I got that too...Don't worry you're not aloneOnly got 10 in the MC. Oh dear.
Because every new generation, the same biscuits are put back into the jar. In reality, the biscuits would change over time, because yellow biscuits would give birth to more yellow biscuitsCan anyone comfirm Q11? Was it C or D. If it's C then doesnt that make A.I the same thing as hybridisation? or are they the same thing? ahahahha shit
edit: i put D
It was C. Through A.I, they crossed two animals to get a hybrid. The resultant organism has genes from both the parents.Can anyone comfirm Q11? Was it C or D. If it's C then doesnt that make A.I the same thing as hybridisation? or are they the same thing? ahahahha shit
edit: i put D
It can't be D because the cream biscuits picked by the students represent organisms that have unfavourable characteristics within a population hence it's not a limitation of the investigation.Can someone explain to me why 20 isn't D :|
I think the answer's A because the kidney's role is mainly osmoregulation, so controlling the water level. True, water moves in through diffusion. But by ur reasoning, salt also moves through diffusion, so I think the answer's A.Ok can someone help, for question 14 (what is the role of the kidney in freshwater fish), everyone is saying it is 'A', to remove water from the fish, but doesn't water move in and out of the fish via diffusion, i thought the answer was 'B', to absorb salt from the environment, can someone clarify why it is A.
Ok, I think A is correct because:Ok can someone help, for question 14 (what is the role of the kidney in freshwater fish), everyone is saying it is 'A', to remove water from the fish, but doesn't water move in and out of the fish via diffusion, i thought the answer was 'B', to absorb salt from the environment, can someone clarify why it is A.
I put B saying that to absorb salt from the environment. Option A sounded too vague saying that to remove water from the fish.... Obviously how much??? If you remove all the water from the fish... its going to die through dehydration??!Ok can someone help, for question 14 (what is the role of the kidney in freshwater fish), everyone is saying it is 'A', to remove water from the fish, but doesn't water move in and out of the fish via diffusion, i thought the answer was 'B', to absorb salt from the environment, can someone clarify why it is A.
This is my understanding, as well.Absorbing salt from the environment is the role of the gills. Water constantly moves INTO the fish as it is freshwater and so there is a higher concentration of water outside and via osmosis it moves inside. Kidney then reabsorbs less water and excretes most