AQA Biology Required Practicals Quiz

What are the three main practicals covered in the AQA Biology Paper 1?

• Photosynthesis, Respiration, and Enzymes

• Microscopes, Osmosis, and Food Tests

• Cells, Tissues, and Organs

• Genetics, Evolution, and Ecology

How do you calculate the total magnification of a microscope?

• Multiply the eyepiece and objective lens magnifications

• Subtract the objective lens magnification from the eyepiece magnification

• Divide the eyepiece magnification by the objective lens magnification

• Add the eyepiece and objective lens magnifications

What is the purpose of adding a dye, such as iodine, when preparing a microscope slide?

• To clean the slide

• To stain the cells for better visibility

• To protect the microscope lenses

• To increase the magnification

In the osmosis practical, what is the movement of water through?

• A fully permeable membrane

• A selectively permeable membrane

• A partially permeable membrane

• A non-permeable membrane

What happens to the mass of a vegetable piece when it gains water during the osmosis experiment?

• The mass remains the same

• The mass increases

• The mass decreases

• The mass fluctuates

What is the expected color change when iodine is added to a food sample containing starch?

• Purple to pink

• Red to yellow

• Orange to black

• Blue to green

Which solution is used to test for the presence of sugar in a food sample?

• Iodine solution

• Biuret solution

• Benedict's solution

• Sudan III

What is the color change when Benedict's solution indicates a high sugar content?

• Orange to black

• Blue to orange

• Green to yellow

• Purple to pink

Which test is used to detect proteins in a food sample?

• Iodine test

• Benedict's test

• Biuret test

• Sudan III test

What color change indicates the presence of protein when using the Biuret test?

• Blue to purple

• Orange to black

• Green to yellow

• Red to brown