Chapter 2 (cells Flashcards
Who’s the father of microscope?
Anthony Leeuwenhoek
Who’s the inventor of microscope?
Zaccaria’s jassen
The discovery of cell gave way for?
Modern cell theory-All living things are composed of cells
Function of cytoplasm;
Food storage and complex chemical processes occur here
Function of chromosomes
Carry the hereditary material determinig the organism characteristics and transmitting these to subsequent generations
What’s the basic structure of cell membrane
Phospholipid.
All membrane contains;
Protein and lipid
Percentage of lipids and protein contained are?
1.Myelin
2.mitochondria inner membrane
3.red blood cell membrane
4.mouse liver membrane
Lipid and protein respectively
1.76&18
2.24&76
3.43&44
4.52&49
The dark-staining zone in the nuclei is called
Nucleolus
What is the repository of the genetic information that directs all of the activities of a living eukaryotic cell?
The nucleus
Where is the region where intensive synthesis of ribosomal RNA is taking place?
Nucleolus
What is the system of cavity in an endoplasmic reticulum?
Cristernea
What is the function of the nucleolus ?
Carry’s DNA information to synthesize rRNA
What’s the function of the ribosome
Carry’s protein synthesis
Function of the rough endoplasmic recticulum?
Isolate and transport proteins that has been synthesized by ribosome
Function of the smooth endoplamic recticulum
Synthesis and transport of lipids and steriod
Function of the Golgi body
Storage, modification and packaging of protein products and also add polysaccharide to the protein
Function of mitochondria
The site of oxidative phosphorylation and electron transport, site of TCA protein
Function of the lysosomes
To digest worn out cell . Also called the sucidebag.
Function of the centrioles
Helps to assemble microtubules.
1.A pair of centriole are called
2.centriole are also called
1.centrosome
2.Microtubules organizing centers
1.the average life span of a cytoskeleton micro tubule is
2.the average lifespan of a spindle micro tubule is
1.10mins
2.20 sec
What’s give the micro tubule its characteristic tube shape
The Protofilament arranged side by side.
What’s use to inhibit depolarization?
GTP- Guanosine Triphosphate
The function of micro tubule
responsible for moving materials with in the cell itself
The microtubules consist of
Ring of 13 protofilaments made from globular proteins consisting of heterdimers of alpha and beta tubulin units
Golgi body consists of
Stacks of flattened cavities lined by smooth endoplasmic recticulum which contain secretory granules
Ribosome contains
Significant proportion of RNA in the cell
Passive transport include; and there examples
1.diffusion; renovations of waste products from the blood stream
2.Faciliitated diffusion; exchange of oxygen and carbon dioxide in the aveoli
3.Osmosis;
4.Filtration ; ultrafiltration in the kidney
Types of active transport;
1.transport with protein; move substances across the wall molecule by molecule by special protein called permeases
2.endocytosis ;phagocyting of material and transporting it
What’s are the 3 types of endocytosis ?
1.Phagocytosis
2.Pinacytosis
3.Receptor-mediated endocytosis
Centrioles are made up of
9 triplets of micro tubules
