Magnification of cells Practice exercise 1

What is magnification?   (1 mark)

What is magnification?   (1 mark)

What is magnification?   (1 mark)

What is magnification?   (1 mark)

How do you calculate the total magnification of a specimen using a light microscope?   (1 mark)

How do you calculate the total magnification of a specimen using a light microscope?   (1 mark)

How do you calculate the total magnification of a specimen using a light microscope?   (1 mark)

\( \times 10 \times \times 40 = \times 400 \)   (1 mark)

If the eyepiece lens is ×10 and the objective lens is ×40, what is the total magnification?   (1 mark)

If the eyepiece lens is ×10 and the objective lens is ×40, what is the total magnification?   (1 mark)

If the eyepiece lens is ×10 and the objective lens is ×40, what is the total magnification?   (1 mark)

If the eyepiece lens is ×10 and the objective lens is ×40, what is the total magnification?   (1 mark)

Name the two main lenses used in a light microscope to magnify a specimen.  (2 marks)

Name the two main lenses used in a light microscope to magnify a specimen.  (2 marks)

Name the two main lenses used in a light microscope to magnify a specimen.  (1 mark)

Why is it important to use higher magnification when observing cell structures?   (1 mark)

Why is it important to use higher magnification when observing cell structures?   (1 mark)

Why is it important to use higher magnification when observing cell structures?   (1 mark)

While using a microscope with a ×10 eyepiece and a ×4 objective lens, a student notices that she cannot see the nucleus of the onion cell clearly. Explain why she is unable to see the nucleus and what she should do to improve her observation.  (2 marks)

While using a microscope with a ×10 eyepiece and a ×4 objective lens, a student notices that she cannot see the nucleus of the onion cell clearly. Explain why she is unable to see the nucleus and what she should do to improve her observation.  (2 marks)

While using a microscope with a ×10 eyepiece and a ×4 objective lens, a student notices that she cannot see the nucleus of the onion cell clearly. Explain why she is unable to see the nucleus and what she should do to improve her observation.  (2 marks)

While using a microscope with a ×10 eyepiece and a ×4 objective lens, a student notices that she cannot see the nucleus of the onion cell clearly. Explain why she is unable to see the nucleus and what she should do to improve her observation.  (2 marks)

During a science class, students were assigned to observe different parts of a cell using various objective lenses.Match each structure below to the most suitable objective lens and explain why your choice is appropriate. (3 marks) (a)Chloroplasts. (b)Nucleus. (c) General cell shape.

During a science class, students were assigned to observe different parts of a cell using various objective lenses.Match each structure below to the most suitable objective lens and explain why your choice is appropriate. (3 marks) (a)Chloroplasts. (b)Nucleus. (c) General cell shape.

During a science class, students were assigned to observe different parts of a cell using various objective lenses.Match each structure below to the most suitable objective lens and explain why your choice is appropriate. (3 marks) (a)Chloroplasts. (b)Nucleus. (c) General cell shape.

During a science class, students were assigned to observe different parts of a cell using various objective lenses.Match each structure below to the most suitable objective lens and explain why your choice is appropriate. (3 marks) (a)Chloroplasts. (b)Nucleus. (c) General cell shape.

During a science class, students were assigned to observe different parts of a cell using various objective lenses.Match each structure below to the most suitable objective lens(high, medium or low) and explain why your choice is appropriate. (3 marks) (a)Chloroplasts. (b)Nucleus. (c) General cell shape.

During a science class, students were assigned to observe different parts of a cell using various objective lenses.Match each structure below to the most suitable objective lens(high, medium or low) and explain why your choice is appropriate. (3 marks) (a)Chloroplasts. (b)Nucleus. (c) General cell shape.

You are asked to observe the cell membrane of a plant cell. You have three objective lenses to choose from: ×10, ×40, and ×100. Which objective lens would you choose and why?  (2 marks)

You are asked to observe the cell membrane of a plant cell. You have three objective lenses to choose from: ×10, ×40, and ×100. Which objective lens would you choose and why?  (2 marks)

You are asked to observe the cell membrane of a plant cell. You have three objective lenses to choose from: ×10, ×40, and ×100. Which objective lens would you choose and why?  (2 marks)

In a science lesson, Amina is asked to observe a slide of animal cells using a microscope. She selects an eyepiece lens of ×10 and an objective lens of ×10. Calculate the total magnification Amina used. Then explain whether this setting is suitable for seeing the nucleus clearly, and suggest what she can do if it is not.  (3 marks)

In a science lesson, Amina is asked to observe a slide of animal cells using a microscope. She selects an eyepiece lens of ×10 and an objective lens of ×10. Calculate the total magnification Amina used. Then explain whether this setting is suitable for seeing the nucleus clearly, and suggest what she can do if it is not.  (3 marks)

In a science lesson, Amina is asked to observe a slide of animal cells using a microscope. She selects an eyepiece lens of ×10 and an objective lens of ×10. Calculate the total magnification Amina used. Then explain whether this setting is suitable for seeing the nucleus clearly, and suggest what she can do if it is not.  (3 marks)

Brian used a microscope with a ×10 eyepiece and a ×40 objective lens. He calculated the total magnification as ×50.Identify and explain the mistake in his calculation and state the correct magnification.  (2 marks)

Brian used a microscope with a ×10 eyepiece and a ×40 objective lens. He calculated the total magnification as ×50.Identify and explain the mistake in his calculation and state the correct magnification.  (2 marks)

Brian used a microscope with a ×10 eyepiece and a ×40 objective lens. He calculated the total magnification as ×50.Identify and explain the mistake in his calculation and state the correct magnification.  (2 marks)

Brian used a microscope with a ×10 eyepiece and a ×40 objective lens. He calculated the total magnification as ×50.Identify and explain the mistake in his calculation and state the correct magnification.  (2 marks)