A level biology 2022 - Study guides, Class notes & Summaries

Paper 1 AQA A level Biology 2022

AQA A-level PSYCHOLOGY 7182/3 Paper 3 Issues and options in psychology Mark scheme June 2022 Version 1.0 Final Mark Scheme. MARK SCHEME – A-LEVEL PSYCHOLOGY – 7182/3 – JUNE 2022 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examin...

AQA A LEVEL Biology 2022 2023 Paper 2 Higher Tier Mark Scheme. AQA A LEVEL Biology 2022 2023 Paper 2 Higher Tier Mark Scheme

AQA A-level BIOLOGY 7402/2 Paper 2 Mark scheme June 2022 Version: 1.0 Final. MARK SCHEME – A-LEVEL BIOLOGY – 7402/2 – JUNE 2022 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that th...

Explain why plasma membranes are said to have a fluid mosaic structure. - ANSWER 1. Fluid because the phospholipids are constantly moving. 2. Mosaic because the proteins are scattered throughout the membrane-like tiles in a mosaic. What effect does cholesterol have on the cell membrane? - ANSWER 1.Cholesterol molecules fit between the phospholipids and bind to the hydrophobic tails of the phospholipids. 2.Causes them to pack together more closely, restricting the movement of other molecules i...