AQA GCSE BIOLOGY FULL COURSE 9-1 ACTIVE RECALL QUESTIONS (answers available)
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New Grade 9-1 GCSE Biology for AQA
here I have converted every GCSE biology topic in the AQA course into condensed active recall questions. I am predicted a 9, using solely just this document.
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Paper 1: Required practical activity 1: use a light microscope to observe plant cells. • Required
practical activity 3: investigate the effect of a range of concentrations of salt solution on the mass of
plant tissue. • Required practical activity 4: use qualitative reagents to test for a range of
carbohydrates, lipids, and proteins.
Paper2: Required practical activity 8: investigate the effect of light on the growth of newly
germinated seedlings. • Required practical activity 9: measure the population size of a common
species in a habitat
B1 – cell structure and transport
B1.1 The world of the microscope
1) How many micrometres are there in a mm?
2) How many nanometres in 1 um?
3) How do light microscopes work?
4) How much can light microscopes magnify up to?
5) Three advantages of a light microscope?
6) When was the electron microscope invented?
7) How do electron microscopes work?
8) How much can electron microscopes magnify up to?
9) What do transmission electron microscopes do?
10) Disadvantages of electron microscopes?
11) How do you calculate magnification with a light microscope?
12) How do you work out the magnification?
13) How do you work out the size of the real object?
14) What is resolution?
15) What affects how much detail a microscope can show?
16) What is the resolving power of a light microscope ?
B1.2 Animal and plant cells
1) What structures does an animal cell consist of? (there’s 5)
2) What is the role of the nucleus in an animal cell?
3) What is the role of the cytoplasm in an animal cell?
4) What is the role of the cell membrane in an animal cell?
5) What is the role of the mitochondria in an animal cell?
6) What is the role of the ribosomes in an animal cell?
7) What is the role of the cell wall in a plant?
, 8) What are chloroplasts?
9) What is the permanent vacuole?
B1.3 Eukaryotic and prokaryotic cells
1) Examples of eukaryotic cells?
2) What are the properties of a eukaryotic cell?
3) What are chromosomes made up of?
4) Single celled living organisms are known as ?
5) Bacteria are examples of….?
6) Are prokaryotes bigger or smaller than eukaryotes?
7) In prokaryotic cells, how is genetic material stored?
8) What are plasmids?
9) What is a flagellum?
10) If something is one order of magnitude bigger, how many times
bigger is it?
11) If something is 100x bigger, it is two orders of magnitude bigger,
(to the power of what)
or 10 ?
B1.4 specialisation in animal cells
1) What do cells differentiate to form?
2) Do all specialised cells work individually?
3) What are nerve cells specialised to do?
4) Adaptations of nerve cells?
5) What does striate mean?
6) What are the three main adaptations of striated muscle cells?
7) Adaptations of sperm cells?
B1.5 specialisation in plant cells
1) What is the job of the root hair cells?
2) What does the vacuole in a root hair cell do?
, 3) Why are the chloroplasts of some plants usually positioned in
continuous layers in the leaves?
4) What is xylem?
5) what special chemical builds up in spirals in the cell walls of alive xylem
cells?
6) What happens when the cell dies?
7) What is phloem?
8) Do phloem cells die?
9) What happens to the cell walls between cells?
B1.6 Diffusion
1) What is one of the main ways that dissolved substances and gases can
move into and out of your cells?
2) What is diffusion?
3) What area to and from is the net movement of particles in diffusion?
4) What causes diffusion to happen quickly?
5) How do we calculate net movement?
6) The greater the difference in concentration, the faster the …..?
7) Diffusion occurs down…….?
8) How does temperature affect the rate of diffusion?
9) In living organisms, what does diffusion occur across?
10) What substances require diffusion?
11) Through diffusion, where does the oxygen from the air in your
lungs travel to?
12) How does carbon dioxide move through the body by diffusion?
13) What is the diffusion of oxygen and carbon dioxide in opposite
directions in the lungs knows as?
14) What is the most common adaptation to make diffusion easier
and more rapid?
15) What three things is diffusion affected by?
B1.7 Osmosis
1) What are partially permeable membranes?
2) What is a dilute solution of sugar?
, 3) What is a concentrated sugar solution?
4) Is the cytoplasm concentrated or diluted?
5) What is osmosis?
6) What does isotonic mean?
7) What does hypertonic mean?
8) What does hypotonic mean?
9) What happens to an animal cell in a hypotonic solution?
10) What happens to an animal cell in an isotonic cell?
11) What happens to an animal cell in a hypertonic cell?
12) What causes water to move into or out of the cell by osmosis?
B1.8 Osmosis in plants
1) Why is osmosis important for plants?
2) How does osmosis help support a plant?
3) What is the pressure build-up when no more water can enter a cell
known as?
4) What does turgor pressure do?
5) Should the fluid surrounding the cells be hypotonic, hypertonic, or
isotonic to the cytoplasm?
6) What happens if the solution outside the cell is hypertonic?
7) What’s wrong with a flaccid plant cell?
8) What is Plasmolysis?
9) What happens to plasmolysed cells?
10) What happens to a plant cell in an isotonic solution?
11) What happens to a plant cell in a hypertonic solution?
12) What happens to a plant cell in a hypotonic solution?
B1.9 Active transport
1) What is active transport?
2) How does active transport differ from diffusion?
3) What is an advantage of active transport?
4) What is needed for active transport?
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