BIOLOGY OCR A LEVEL
PAPER 1
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
, Certainly! Here is the numbered list of all the information you provided:
1. Magnification of light microscope X1500
2. Resolution of light microscope 0.2 micrometers
3. Magnification of a scanning electron microscope X500000
4. Resolution of scanning electron microscope 0.002 micrometers
5. Magnification of a transmission electron microscope X1,000,000
6. Resolution of a transmission electron microscope 0.0002 micrometers
7. What can be used as a counterstain safranin dye
8. Magnification: How many times larger the image is than the actual size of the object being
viewed
9. Resolution: How detailed the image is. How well the microscope distinguishes between 2
points that are close together
10. Nucleolus: Produces ribosomes. Made of protein and RNA, which is used to make rRNA,
which combines with protein to form ribosome
11. What's the plasma membrane made of: Many lipids and proteins
12. Centrioles: Small, hollow cylinders made of microtubules
13. Microfilaments: Contractile fibres formed from actin, responsible for cell movement and
contraction during cytokinesis
14. Microtubules: Determine shape of cell and act as tracks for the movement of organelles
15. Intermediate fibres: Give cell mechanical strength and help maintain their integrity
16. Vacuoles: Membrane-lined sacs containing cell sap. Important in maintenance of turgor
17. Tonoplast: Membrane of vacuole and is selectively permeable
18. DNA in prokaryotic cells: Circular, proteins fold and condense DNA, one molecule,
chromosome
19. DNA in eukaryotic cells: Linear, associated with proteins called histones forming
chromatin, multiple chromosomes
20. Cell wall in prokaryotic cells made from: Peptidoglycan/murein
21. Cell wall in fungi made from: Chitin
22. Flagella in prokaryotic cells: Made of flagellin, arranged in a helix
PAPER 1
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
, Certainly! Here is the numbered list of all the information you provided:
1. Magnification of light microscope X1500
2. Resolution of light microscope 0.2 micrometers
3. Magnification of a scanning electron microscope X500000
4. Resolution of scanning electron microscope 0.002 micrometers
5. Magnification of a transmission electron microscope X1,000,000
6. Resolution of a transmission electron microscope 0.0002 micrometers
7. What can be used as a counterstain safranin dye
8. Magnification: How many times larger the image is than the actual size of the object being
viewed
9. Resolution: How detailed the image is. How well the microscope distinguishes between 2
points that are close together
10. Nucleolus: Produces ribosomes. Made of protein and RNA, which is used to make rRNA,
which combines with protein to form ribosome
11. What's the plasma membrane made of: Many lipids and proteins
12. Centrioles: Small, hollow cylinders made of microtubules
13. Microfilaments: Contractile fibres formed from actin, responsible for cell movement and
contraction during cytokinesis
14. Microtubules: Determine shape of cell and act as tracks for the movement of organelles
15. Intermediate fibres: Give cell mechanical strength and help maintain their integrity
16. Vacuoles: Membrane-lined sacs containing cell sap. Important in maintenance of turgor
17. Tonoplast: Membrane of vacuole and is selectively permeable
18. DNA in prokaryotic cells: Circular, proteins fold and condense DNA, one molecule,
chromosome
19. DNA in eukaryotic cells: Linear, associated with proteins called histones forming
chromatin, multiple chromosomes
20. Cell wall in prokaryotic cells made from: Peptidoglycan/murein
21. Cell wall in fungi made from: Chitin
22. Flagella in prokaryotic cells: Made of flagellin, arranged in a helix
