Biology

This document contains the questions to the AQA A-Level Biology Paper 2 that was sat in 2023, get yours now to prepare for upcoming mocks and to use for practice.

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Apoptosis is the programmed cell death of damaged or unwanted cells. (a) Fig. 1.1 shows a transmission electron micrograph (TEM) of apoptosis of a leucocyte. Fig. 1.1 A B C (i) Name the following structures and processes shown in Fig. 1.1: • the structure labelled A forming in the cell surface membrane • the process occurring to the organelle labelled B • the structure labelled C. Structure A ...........................................................................................

1 This question is based on the Advance Notice Article ‘Development of therapeutic antibodies for the treatment of disease’. (a) (i) State what is meant by the term antigen. ........................................................................................................................................... . ..................................................................................................................................[1] (ii) Scientists can combine antibody fra...

2 OCR 2023 Section A You should spend a maximum of 40 minutes on this section. Write your answer for each question in the box provided. 1 The image shows an erythrocyte after being placed in a solution. Which option explains the appearance of the erythrocyte? A The solution was distilled water. B The water potential of the solution is equal to the water potential of the cytoplasm of the erythrocyte. C The water potential of the solution was less negative than the cytoplasm of the eryth...

(a) A light micrograph of a section through the trachea of a cat is shown in Fig. 1.1. Fig. 1.1 A B C (i) Name the tissues labelled A and B in Fig. 1.1. A ........................................................................................................................................ B ........................................................................................................................................ [2] (ii) Name the two types of cell in the box labelled C in...

2 OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which option correctly describes a tissue? A A group of cells performing similar functions B A group of organs performing a specific function C A group of similar cells performing a specific function D A group of similar cells performing a variety of functions Your answer [1] 2 Bone marrow stem cells are a source of erythrocytes. Which statement abo...

2 OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which description of biological molecules is correct? A DNA and RNA are both polymers of nucleotides. B Hydrolysis of sucrose produces fructose and β-glucose. C Proteins are polymers of amino acids and are broken down in condensation reactions. D Starch is a polymer of the monosaccharide maltose. Your answer [1] 2 Which statement about lipids is cor...