Cell parts and functions. ehall/ph/cells/cells.htm ehall/ph/cells/cells.htm

Cell parts and functions

• http://www.forgefx.com/casestudies/prenticehall/ph/cells/cells.htm

• Plant and animal cell review game

# 1• Cell membrane• Allows the movement of material

(food, water, oxygen, wastes ) in and out of the cell

• Called diffusion

#2• Cytoplasm• Goopy cell filler that holds most of

the cells water

#3 dots

• Ribosomes• Makes proteins

#3 tunnels

• ER (endoplasmic reticulum)• Passageway for material to move

through the inside of the cell

#4• Nucleus• Control center of the cell

# 5• Chromosomes• Inside nucleus, contains DNA,

controls traits

# 6

• Vacuole• Hole used to store food, water or

waste

# 7• Mitochondria• Makes energy (E) from food

# 8

• Lysosomes• Digests foreign material in the cell

# 9• Chloroplast• Performs photosynthesis to get

energy from sun

# 10• Cell Wall• Contains cellulose, to protect and

support the cell

Spontaneous Generation

• POOF!• Life can just appear• Mice come from grain (poof)• Food rots because of bad spirits in

the air

Biogenesis

• Life only comes from living organisms

• 1600’s- Redi did a controlled experiment to disprove spontaneous generation

Microscope

• Invented by van Leeuwenhoek in 1675

Then…..

• 1678 Hooke named CELLS

Cell Theory

• 1. All living things are made of cells

• 2. Cells do all the work in the body• 3. Cells only come from other cells

To Be Alive…. 3R’s

• Respiration• Breathe and eat to make energy in

mitochondria or chloroplast• Response• Can react to a stimulus• Reproduction• As a species

Where is the diameter of the low power field of

view?

What is the diameter of this microscope, if the

ruler is in mm?

Scope B?

Scope C?

Using Scope C measurement

• Find the length of the grasshopper, truck, and lemon (all microscopic of course.)

• Remember, 1/4th of the diameter is 0.25 x 4.5=