Psii - Samenvattingen, Aantekeningen en Examens

AQA biology a-level paper 2 / Edexcel A Level Biology Question and answers Paper 2 June 2023 (Salters Nuffield) 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 ...

AQA A Level Biology - Photosynthesis Questions And Answers What are the two stages of photosynthesis called> The Light Dependent reaction The Light Independent reaction (The calvin cycle) What is the purpose of photosynthesis? To energy from light is used to make glucose What is the general equation for photosynthesis ? 6H2O + 6CO2 + energy --> C6H12O6 + 6O2 What are the x stages of the light dependent reaction ? 1. Photoionisation of PSII 2. Photolysis of water 3. Photoionisa...

BIOL 1P91 - Final Exam Prep Questions Well Answered 100% Which of the following happens in the cytosol? a) Glycolysis b) breakdown of pyruvate into an acetyl group c) citric acid cyle d)oxidative phosphorylation e) all of the above - ANSWER Answer: Glycolysis The net products of glycolysis are: a) 6 CO2 + 4 ATP, 2 NADH b) 2 pyruvate, 2 atp, 2 NADH c) 2 pyruvate, 4 ATP, 2 NADH d) 2 pyruvate, 2 GTP, and 2CO2 e) 2 CO2, 2 ATP & glucose - ANSWER Answer: b, 2 pyruvate, 2 atp, 2 NADH...

Edexcel A-level biology exam questions and answers 100% pass Describe the events of fertilisation that occur after the acrosome reaction. - Answer-- Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane - Answer--Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards...

Edexcel A-level biology exam questions and answers 100% pass Describe the events of fertilisation that occur after the acrosome reaction. - Answer-- Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane - Answer--Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards...

BIOL 1P91 - Final Exam Prep Questions Well Answered 100% Which of the following happens in the cytosol? a) Glycolysis b) breakdown of pyruvate into an acetyl group c) citric acid cyle d)oxidative phosphorylation e) all of the above - ANSWER Answer: Glycolysis The net products of glycolysis are: a) 6 CO2 + 4 ATP, 2 NADH b) 2 pyruvate, 2 atp, 2 NADH c) 2 pyruvate, 4 ATP, 2 NADH d) 2 pyruvate, 2 GTP, and 2CO2 e) 2 CO2, 2 ATP & glucose - ANSWER Answer: b, 2 pyruvate, 2 atp, 2 NADH...

Edexcel A-level biology exam questions & answers 2023/2024 Describe the events of fertilisation that occur after the acrosome reaction. - ANSWER--Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane - ANSWER--Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in toward...

photosynthesis atmospheric carbon dioxide is removed and transformered into oxygen and carbohydrates photosynthesis chemical energy is added to the biosphere source of oxygen for aerobic resperation thylakoid membranes photosynthetic pigments occur in grana layers of thylakoid membranes primary photosynthetic pigments chlorophyll a, chlorophyll b, carotene, and xanthophyll fix convert carbon dioxide to carbohydrates using solar energy 6CO2 + 6H2...

AQA A-level BIOLOGY (7402/1) Paper 1 MARKING SCHEME QUESTIONS AND ANSWERS 2024 SPECIMEN VI Question 1: (a) Describe what is meant by the term 'metabolic rate'. [2] (b) Explain how the control of body temperature is an example of homeostasis. [4] Answer 1: (a) 'Metabolic rate' refers to the rate at which chemical reactions occur within an organism's cells. It's a measure of the amount of energy expended by an organism per unit of time. (b) The control of body temperature is ...

AQA A-level BIOLOGY (7402/1) Paper 1 PREDICTION QUESTIONS AND ANSWERS 2024 SPECIMEN VI Question 1: (a) Describe what is meant by the term 'metabolic rate'. [2] (b) Explain how the control of body temperature is an example of homeostasis. [4] Answer 1: (a) 'Metabolic rate' refers to the rate at which chemical reactions occur within an organism's cells. It's a measure of the amount of energy expended by an organism per unit of time. (b) The control of body temperature is...