Font size
WorksheetsCell membrane review
Total questions: 15
Worksheet time: 11mins
All living cells are surrounded by a very thin membrane that is called....
Cell wall
Nucleus
Cell surface membrane
Endoplasmic Reticulum
Cell membranes are made up of all of the following materials except:
Lipid
Carbohydrates
Protein
Mineral
The cell membrane is
single layer
bilayer
triple layer
helix layer
The cell Membranes have several important functions except
controls the exchange of materials such as nutrients and waste products between the cell and its environment.
regulation of transport across the membranes of organelles
enable cells to receive hormone messages and in chloroplasts they contain the light-absorbing pigments needed for photosynthesis.
fight bacteria and viruses that enter the cell.
Phospholipids help to form the membranes that surround cells and organelles. The head of the phospilipids are (a) and it always face the water
Meanwhile the tails of Phospolipids are
(a)
membranes also contain protein. There are two types of protein. what are they?
(a)
Proteins are contained of carbohydrates from the group of
Polysaccharides
oligosaccharides
Monosaccharides
Disaccharides
These are the molecules that contained inside the membrane except
Phospholipids
Cholesterol
Glycolipid & Glycoprotein
Vitamin
The molecular mechanisms by which cells detect and respond to external stimuli, including communication between cells is called
Cell signaling
Cel Diffusion
Cell Division
Cell Absorption
Signalling pathways can be in which way?
(a)
A stimulus causes cells to secrete a specific chemical named
(a)
Conversion of the original signal to a message that is then transmitted is called
(a)
the net movement of molecules or ions from a region of higher concentration to a region of lower concentration down a concentration gradient, as a result of the random movements of particle is called
Diffusion
Osmosis
The rate at which a substance diffuses across a membrane depends on a number of factors, except
the steepness of the concentration gradient
Temperature
The surface area
The amount of molecule
