Curriculum
Course: Alhussan Biology — Stage 7
Login

Curriculum

Alhussan Biology — Stage 7

Chapter 1: Classification and Life

0/28

Chapter 2: Cells and Organisation

0/28

Chapter 3: Microorganisms and Decomposers

0/21

Chapter 4: The Physical Environment and Water Cycle

0/11
Quiz

2.4 Using a microscope — Quiz

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 50
  • Passing grade: B+
Start Quiz
1.
Which is the correct definition of “Magnification”?
Part that controls how much light reaches the specimen.
Thin outer layer too thin to see with a light microscope.
A microscope using electron beams, magnifying up to a million times.
How many times bigger the image is than the real object.
2.
Which statement is correct?
Stains can make the nucleus look dark purple.
A thick specimen gives the clearest image.
Air bubbles are cells.
Start with the highest power objective.
3.
Measured image width of a cell at each magnification. At what value of "Magnification" is "Image width (mm)" greatest?
Dr Dabour Hub Academy - figure 1
200
100
500
400
4.
Which statement is NOT correct?
Image size = actual size ÷ magnification.
A dark image means the diaphragm should be opened.
A ×10 eyepiece with a ×40 objective gives ×400.
All quantities in the formula must have the same units.
5.
Widths of cells measured by students. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
6.
Number of cells seen in the field of view at each magnification. By how much does "Cells in view" change between 40 and 1000?
Dr Dabour Hub Academy - figure 3
249
199
201
1
7.
An eyepiece is ×10 and the objective ×4. What is the total magnification?
400
4
14
40
8.
Which term matches this definition? “How many times bigger the image is than the real object.”
Multicellular organism
Magnification
Cell theory
Electron microscope
9.
Which term matches this definition? “Adjusting the microscope until the image is sharp.”
Single-celled organism
Nerve cell
Cilia
Focus
10.
A drawing is 20 mm wide at ×100. What is the actual width in mm?
5.00 mm
0.20 mm
2000.00 mm
2.00 mm
11.
Which is the correct definition of “Stain”?
A structure inside a cell with a particular job.
A microscope using electron beams, magnifying up to a million times.
An organism made of many cells working together.
A dye that makes colourless cell parts visible.
12.
Which statement is correct?
Biological drawings should be shaded.
Mitochondria are easily seen with a school microscope.
A dark image is fixed by closing the diaphragm.
A blurred image means the focus needs adjusting.
13.
A drawing is 20 mm wide at ×200. What is the actual width in mm?
4000.00 mm
0.10 mm
1.00 mm
10.00 mm
14.
Which term matches this definition? “Part that controls how much light reaches the specimen.”
Multicellular organism
Diaphragm
Cell
Electron microscope
15.
Widths of cells measured by students. Which has the greatest value?
Dr Dabour Hub Academy - figure 4
Potato
Cheek
Elodea
Onion
16.
An eyepiece is ×10 and the objective ×40. What is the total magnification?
50
4000
4
400
17.
Measured image width of a cell at each magnification. What is the value of "Image width (mm)" when "Magnification" is 200?
Dr Dabour Hub Academy - figure 5
10
15
20
5
18.
Total magnification with a ×10 eyepiece. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
19.
Which term matches this definition? “A stain used for cheek cells.”
Methylene blue
Chloroplast
Cell theory
Microvilli
20.
Which term matches this definition? “The lens you look through, often ×10.”
Electron microscope
Stain
Focus
Eyepiece lens
21.
Widths of cells measured by students. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
22.
Widths of cells measured by students. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
23.
Which statement is NOT correct?
Lower the coverslip slowly to avoid air bubbles.
Always start with the lowest power objective.
Label lines are drawn with a ruler.
Biological drawings should be shaded.
24.
Which statement is correct?
A microscope can be carried by its lens.
A ×10 eyepiece with a ×40 objective gives ×400.
Image size = actual size ÷ magnification.
Air bubbles are cells.
25.
An eyepiece is ×15 and the objective ×10. What is the total magnification?
150
15
25
1500
26.
Which is the correct definition of “Methylene blue”?
Tiny structures where proteins are made.
A stain used for cheek cells.
A dye that makes colourless cell parts visible.
Organelle seen only with an electron microscope, where proteins are made.
27.
Widths of cells measured by students. What is the total of all the values?
Dr Dabour Hub Academy - figure 9
706
576
265
641
28.
Which statement is correct?
Air bubbles are cells.
A microscope can be carried by its lens.
Biological drawings should be shaded.
A dark image means the diaphragm should be opened.
29.
Number of cells seen in the field of view at each magnification. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
30.
A drawing is 50 mm wide at ×200. What is the actual width in mm?
10000.00 mm
4.00 mm
0.25 mm
2.50 mm
31.
An eyepiece lens is ×10 and the objective lens is ×40. What is the total magnification?
400
4000
50
4
32.
A drawing is 80 mm wide at ×100. What is the actual width in mm?
8000.00 mm
0.80 mm
1.25 mm
8.00 mm
33.
Which statement is correct?
Start with the highest power objective.
Carry a microscope with two hands.
Biological drawings should be shaded.
Total magnification = eyepiece + objective.
34.
A cell is 50 µm wide and viewed at ×100. How wide is the image in mm?
10 mm
5000 mm
50 mm
5 mm
35.
Which is the correct definition of “Eyepiece lens”?
A solution of sugars and salts inside the vacuole.
A long cell that carries electrical messages.
Controls the cell and contains the genes.
The lens you look through, often ×10.
36.
Which statement is correct?
Label lines should cross.
Mitochondria are easily seen with a school microscope.
Biological drawings have no shading.
Start with the highest power objective.
37.
Biological drawings have no ____.
lines
title
shading
labels
38.
Biological drawings should be made with a sharp ____ and have no shading.
crayon
pencil
pen
marker
39.
The best light microscopes magnify up to about ____ times.
10
1000
1 million
100
40.
All quantities in the formula must have the same ____.
units
stain
colour
size
41.
Total magnification = eyepiece × ____.
objective
lamp
slide
stage
42.
Image size = actual size × ____.
stain
area
time
magnification
43.
Small objects are measured in ____.
litres
kilometres
micrometres
kilograms
44.
Carry a microscope with ____.
one finger
the stage only
two hands
the lens
45.
True or false? A specimen must be thin enough for light to pass through.
True
False
46.
True or false? Air bubbles are cells.
True
False
47.
True or false? A microscope can be carried by its lens.
True
False
48.
True or false? Mitochondria are easily seen with a school microscope.
True
False
49.
True or false? Start with the highest power objective.
True
False
50.
True or false? Carry a microscope with two hands.
True
False
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
Part of Chapter 2: Cells and Organisation — see every lesson and quiz in this unit.
Accepted payment methods