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Science > Animals Cells > Flashcards

Animals Cells Flashcards

1
Q

What is a cell?

A

A cell is the smallest working unit of a living thing ( organism)

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2
Q

What are the characteristics of a living thing?

A

Movement, reproduction, sensitivity,feeding,excretion,respiration,growth

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3
Q

What is the rough estimation of how many cells are in a living thing?

A

Billions

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4
Q

What object needs to be required to see a cell?

A

A microscope

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5
Q

Who was the first person to see a cell under a microscope?

A

Robert Hooke

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6
Q

What are the different types of cells?

A

Blood cells,skin cells,nerve cell, animal,cell ,sperm cell

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7
Q

Who has cells?

A

All living things

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8
Q

What is a unicellular?

A

Made up of only 1 cell e.g. bacteria

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9
Q

What is a multicellular?

A

Many cells e.g. human

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10
Q

What are the parts of a microscope?

A

Stage,eyepiece,nosepiece,course focus wheel,light,fine focus wheel,objective lense

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11
Q

What is the function of an eyepiece?

A

To magnify and view the specimen

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12
Q

What is the function of a light?

A

To see the specimen

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13
Q

What is the function of a course focus wheel?

A

To focus the specimen roughly

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14
Q

What is the function of a fine focus wheel?

A

To fine-tune the image of the specimen

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15
Q

What is the function of a stage?

A

To hold the specimen (glass slide)

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16
Q

What is the function of the objective lens?

A

To magnify the specimen

17
Q

What are the parts of the animal cell?

A

Nucleus, mitochondria,cell membrane,cytoplasm,ribosome

18
Q

What is the function of a cell membrane?

A

Mostly made up of fat,protects the cell and allows substances in and out of the cell

19
Q

What is the function of the nucleus?

A

Carries genes,which control the activities of the cell

20
Q

What is the function of the cytoplasm?

A

A watery fluid of salts and food in which cells float

21
Q

What is the function of the mitochondria?

A

Where energy is released from food in respiration

22
Q

What is the function of the ribosome?

A

Makes protein (ie hormones enzymes

23
Q

What equipment do you need for a cheek cell experiment?

A

Microscope, sample…cheek cells,cotton bud, methylene blue,slide,cover slip

24
Q

What is the method for a cheek cell experiment?

A
  1. Use a clean lollipop stick to clean the inside of the cheek.
    2.rub the stick gently across a clean glass slide. Allow the cells to dry onto the slide.
    3.add 1 drop of methylene blue stain to the cheek cells.
  2. Tilt the slide so that the stain covers the cheek cell
    6.place a cover slip onto the slide at a 45 degree angle and lower gently to avoid air bubbles
25
Q

How do you calculate the magnification caused by a light microscope?

A

Multiply the eyepiece magnification by the objective lens magnification

Science (8 decks)

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