the easiest biology exam i have ever done!!!!!!
1) osmosis, active transport
A has gained in weight because there was a higher concentration of water(dilute) outside the bag so water entered the bag by osmosis.
B is the one that changes the less because the concentration of sugar outside the bag(4.2) is nearly the same as the concentration of sugar inside the bad(5) so only small amount of water will enter the bag by osmosis and the net movement will then stop.
the six marker was okay I put:
A was red blood cells, they have no nucleus and carry haemoglobin which combines with oxygen to make oxyheamogobin, they carry oxygen from the lung to the cells in the body and then oxyheamoglobin break into oxygen and heamoglobin for exchange
B was white blood cell, produce antibodies to kill pathogens, and antitoxin to neutralise the toxin produced by harmful microorganisms
C was platelets, they help the blood to clot at a wound to stop excessive bleeding and stop microorganism from entering.
last question on mycoprotein
the fungus, fusarium is grown in a fermenter which is supplied with glucose syrup for food and respiration+oxygen for aerobic repirarion +nitrogen for growth and the production of amino acids
air is filltered and sterilised so that unwanted microorganisms dot grow in the fermenter
the fusarium is then harvested,purified and dried so that it can be used in food.
the 2 differences between the composition of blood in the vein and artery are:
veins have deoxygenated blood whereas arteries have oxygenated blood
veins have more carbon dioxide than arteries(because it has just come from the cell and exchanged oxygen for CO2 and are now going to the heart to go to the lungs to get rid of it in the alveoli)
i cant remember the question numbers and other questions so if u remember a question, tell me