Cells and the microscope Flashcards

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1
Q

What’s the nucleus function?

A

Code to make protein

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2
Q

Where is the nucleus found?

A

In all cells but not bacteria cells

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3
Q

What’s the structure of the nucleus?

A

Contains chromatin/chromosomes which is the organisms DNA

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4
Q

What is an organelle ?

A

An organelle is a membrane enclosed structure within a cell with a specialised function

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5
Q

What’s the plural for mitochondria?

A

Mitochondrion

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6
Q

What’s the structure of mitochondria?

A

Contains outer membrane and a folded inner membrane
It’s also contains mitochondrial DNA

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7
Q

What’s the function of mitochondria?

A

Aerobic respiration occurs in the mitochondrion releasing energy

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8
Q

Where is the chloroplast found?

A

In plants specifically

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9
Q

What’s the structure of chloroplasts?

A

Contains pigments called chlorophyll

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10
Q

What’s the function of chloroplasts?

A

Photosynthesis occurs in the chloroplasts producing food for the plant

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11
Q

Where is the vacuole found?

A

In most cells, but plants cells have a larger vacuole

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12
Q

What’s the structure of the vacuole?

A

Fluid filled storage sac

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13
Q

What’s the function of the vacuole?

A

The vacuole stored nutrients and wastes

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14
Q

What is another words for cell membrane?

A

Plasma membrane

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15
Q

Where is the cell membrane found?

A

In all cells

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16
Q

What’s the structure of the cell membrane?

A

Made of phospholipids and protein

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17
Q

What are the two functions of cell membrane?

A

1.Cell membranes are semi-permeable
2.Cells membrane gives structure and support

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18
Q

Where is the cell wall found?

A

In plant cells,fungal cells,bacterial cells

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19
Q

What’s the structure of the cell wall in plant cells?

A

Carbohydrate cellulose

20
Q

What is the structure of the cell wall in fungi

A

Carbohydrate chitin

21
Q

What does the ribosome NOT have?

A

A cell membrane

22
Q

Where is the ribosome found?

A

All cells

23
Q

What’s the structure of the ribosome?

A

Contains a large and small subnit

24
Q

What’s the function on ribosome?

A

Make protein

25
Q

What is cytoplasm?

A

Fluid in a cell with organelle suspended

26
Q

Whats cytosol?

A

Cytoplasm minus the organelle

27
Q

What does the eyepiece lens do?

A

Magnifies sample

28
Q

What does the course focus wheel do?

A

Coarsely focus/magnifies sample

29
Q

What does the diaphragm do?

A

Controls the amount of light/adjusts light

30
Q

What does the objective lens do?

A

Directly observes the object the microscope user is examining

31
Q

What does the fine focus wheel do?

A

Finely focuses the sample

32
Q

What does the stage do?

A

Hold the sample

33
Q

What plant cell is used for viewing under a microscope

A

Onion cells

34
Q

What stain is used for onion cells?

A

Iodine

35
Q

At what angle is the coverslip placed at?

A

45 degrees

36
Q

What is used to place the coverslip?

A

A needle

37
Q

What thickness is the onion cell?

A

A thin piece of translucent onion cell

38
Q

What animal cell is used to view under a microscope

A

Cheek cells

39
Q

How do you obtain the animal cell?

A

Using a cotton ball, swab inside of cheek

40
Q

What stain is used for an animal cell?

A

Methylene blue

41
Q

What’s the purpose of the of the iodine stain?

A

Stains the nucleus and cell wall brown-more visible under the microscope

42
Q

Whats the purpose of methylene blue?

A

Stains nucleus blue and cytoplasm light blue-more visible under the microscope

43
Q

Why was water added to the tissues?

A

To prevent it from drying out

44
Q

How were the stains and water added?

A

A dropper

45
Q

What is the purpose of the coverslip?

A

1.Protect the lens
2.prevent the cells/tissue of drying out

46
Q

Why is the sample always viewed under low power first?

A

1.To get a general view before a more detailed one
2.To prevent lens damage

47
Q

What’s the calculation method to find the size of the image?

A

Total magnification-eyepiece magnification-objective magnification