Daily Question 4/27/2015 Thinking back to Friday, what would you have done differently in order to...

Daily Question 4/27/2015

Thinking back to Friday, what would you have done differently in order to build a taller structure? Please think more about group dynamic then the physical structure.

Parts of the Eukaryotic Cell Structures are

determined by function

3 main components Cell membrane Nucleus Other organelles

OrganellesTiny cell structures that carry out

specific functions within the cell. Produce energy, build and transport

needed materials, and store and recycle wastes

Can you name any???

Cell Membrane Controls which

substances pass in and out of the cell (selectively permeable)

Made of lipids and proteins

“Doorman”

Cytoplasm Area between cell

membrane and nucleus

Contains organelles “floor”

Nucleus Stores DNA “Manager” Nuclear membrane

– double membrane surrounding nucleus

Nuclear pores – small holes in nuclear envelope

Nucleolus – where ribosomes are synthesized

Chromatin Are thin strands

floating in the nucleus.

Contain the genetic material (DNA), or the instructions that direct the functions of the cell.

Mitochondria Site of chemical

reactions 2 membranes

Smooth outer Inner membrane

Cristae – increase surface area

Has own DNA “Generator/

Powerhouse”

Endoplasmic Reticulum System of membranous

tubules and sacs that help molecules move from one part to another

Amount depends on cell activity

“Conveyer belt” Rough - Have

ribosomes Smooth – Don’t have

ribosomes

Ribosomes Not surrounded by

membrane Assembles protein Free or Attached to

ER “Machines”

Daily Question 5/7/151. Draw an animal cell. Label the cell

membrane, cytoplasm and nucleus. 2. What form is DNA found in the

nucleus? Or what is long strands of genetic material?

3. What does the mitochondria do?

Golgi Body Processing,

packaging and secreting organelles

Works with ER; modifies proteins exported by the cell

“Packaging and Shipping Plant

Lysosomes Enclose hydrolytic

enzymes w/in a single membrane

Digests proteins, carbs, lipids, DNA, RNA, old organelles

“Security/Janitor”

Cytoskeleton Network of long

protein threads located in cytosol

Maintains shape and size

Participates in movement

“Dropped Ceiling” 2 types

Microfilaments Thin threads of

protein (actin) Contribute to cell

movement and contraction of muscles

Microtubules Hollow tubes,

largest strands of cytoskeleton

Make up spindle fibers in cell division

Example is a Centriole.

Cilia and FlagellaHair like organelles that extend from

surface of cellAssist in movementComposed of nine pairs of microtubules

arranged around a central pair

Daily Question 5/8/15Get out your

animal cell coloring. We will finish coloring in the next 5 – 7 minutes.

Cell Factory

Inside a Cell - Video

Plant Cells 2 different structures

Cell wall Chloroplast

Cell Wall Lies outside the cell

membrane Rigid, helps support

and protect plant Contains cellulose

Chloroplasts Chloroplasts

Convert sunlight into chemical energy in the thylakoid

Green!

Vacuoles Fluid filled organelle

Stores enzymes and metabolic waste

Can be LARGE

Bacterial Cells Has a cell wall and

cell membrane but DOES NOT have a nucleus.

Bacterial Cells are much smaller

No nucleus = Prokaryotic

Nucleus = Eukaryotic EUKS have NUCS,

PROS DON’T

Specialized CellsAre found in multi-cellular organismsThe structure of each kind of cell is

suited to the unique function it carries out within the organism.

How is a blood cell suited for the job that it does? Nerve Cell?