Cell structure&Microscopy
Three differences between light and electron microscope
Light microscope enable to see organsims alive Electron microscope has higher resolution Electron microscope is heavier
Name of the bond in lipids
Ester
What is inhibitor
Molecule that temporarly(or permanently) blocks enzyme activity
Role of cholesterol in Cell membrane
Control Cell membrane fluidity
Ribosome size in eucaryots and procaryots
80S 70S
A lysosome has a diameter of 0.4 µm. Lysosome diameter in nm?
400
Name quality tests for carbohydrates
Benedicts test,iodine test
How do enzyme speed up biochemical reactions
Lowers activation energy of biochemical reaction
Phosholipds that have only saturated fatty acid tails form (.....) membrane
Rigid
Emulsion test is for...
Lipids
What is plasmid?
Small circle DNA,contains 3-10 genes
Three facts about cellulose
Monomer-betta glucose
Function-structure
Bonds-hydrogen...
In the graph, Z represents the rate of an enzyme reaction under optimal conditions and without an inhibitor.
Which curve would represent the same experiment carried out in the presence of a low concentration of competitive inhibitor?
C
Tell the type of transportation of molecules in&out of Cell that require input of energy
Active transport,bulk transport
Envelope of viruses is called
Capsid
What is the role of nucleoulus?
The syntesis of rRNA
Common features of starch and glycogen
Both strorage materials
Both have branched structure
Both monomer glucose
Name the factors that effect the enzyme activity
Temperatures,pH,concentration of substrate, concentration of enzyme, concentration of inhibitor
what is micelle? what is function of it?
vesicle that made of one lawyer of phospholipids.storage and transport of hydrophobic molecules.
Tell about cilia and microvilli
Cilia removes unnececasry staff,microvilli increases surface of Cell membrane
What is the function of golji apparatus?
Modfy and package proteins
lipid nature vitamins
A,D,E,K
enzyme immobolisation can be used for...
To get milk without lactose
Three facts about diffusion
Has two types
Movement of molecules from high to low concentration
Dont require energy
plasmodesmata is...
cytoplasmatic bridge in plant cells