Please enable JavaScript.
Coggle requires JavaScript to display documents.
B2 (2) (Using Energy (Energy for swimming (Sperm cells are packed full of…
B2 (2)
Using Energy
Energy for swimming
Sperm cells are packed full of mitochondria. These produce energy to drive its tail movements so it can swim towards the egg(15cm)
Sperm do not have any food reserves such as glycogen. Instead, they use sugars from the fluid in which they were ejected from the male
-
-
-
Building large molecules: Cells use energy to make small molecules join together to make long chains
Enzymes
-
-
Home
Skin Complaints
ySome stains might be made up of proteins. The proteases in detergents change the proteins into small, soluble amino acid molecules. These can easily be washed away
-
Industry
-
-
Soft-centre chocolates
1- A mixture of sucrose, flavouring, colouring and an enzyme called sucrase are mixed together to make a paste
2- The paste is moulded, left to set then liquid chocolate is poured over it
3- The chocolates are warmed up a little, so that the enzyme begins to work on the sucrose inside them
-
5- The mixture of glucose and fructose make thick, soft syrup inside the chocolates
Aerobic respiration
Releasing Energy
-
The blood takes oxygen and carries it round the body while blood also carry carbon dioxide to the lungs
-
-
Most of the time, cells release energy by combining glucose molecules with oxygen
Anaerobic Respiration
Lactic Acid
Lactic acid is the incomplete breakdown of glucose to lactic acid(glucose --> lactic acid(+a little energy))
-
-
-
-
Maximum Oxygen Uptake
The maximum volume of oxygen that your body is able to use per minute is called VO2 max. The fitter you are, the higher the value of VO2 max
Proteins
Shapes
Enzymes, antibodies and hormones usually have a globular structure which have dents to fit with other kind of molecules
-
-
-
Enzymes and Digestion
Type of Enzymes
Digestive enzymes pass out of cells in glandular tissue, go into the space inside the gut and become mixed up with the food
-
-
Acid and Alkali
-
The liver produces bile, which is stored in the gall bladder
Cell Division
Mitosis
-
-
Chromosomes
-
Before a cell divides by mitosis, it copies each chromosome
When the cell divides by mitosis, the chromosomes are shared out equally between the two new cells
Meiosis
-
-
3- The chromosomes separate from their partners, and the cell divides
-
-