Magnification equation - Study guides, Class notes & Summaries

Physics lights and sound Qs&As 2024 Magnification - Answer-Height of image/height of object power of lens equation - Answer-1/focal length specular reflection - Answer-Reflection from smooth flat surface diffuse reflection - Answer-Surface is rough Light is scattered Distorts image When the angle of refraction is 90 degrees - Answer-Angle of incidence is called critical angle total internal reflection - Answer-Angle i> critical angle Refraction - Answer-Angle < critical angle U...

Question Marking Guidance Mark Comments 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) Question Marking Guidance Mark Comments 01.2 1. Facilitated diffusion of amino acid (into cell when higher concentration in lumen); 2. Co-transport; 3. S...

AQA GCSE Biology - Paper 1 Final Exam Prediction Questions 2024.What does a nucleus do? - CORRECT ANSWER It contains genetic material and controls the activities of the cell What does cytoplasm do? - CORRECT ANSWER It's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - CORRECT ANSWER It holds the cell together and controls what goes in and out What do mitochondria do? - CORRECT ANS...

AQA GCSE Biology - Paper 1 exam 2024 latest update graded A+ What are muscle cells specialised for and how are they specialised? - ANSWER>>>Contraction - they need to contract quickly -They are long so they have space to contract -They contain lots of mitochondria to generate the energy needed for contraction What are root hair cells specialised for and how are they specialised? - ANSWER>>>Absorbing water and minerals -They are cells on the surface of plant roots which grow i...

What does a nucleus do? - ANSWER-It contains genetic material and controls the activities of the cell What does cytoplasm do? - ANSWER-It's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - ANSWER-It holds the cell together and controls what goes in and out What do mitochondria do? - ANSWER-These are where most of the reactions for aerobic respiration occur. Respiration transfers e...

What is an electron microscope? (SB1a) - correct answer Microscopes that send beams of electrons through a specimen to build up an image. What is meant by an instrument's resolution? (SB1a) - correct answer The smallest distance between two visible points Why can some cell structures be seen with an electron microscope but not with a light microscope? (SB1a) - correct answer ...

AQA GCSE Biology - Paper 1 Exam Questions With 100% Correct Answers What does a nucleus do? - answerIt contains genetic material and controls the activities of the cell What does cytoplasm do? - answerIt's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - answerIt holds the cell together and controls what goes in and out What do mitochondria do? - answerThese are where most of the r...

AQA GCSE Biology - Paper 1 Exam Questions With 100% Correct Answers What does a nucleus do? - answerIt contains genetic material and controls the activities of the cell What does cytoplasm do? - answerIt's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - answerIt holds the cell together and controls what goes in and out What do mitochondria do? - answerThese are where most of the r...

What does a nucleus do? - answer It contains genetic material and controls the activities of the cell What does cytoplasm do? - answer It's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - answer It holds the cell together and controls what goes in and out What do mitochondria do? - answer These are where most of the reactions for aerobic respiration occur. Respiration transfers...

AQA GCSE Biology paper 1 Exam Questions and Answers 100% Correct Magnification equation - Answer️️ -Magnification= image size/actual object size Light microscope- how many um in 1 mm - Answer️️ -1000 um light microscope- how many nm in 1 um - Answer️️ -1000 nm Light microscope- why can we see the nucleus and cell wall but not the mitochondria - Answer️️ -Too small and not stained light microscope- how can we see smaller parts of cells - Answer️️ -An electron microscop...