AQA PHYSICS 7407_2_QP_Physics_AS_ Answer all questions in this section. box 0 1 A student investigates stationary waves using microwaves. Figure 1 shows a metre ruler fixed to a bench. The student places a microwave transmitter T at one end of the ruler and a vertical metal reflector R at the other end. R is at a right angle to the ruler.

2023/2024 AQA GCSE BIOLOGY PAPER 2: EXAM AND STUDY GUIDE/PREPARATION What is homeostasis? – ANSWER: Homeostasis is the maintenance of a constant internal environment in order tomaintain optimum conditions for enzyme and cellular function. Give examples of conditions maintained by homeostasis in the body - ANSWER ● Blood glucose concentration ●Body temperature ●Water levels What two types of responses are used in body control systems? – ANSWER: Nervous and chemical What thr...

Scientists investigated the action based on the enzyme ATP synthase. They made reaction mixtures each containing: • ATP synthase • buffer (to control pH) • substrates. One based on the substrates required within these reaction mixtures is inorganic phosphate (Pi). Tick ( ) one box to show which other substrate the scientists must add to the reactionmixtures to produce ATP. [1 mark] Adenine Adenosine diphosphate Glucose Ribose

Level 3 Technical Level IT: CYBER SECURITY Unit 6 Network and cyber security administration Thursday 16 May 2019 Morning Time allowed: 2 hours Materials For this paper you must have: • a ruler • a scientific calculator (non-programmable) • stencils or other equipment (eg flowchart stencils). Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer each question in the space provided...

By way of illustration, the following would apply. CH3 C C CH3 C CH3CH2 OH C C OH allowed allowed not allowed not allowed not allowed NH2 C C NH2 NH2 NH2 NO2 allowed allowed allowed allowed not allowed CN C C CN COOH C C COOH C COOH not allowed not allowed not allowed not allowed not allowed CHO C C CHO C CHO COCl C C COCl not allowed not allowed not allowed not allowed not allowed • Representation of CH2 by C−H2 will be penalised • Some examples are given here...

Answer all questions in the spaces provided. box 0 1 . 1 What is a gene? [1 mark] 0 1 . 2 Describe how the production of messenger RNA (mRNA) in a eukaryote cell is different from the production of mRNA in a prokaryote cell. [2 marks] 0 1 . 3 Scientists produced a short, single-stranded, artificial nucleic acid, called PNA. The PNA binds to a small section of DNA. The scientists introduced PNA into cells and discovered that these cells produced less mRNA than cells that did not contain ...

This is the Biology version of the Practical handbook. Sections J to P are particularly useful for students and could be printed as a student booklet by schools. The information in this document is correct, to the best of our knowledge as of September 2016. This document is expected to be revisited throughout the lifetime of the specification. Please check you have the latest version by visiting our website. Thank you to all the teachers, technicians and associates who have commented on previous...

GCSE PHYSICS 8463/1H Paper 1 Higher Tier Mark scheme June 2020 Version: 1.0 Final Mark Scheme

AQA-Scheme of work A-level Business-Graded A+ 2022