B2
1)Glycerol
-pH decreased due to fatty acids being produced.
-The graph for dialysis of UREA UREA UREA is curved because of diffusion
-You can round the ratio one to 1:3, because if you imagine the percentages from the genetic diagram its 25% and 75%
-Homo, Homo, Hetero
-The question on the ancient bird was a weird way but was focused around specification. The 4 points can be found in the specification.
-The 6 mark question in B2 was focused around: Creating a transect, recording light intensity and the average area every X meters. And lastly to make it valid, you have to repeat the experiment on another day/location? And keep variables? (Not sure)
-Robber was B
-The magnification was 400. Due to different units!
-Mitochondria is used to respire to release energy
-energy for photosynthesis? light energy from the sun absorbed into chloroplasts?
-stomach muscle is used for contraction and is used to churn food and gastric juices together
B3
-Fusarium is a fungus.
- The gas in the fermentater was Oxygen, and the liquid was Sugar Syrup.
- it can be produced faster and is more sustainable (??)
-The increase in waste question was about an increased population and increased quality of life
-The way oxygen enters the blood is a mix of mentioning heamoglobin and diffusion! Not one and not the other!
-4 uses of glucose for plants! This one, **** this one! So on the specification it only mentions 3: Cellulose, produce proteins, produce fat or oil for storage. So that means the last one could be anything, some guesses: Produce seeds, respiration (wrong because of question title), storage as insoluble starch (Might be part of fats and oils, if not, its the most likely)
-Fish one: You had to mention only 1 method (eg. thin diffusion pathway, large surface area, possible good blood supply) and then say it increases diffusion (It never mentions diffusion in the questions, its an annoying question where you state the obvious) WHICH allows the fish to absorb oxygen faster!
-Heart was muscular tissue.
-In the circulatory system they TRANSPORT: Urea and C02 (You cannot mention permanent residents of blood, that's next question)
-In blood, you can mention: Soluble products of digestion and platelets.
The percentage for waste was 41.5%, the question related to it just required a ton of stats and general patterns? (I think)
-The balloon at the bottom of the glass (To represent the lungs) was the diaphragm.
-The second part to the question above, when the balloon is pulled down. The volume inside the glass increases so the pressure decreases. This then draws air into the balloons due to the pressure difference.
-Controlling Body temperature - thermoregulatory system in the brain detects change in temperature of blood.
-how urine is made - filteration, reabsorption of glucose by active transport, absorption of mineral ions and water, urea and water produces urine
-rejection - antigens don't recognise the cell and cause rejection
-prevention - insulin shots / keep track of exercise
-6 marker - cow tissue valve/heart valve