria convert food to ATP ENERGY that can be used by the cell.

– Found in plants and animals 2. Chloroplast capture energy from the sun and

convert into chemical ENERGY in the process of photosynthesis.

– Found mostly in plants and some photosynthetic bacteria.

H. Cytoskeleton

Cell wall in plants: made of cellulose Microtubules and centrioles, give shape and

structure

Cell –e-bration Brochure

Due oct 22

Concepts in Biochemistry - Interactive Animations