AQA AS Unit 1 Biology - Unofficial Markscheme

Think it was the second question, match the letters with the function and then work out magnification of the cell?

There was a picture of a cell.

The cell was labeled with letters, you were asked to fill out a table linking 3 function to their respective letter.

The functions were something like:
Protein Synthesis
Aerobic Respiration
Packages Enzymes

(or something like that, hope this helps)

I didn't add that, but it was a 2 marker so I would say there is a good chance that could be one of the marks

LDL was facillitated diffusion it specifically mentions the protein involved in the process of moving the lipid through the membrane of liver cells I don't know why people say active transport or normal diffusion

Did you also have to talk about the muscles in their heart getting stronger/thicker for the in order for their stroke volume to increase or did i add unnecessary info.

Edit: and ffs I couldn't remember the word stroke volume so i said something stupid like volume of blood pumped out heart per heartbeat

Btw anyone who put active transport for that question needs to be SHOT!!!!!!

Btw anyone who put active transport for that question needs to be SHOT!!!!!!

its normal diffusion because LDL's are lipid soluble and therefore can simply diffuse through the phospholipid bilayer

Yeah it's carrier proteins just with facillitated diffusion why would you ever put the active transport it mentions about a concentration gradient haha

Yeah it's carrier proteins just with facillitated diffusion why would you ever put the active transport it mentions about a concentration gradient haha

yeah you must be right because active transport has absolutely nothing to do with carrier proteins or anything to do with concentration gradients ......................................

samuelsingleton has got you good tbf

I put antigen of LDL

Yeah cow active transport goes against the concentration gradient this mentions about the lipids being take up going with the concentration gradient you woper