Download Year 12 Revision Quiz

Year 12 Revision Quiz
1. What is the resolution of a light
microscope?
• About 200nm
2. What is the width of a phospholipid
bilayer
• About 10nm
3. Name the bond in glycogen
• Glycosidic
4. What is the formula for the area of a
circle?
• πr²
5. Draw cells in metaphase of mitosis
and meiosis?
6. What is the sequence of stages in
interphase?
• G1, S, G2
7. What happens in S phase?
• DNA is replicated
8. What is the process of cell division
called ?
• cytokinesis
9. What happens at checkpoint G2?
• Cell size checked ,
• DNA replication
• Look for damage to DNA
10. Which organelles are involved in
cytokinesis?
• Microtubules/cytoskeleton
• Mitochondria
• Vesicles/golgi
11. Which enzyme is needed for DNA
replication?
• DNA polymerase
12. Draw a neutrophil?
13. How are erythrocytes adapted?
• Biconcave shape
• Contain haemoglobin
• No nucleus
14. What is the effect of the lack of a
nucleus/organelles?
• More space for haemoglobin
• No organelles so can’t respire etc
15. How is cell wall of a prokaryote
different to a plant ?
• Prokaryote has peptidoglycan
• Plants have cellulose
16. If there is 13% Guanine what
percentage is Thymine??
• 37%
17. How many H bonds are there
between A and T?
•2
18. Write the classification sequence
that follows Domain, Kingdom?
• Phylum,
• Class,
• Order,
• Family,
• Genus,
• Species
19. Why conserve species?
• Preserve biodiversity
• Aesthetic reasons/economic
• Preserve gene for medical advances
• Maintain food webs/balance ecosystem
20. What 2 factors does the Simpsons
biodiversity Index include?
• Species evenness and species
richness
21. What happens to blood oxygen
saturation as carbon dioxide levels
rise?
• Falls (Bohr Effect)
22. 2 difference between transpiration
and translocation?
• Translocation requires energy/ goes
up and down/ carried in the phloem
23. What is the role of SER?
• Makes/modifies lipids and steroids
24. What is the role of cholesterol in
membranes?
• Maintains fluidity of the membrane
(not rigidity)
25. What is the role of histones ?
• DNA wound onto them
26. How would you measure the
glucose concentration after the
digestion of starch by amylase?
• Heat with Benedict’s solution
• Calibration curve with known
concentrations
• Read of the colorimter reading
27. How would fatty acid concentration
from a lipid digestion be measured??
• Measure the pH of the solution It
would decrease as the lipid was
digested to form fatty acids
28. Name 2 sources of genetic
variation?
• Independent assortment
• Crossing over
• Mutation
29.How would you make the effect of
detergent conc on beetroot discs
valid?
• Same size /surface area of discs
• Same volume of detergent
• Same temperature
• Use the same beetroot/from same part of the beetroot
• Dry discs before weighing
(Don’t give controls that have been already described in the
experimental details)
30. What does the Golgi apparatus do?
• Modifies proteins
• exocytosis