Karteikarten
B1 and B2 Revision For EOY Biology Exam
Karten in diesem Stapel (21)
- 1What is a Eukaryotic Cell?A Eukaryotic cell is a cell which does contain a nucleus.
- 2What parts of a cell do plants have that animal cells do not?Vacuole, Chloroplasts, Cell Wall.
- 3What is the role of a ribosome?Where proteins are made in the cell.
- 4How do Prokaryotic cells reproduce? (Cells without a nucleus)Binary Fission.
- 5What is the equation to find the Magnification of a Microscope?M=I/A Magnification= Image size/ Actual size
- 6What does a Stent do to a blood vessel?A stent opens the passageway of a blood vessel in order to keep blood flowing through it.
- 7What is photosynthesis?Photosynthesis is the reaction within a plant where carbon dioxide diffuses into the plant and oxygen is given out from the plant.
- 8What is an Enzyme?An enzyme is a chemical catalyst that speeds up the reaction of breaking down foods and substances.
- 9What is the role of a Mitochondrion/a?Produces energy within the cell using Aerobic Respiration
- 10What is the role of a cell wall?To keep the shape and structure of a plant cell.
- 11How can an enzyme become denatured?If the body becomes too hot the enzyme can denature and lose its shape but also if the pH is not correct, it will also denature and die.
- 12What is the optimum temperature for enzymes?37 Degrees Celsius
- 13Name 3 Enzymes and the foods which they act uponCarbohydrase=Carbohydrates
Protease-Proteins
Lipase-Lipids (Fats and oils) - 14Name the products made from these 3 EnzymesCarbohydrase=Sugars and Glucose
Protease=Amino Acids
Lipase=Glycerol and Fatty Acids - 15What is the Lock and Key theory?The lock and key is a theory which states that each enzyme has a lock-like active site that only suits a certainly shaped substrate which means specific enzymes break down specific substrates.
- 16What is the Collision Theory?The Collision Theory states that the faster substrates react and collide with enzymes, the faster the rate of reaction. This means digestion happens faster.
- 17State the role of the cell membrane.The role of the cell membrane is to control what enters and exits its cell.
- 18What do chloroplasts do within a plant cell?Chloroplasts take in light energy and convert it into chemical energy using photosynthesis.
- 19What are antibodies and what do they do?Antibodies are small products of White Blood Cells that cling to pathogens and send out signals to the body so the pathogen can be killed. AN ANTIBODY IS A WAY OF KILLING PATHOGENS THAT WERE PREVIOUSLY IN THE BODY AND NOT NEW.
- 20What is Haemoglobin's job in Red Blood Cells?Haemoglobin transports oxygen around the body.
- 21Name 3 adaptations of
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