Ocr 21st century Biology B7 revision quiz. Watch

redtortoise
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I the light of our exam I thought I would create a quiz thread so Ill post a question, then you post an answer with another question for the next person.

Name a pro of using genetic modification to make insulin.
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kited4
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you can produce large amounts very easily

What are the symptoms of sickle cell anemia
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Swimmer123
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Symptoms include physical weakness, pain, fever, and could lead to heart failure or brain damage

What is meant by compensation point?
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Bobby2
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The compensation point occurs when the respiration rate equals the photosynthesis rate i.e. the co2 made during respiration equals the amount of c02 used during photosynthesis.

What are the main steps in genetic modification?
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redtortoise
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A plasmid is used as a vector, the plasmid is opened using restriction enzymes, then the desired dna cut using restriction enzymes and is inserted to the plasmid. The plamid is then inserted into the cell. If the dna sequence is to large a virus is used.

Which blood types can give to a person with A blood type.
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Swimmer123
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Blood types A and O

What is the role of red blood cells?
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swaine.
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to transport oxygen around the body

Name the three main things plant use oxygen for?
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misspig
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Are you sure you ment that?

Give three reasons why treatments may need to be modified.
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Azzy G
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Because its not producing any improvement
Because its causing damage
Because its producing side effects that are dangerous

Why is it important for Practioners to keep records?
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redtortoise
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So then can remeber records and previous treatments, so they can monitor progress and share information.

Name the parts of a synovial joint.
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misspig
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Synovial fluid, membrane and cartilidge, ligaments,
What is the difference between aerobic and anaerobic respiration.
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swaine.
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aerobic respiration uses oxygen, where as anaerobic respiration doesn't. The body Mainly uses aerobic respiration and only resorts to anaerobic respiration when the demand for aerobic respiration is greater than the body can provide. During the process of anaerobic respiration the glucose is only partially broken down and lactic acid is also produced.

What is gas exchange?
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redtortoise
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The removal of co2 and intake of oxygen.

What is ATP synthisised from?
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Angelica.
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ADP.

What is the relationship between sickle cell anaemia and malaria?
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redtortoise
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Where maleria is common sickle cell anaemia is also common because it provides some imunity so more chance to pass the faulty allele on.

What does RICE stand for?
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swaine.
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R - Rest
I - Ice
C - Compression
E - Elevation

Which ABO blood type is an universal recipiant and which ABO blood type is an universal donor?
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redtortoise
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AB universal recipiant 0 universal donor

Name a feature of a parasite which helps it to survive.
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Angelica.
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Parasites such as Tapeworms are able to grip on to the gut wall/ intestines through the use of hooks, this enables them to absorb food.

Give advantages and disadvantages of using pyramid of numbers and the pyramid of biomass.
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JLKeating
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(Original post by Angelica.)
Parasites such as Tapeworms are able to grip on to the gut wall/ intestines through the use of hooks, this enables them to absorb food.

Give advantages and disadvantages of using pyramid of numbers and the pyramid of biomass.
Pyramid of numbers accurately shows how many of each species is in a habitat but gives no indication of the biomass and so doesn't show the energy available to the next trophic level. A pyramid of numbers isn't always pyramid shaped. A pyramid of biomass shows how much food is available to the next level and is always pyramid shaped.

What is the purpose of ligaments in a joint?

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redtortoise
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To hold the bones together.

Name the four components of soil.
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