AQA A Level Study guides, Class notes & Summaries

AQA A Level Paper 2 Biology Exam (2024) || Complete Questions & Answers (100% Accurate) AQA A Level Paper 2 Biology Exam (2024) || Complete Questions & Answers (100% Accurate) heat stress decreases the light-dependent reaction of photosynthesis. explain why this leads to a decrease in the light-independent reaction [2] - ANSWER - - less ATP - Less NADH A decrease in the activity of the enzyme rubisco would limit the rate of photosynthesis. Explain why [2] - ANSWER - - Less CO2 react...

AQA A-Level Biology Chapter 3.2 – Cells Exam || All Questions & Answers (Rated A+) AQA A-Level Biology Chapter 3.2 – Cells Exam || All Questions & Answers (Rated A+) Structure of Nucleus. - ANSWER - 1. Nuclear envelope: double membrane surrounding nucleus, outer membrane continuous with the (R)ER of the cell. 2. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. 3. Nucleoplasm: granular, jelly-like material making up the bulk of the nucleus. ...

AQA A level Physics Mechanics Exam || All Questions & Answers (100% Correct) AQA A level Physics Mechanics Exam || All Questions & Answers (100% Correct) Explain what is meant by an inelastic collision - ANSWER - where kinetic energy is not conserved State, in words, the relationship between the force acting on a body and the momentum of the body - ANSWER - Force is the rate of change of momentum State two quantities that are conserved in an elastic collision - ANSWER - -momentum -kin...

AQA A-Level Biology Comprehensive Exam || All Questions & Answers (Graded A+) AQA A-Level Biology Comprehensive Exam || All Questions & Answers (Graded A+) Describe the role of a ribosome in the production of a polypeptide. /3 - ANSWER - 1. mRNA binds to ribosome; 2. Idea of TWO codons/binding sites; 3. tRNA with ANTICODONS binds; 4. (Catalyses) formation of PEPTIDE bond between AMINO ACIDS (held by tRNA molecules); 5. Moves along (mRNA to the next codon); Describe the structure of g...

AQA A Level Biology Test Revision Set || All Questions & Answers (100% Verified) AQA A Level Biology Test Revision Set || All Questions & Answers (100% Verified) Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - ANSWER - ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test y...

AQA A Level Biology Topic 3 Exam || Questions & Answers (Graded A+) AQA A Level Biology Topic 3 Exam || Questions & Answers (Graded A+) The hydrostatic pressure falls from the arteriole end of the capillary to the venule end of the capillary. Explain why - ANSWER - Loss of water High blood pressure leads to an accumulation of tissue fluid. Explain how [3] - ANSWER - High blood pressure = high hydrostatic pressure; Increase outward pressure from (arterial) end of capillary; (So) more tis...

AQA A-level Computer science Paper 1 Test || All Questions & Answers (expert Rated A+) AQA A-level Computer science Paper 1 Test || All Questions & Answers (expert Rated A+) What is an integer? - ANSWER - A positive or negative whole number What is a Real or Float number? - ANSWER - A positive or negative number that can have a fractional part. What is a Boolean? - ANSWER - True or False What is a character? - ANSWER - A single letter, number or symbol What is a string? - ANSWER ...

AQA A Level Maths Exam (2024) || All Questions & Solutions (100% Correct) AQA A Level Maths Exam (2024) || All Questions & Solutions (100% Correct) Straight line equation formula - ANSWER - y-y1 = m(x-x1) Perpendicular straight lines - ANSWER - m1 x m2 = -1 Log(a)b=c - ANSWER - a^c=b Log(10)x + Log(10)y = - ANSWER - Log(10)xy Log(10)x - Log(10)y = - ANSWER - Log(10)x/y kLog(10)x = - ANSWER - Log(10)x^k Displacement dy/dx = - ANSWER - Velocity Velocity dy/dx = - ANSWER - ...

AQA AS Level Biology Exam || Questions & Answers (Graded A+) AQA AS Level Biology Exam || Questions & Answers (Graded A+) What are the three ways a pathogen can damage hosts cells? - ANSWER - 1) rupturing them to release nutrients inside them 2) breaking down nutrients inside the cell for their own use. This starves and eventually kills the cell. 3) replicating inside the cells and bursting them when they're released What are the two ways pathogens cause disease? - ANSWER - 1) producti...

AQA Biology A-Level Paper 2 Exam Questions & Answers (Graded A+) AQA Biology A-Level Paper 2 Exam Questions & Answers (Graded A+) describe and explain the steps in the light dependent reaction of photosynthesis - ANSWER - 1. photoionisation: light reaches chlorophyll in PSII, which is absorbed by an electron, which becomes excited and moves to a higher energy level. 2. the electron passes to a carrier protein in the thylakoid membrane, and is passed down a series of carrier molecules call...