AQA • Biology

AQA AS Level Biology Paper 1 2022.

0 1 Figure 1 shows a cell from the lining of the ileum specialised for absorption of products of digestion. SGLT1 is a carrier protein found in the cell-surface membrane of this cell, it transports glucose and sodium ions (Na+) into the cell. Figure 1 . The action of the carrier protein X in Figure 1 is linked to a membrane-bound ATP hydrolase enzyme. Explain the function of this ATP hydrolase. [2 marks]

01.1 B: is hydrolysed in the ileum and a product of this hydrolysis is found in micelles; A: is formed by a condensation reaction between two α-glucose molecules; C: is formed by the action of DNA polymerase; B: gives a positive result in an emulsion test; 4 (4 x AO1

0 1 . 1 Figure 1 shows the structure of some biological molecules. Figure 1 Want to earn £756 extra per year? S - The Marketplace for Revision Notes & Study Guides 3 *03* Turn over ► IB/M/Jun22/7401/1 Do not write outside the boxComplete Table 1 by writing the correct letter, A, B, C, D or E, in the box next to each statement. Each letter may be used once, more than once, or not at all. [4 marks] Table 1 Letter Statement is hydrolysed in the ileum and a product of this hydroly...

AS Biology Paper 7401/2 Mark scheme 7401 June 2016 Version: 1.0 Final PMT 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 the mark scheme covers the students’ responses to quest...

AS BIOLOGY 7401/2 Paper 2 Mark scheme 2022 Version: 1.0 Final *206A7401/2/MS* MARK SCHEME – AS BIOLOGY – 7401/2 – 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 the mark s...

This document contains all of the information about cell structures; all of the information is straightforward, and as someone who has struggled with remembering the structures, I have found it very useful, and I hope other people will as well.

Full lesson and revision notes on AQA A2 Biology - the human body. Looking at synapses, muscles, the neuromuscular junction, kidneys and homeostasis

Full lesson and revision notes on AQA A2 Biology: Genetics

Full lesson and revision notes on AQA A2 Biology: Energy transfers in and between organisms