Hey guys!
I have more questions to ask.
In immunity, I know that when the body is exposed to the pathogen the second time, B memory cells differentiate. So, my question is do they differentiate into B memory cells and antibody-producing B plasma cells?
Also, with regards to using DNA sequencing to see if two species are different or not. So, if they are the same species, does that mean that their DNA sequence is identical or that there are differences, but not many?
Also, from question 2 c 2016 exam, for the dependent variable I said amount of glucose left because if the enzyme is inhibited, rate of fermentation decreases which may mean that the glucose is broken down more slowly. Is this valid?
From the 2016 exam question 8 a, 4 marks
I wrote:
Variation exists in the population of sea stars. The water temperature acted as a selection pressure in the warm water environment and the cold water environment. Sea stars that gave rise to C.pentagona had a selective advantage in warmer water, for example, meaning that they were more likely to survive in the warmer water, meaning that the were able to pass on the allele that provided the ability to survive in warmer environment to their offspring and so over generations, that allele frequency increased.
I was wondering how many marks this would get and how I could improve?
Thank you for all the help everyone has given me so far! It helps so much and I really appreciate it!