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full notes to unit 1 topic 2 a level biology
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WJEC & Eduqas NotesCell Structure, Tissues &
Viruses
WJEC Unit 1
Eduqas Core Concepts
STUDY CHECKLIST AND ASSESSMENT
OBJECTIVES
,Instructions
• Regular revision throughout the year is essential. It’s vital you keep a track of what you
understand and what you don’t understand. This booklet is designed to help you do this. Use
the following key to note how well you understand the work after your revision. Put the
letter R, A or G in the table. If you place an R or an A then you should make a note of what
you are struggling with and the end of this book under the relevant section and seek help
with this.
Key
• R = Red. I am not confident about my knowledge and understanding.
• A = Amber. I am fairly confident about my knowledge and understanding.
• G = green. I am very confident about my knowledge and understanding.
The following points are your learning objectives.
Cell Structure and Organisation.
Ultra Structure of Cells
1. Can you identify the following organelles from an electron micrograph and a drawing of a cell:
Mitochondria, chloroplast, rough endoplasmic reticulum, smooth endoplasmic reticulum, Golgi body,
ribosome, vacuole, plasma (cell) membrane, centrioles, cilia, nucleus, nucleolus, nuclear membrane,
pores, lysosomes, plasmodesmata and vesicles.
2. Can you state the functions of all the organelles in point 1?
3. Do you know the relative sizes of the organelles in point 1?
4. Can you describe the cell theory?
5. Do you understand the term: “organelles provide membrane bound compartments within the cell”?
6. Can you draw a fully labelled diagram of a mitochondria and a chloroplast?
7. Can you state the similarities and differences between a chloroplast and a mitochondrion?
8. Can you explain why mitochondria can look different when seen under the electron micrograph or
in diagrams?
9. Can you explain why all organelles can be seen by an electron microscope but only the nucleus
and chloroplast can be seen by the light microscope.
, 10. Can you compare the structure of a plant cell with that of an animal cell?
11. Can you fully describe the fate of amino acids from when they enter the cell to when they leave th
as proteins? You must be able to describe the functions of the: nucleus, nucleolus, ribosome, roug
endoplasmic reticulum, Golgi body and cell membrane. Also there is a link to membrane structure
transport with regard to endocytosis and exocytosis.
Prokaryotic and Eukaryotic cells
12. Can you compare and contrast a prokaryotic and a eukaryotic cell?
13. Can you recognise a prokaryotic cell from a diagram and electron micrograph?
14. Can you draw and fully label a prokaryotic cell?
Tissues and Organs
15. Can you define a tissue and an organ?
16. Can you name several different tissues and organs?
17. Can you describe the function of several tissues in relation to their structure?
18. Can you recognise tissues from a diagram?
Viruses
19. Can you describe the basic structure of a virus?
20. Can you compare the structure of a virus with a eukaryotic and prokaryotic cell?
Application of Knowledge
21. Can you apply your knowledge of cells and tissues to unfamiliar scenarios?
Assessment Objective Description
AO1 Demonstrate knowledge and understanding of scientific ideas, processes, te
AO2 Apply knowledge and understanding of scientific ideas, processes, techniqu
• In a theoretical context
• In a practical context
• When handling qualitative data
• When handling quantitative data
AO3 Analyse, interpret and evaluate scientific information, ideas and evidence, i
to: • Make judgments and reach conclusions
• Develop and refine practical design and procedures
, The ability to select, organise and communicate information and ideas coherently using
appropriate scientific conventions and vocabulary will be tested across the AO.
4
WORD BANK
Below is a list of some key words and phrases you will need to learn and understand.
39. Light microscope
1. 70s ribosome 40. Lysosomes
2. 80s ribosome
41. Magnification
3. Aerobic respiration
42. Matrix
4. ATP
43. Micrometre (µm)
5. Cell 44. Microvilli
6. Cell membrane
45. Millimetre (mm)
7. Cell wall 46. Mitochondria
8. Centimetre (cm) 47. Murein
9. Centrioles 48. Nanometre (nm)
10. Chloroplast 49. Nuclear envelope
11. Chromatin 50. Nuclear pore
12. Ciliated columnar epithelium 51. Nuclear pore
13. Cilli 52. Nucleolus
14. Cisternae 53. Organ
15. Columnar epithelium 54. Organ system
16. Cristae 55. Peptidoglycan
17. Cuboidal epithelium 56. Phospholipid bilayer
18. Double membrane 57. Plane of cut
19. Electron 58. Plasmid
20. Endocytosis 59. Plasmodesmata
21. Endoplasmic reticulum 60. Prokaryotic
22. Eukaryotic 61. proteins
23. Exocytosis 62. Resolution
24. Flagella 63. Rough endoplasmic reticulum
25. Flattened sacs 64. Scale
26. Free ribosome 65. Scanning electron microscope
27. Goblet cell 66. Self-replication
28. Golgi body 67. Smooth endoplasmic reticulum
29. Granum 68. Stalked particle
30. Highly folded inner membrane 69. Starch grain
31. Histones 70. Stroma
32. Hydrolytic enzymes 71. Thylakoid
33. Increases the surface area for chemical 72. Tissue
reactions 73. Transmission electron microscope
34. Intercellular 74. Vesicle
35. Interconnected flattened sacs 75. Wavelength of light
36. Inter-granum lamellae 76. Wavelength of an electron
37. Intermembrane space
38. Intracellular
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