1) Cell Structure

Question 1

How are organelles involved in Protein PRoduction

Answer 1

Protein made at ribosomes
1) RER make proteins that are excreted or attached at the cell membrane
2) New proteins prouced fold and processed in rer
3) Transported from er to golgi apparatus via vesicles
4) Further packaged and processed
5) secreted out in vesicles by exocytosis

Question 2

What is rhe function of cytoskeleton

Answer 2

Support position of organelles
Strengthen cell and shape
Movement of materialls
Cause cell to move by cilia or flagella

Question 3

What are prokaryotes

Answer 3

DNA is circular
No nucleus
cell wall out of polysachharide
no membrane-bound organelles
flagella out of flagellin
small ribosomes

Question 4

What are eukaryotes

Answer 4

Large cells
DNA is linear
Nuclear present - DNA in nucleus
No cell wall in animas , cellulose cell wall; ,chitin wall in insects
Many organelles
Flagella
Large ribosomes

Question 5

Describe Light Microscopes

Answer 5

Use light
Lower resolution of 0.2 microm
Whole cells or tissues
Max mag is about 1500

Question 6

Describe Laser Scanning Confocal Microscopes

Answer 6

Use laser beams , Fluorescent dye.
Give off light
Focused on pinhole onto detector
3D Image

Question 7

Describe Transmittion electron microscope

Answer 7

Use electromagnets to focus beam of electron
Absorb more electrons ,look darker,
Provide high resolution images.

0.0002 microm resolution
more than 1000000

Question 8

Describe Scanning electron microscope

Answer 8

Scan a beam of electrons across specimen
Form image
Lower resolution image than TEMS.

0.02 microm
less than 500000