Structure Of Cell Chap4 Flashcards
What is the difference between light microscope and electron microscope
What is the building block of every organism
Cells
Example of eukaryotes cells
Plant and animal
Fungi
What is prokaryotes cell and example
Bacterial and archaea
They are single cell organisms
They have plasma membrane
Cytoplasm,DNA,Ribosomes
They lack nucleus or any other membrane bound organelle
Electron microscope
Use beam of electron instead of light
We can’t see living cells with electron microscope
Function and structure of prokaryotes cell wall
Have polysaccharides capsule
Cell wall acts as layer of protection and help maintain shape of cell and prevent dehydration
Pilli
Exchange genetic information during conjugation
Prokaryotes size significance
They allow ion and organic molecules that enter them diffuse quickly
What advantage might small cell size confer on a cell?
What advantage can a large cell size confer on a cell?
More efficient
Easy transport of substances across plasma membrane .
Higher surface area to volume ratio, which provides a greater surface are for exchange of nutrients and waste material spending lesser energy
Eukaryotic cells
They have organelles
They perform more functions simply because they have complex structure.
They are slow to respond to cellular signal because of their size.
Membrane bound nucleus
Golgi apparatus
Modifies Protein
Lysosome
Digest food and gabbage disposal
Mitochondria
Produces energy
Peroxisome
Detoxify toxins
Oxidation of fatty acids and amino acids
Vacuole
Filled with cell sap that maintains pressure against the cell wall
Plastid
Stores pigments
If the Nucleolus were not able to carry out its function, what other cellular organelles would be affected
Structure of endoplasmic reticulum would not form
Lysosome would be hindered
Golgi apparatus will not be able to sort protein properly
Hydrolases enzymes
Uses water to break chemical bond to divide macromolecules into smaller ones
What does the plasma membrane do ?
They are phospholipids bilayer with embedded proteins that separate the internal contents of a cell from its surroundings environment
Plasma membrane controls passage of organic molecules
Phospholipids
Is 2 fatty acid chain with phosphate containing group
What is plasma membrane of cell that specializes in absorption of fold into figerlike projections
Microvillus
Cytoplasm
The region btw the plasma membrane & the nuclear envelope
Metabolic reaction takes place in the cytoplasm
Chromatin
It’s DNA +Protein
It forms chromosomes
What differentiate animal from plant cell
Centrosome and lysosomes
Centrosome
Is a microtubule organizing center found near the nuclei of animal cells
