B1 and B2 Revision For EOY Biology Exam

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Question Answer
What is a Eukaryotic Cell? A Eukaryotic cell is a cell which does contain a nucleus.
What parts of a cell do plants have that animal cells do not? Vacuole, Chloroplasts, Cell Wall.
What is the role of a ribosome? Where proteins are made in the cell.
How do Prokaryotic cells reproduce? (Cells without a nucleus) Binary Fission.
What is the equation to find the Magnification of a Microscope? M=I/A Magnification= Image size/ Actual size
What 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.
What is photosynthesis? Photosynthesis is the reaction within a plant where carbon dioxide diffuses into the plant and oxygen is given out from the plant.
What is an Enzyme? An enzyme is a chemical catalyst that speeds up the reaction of breaking down foods and substances.
What is the role of a Mitochondrion/a? Produces energy within the cell using Aerobic Respiration
What is the role of a cell wall? To keep the shape and structure of a plant cell.
How 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.
What is the optimum temperature for enzymes? 37 Degrees Celsius
Name 3 Enzymes and the foods which they act upon Carbohydrase=Carbohydrates Protease-Proteins Lipase-Lipids (Fats and oils)
Name the products made from these 3 Enzymes Carbohydrase=Sugars and Glucose Protease=Amino Acids Lipase=Glycerol and Fatty Acids
What 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.
What 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.
State the role of the cell membrane. The role of the cell membrane is to control what enters and exits its cell.
What do chloroplasts do within a plant cell? Chloroplasts take in light energy and convert it into chemical energy using photosynthesis.
What 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.
What is Haemoglobin's job in Red Blood Cells? Haemoglobin transports oxygen around the body.
Name 3 adaptations of
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