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Yr 8 SCIENCE > Cells > Flashcards

Cells Flashcards

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Biology 101 flashcards
1
Q

What is a Cell?

A

The basic building block of life.

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2
Q

What is Microbiology?

A

The science involving the study of microscopic organisms.

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3
Q

What is Unicellular?

A

An organism that exists as a single cell.

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4
Q

What is Eukaryotic cell?

A

Complex cell that contains a nucleus and membrane

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5
Q

What is Prokaryotic cell?

A

Celled organism that has no nucleus.

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6
Q

What is Organelle?

A

Smaller parts of a cell, each one having a different function.

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7
Q

What is cell theory?

A

It is the historic scientific theory which is now universally accepted.

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8
Q

What is Multicellular?

A

An organism that has two or more cells.

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9
Q

What are the three main components of every cell?

A
  • Cell membrane
  • Cytoplasm
  • Organelles
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10
Q

What is cell membrane?

A

It is separated cells from other cells and the cell contents from the outside and it is very thin.

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11
Q

What is Cytoplasm?

A

It is the “factory floor” of the cell. It is a substance that fills the space between the cell membrane and it is 75 - 90 % water.

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12
Q

What is Photosinthesis?

A

It is chemical process that plants use to make glucose and oxygen from carbon dioxide and water.

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13
Q

What are cell structures?

A

All cells regardless of which type of organism they are found in, share the same basic structure.

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14
Q

What is a DNA?

A

It contains the instructions for every job your cells need to do and is passed from one generation to the next.

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15
Q

What are the 4 vey important membrane-bound organelles in the cell?

A

Mitochondria, Ribosomes, Chloroplasts and Vesicles.

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16
Q

What is Mitochondria?

A

It is the powerhouse organelle of a cell; the site of energy production.

17
Q

What is Ribosomes?

A

They are cell organelle where protein production takes place.

18
Q

What is Chloroplasts?

A

Chloroplasts are organelles found in plant cells that transforms solar energy into chemical energy.

19
Q

What are Vesicles?

A

Vesicles are organelles that are used by plant and animal cell to store water, nutrients and waste products.

20
Q

What are Fungal cells?

A

Fungal cells are not the same as plants cells.

21
Q

What are Plant cells?

A

They use their chloroplasts to photosynthesis and need cell walls to provide structure.

22
Q

What are Animal cells?

A

Animal cells are singled-celled or unicellular organisms, such as bacteria, are made of one cell only.

23
Q

What are Protists?

A

Protists are a diverse group of organisms that are mostly unicellular.

24
Q

What is a Microscopy?

A

it is the use of investigation with a microscope.

25
Q

What are the two main types of microscopes?

A

Light and electron microscopes.

26
Q

What is light microscopes?

A

It uses light rays

27
Q

What is electron microscopes?

A

It uses small particles called electrons.

28
Q

What is the function for the eyepiece?

A

This is the lens closest to your eye. It usually has a magnification of 10x.

29
Q

What is the function for the objective lens?

A

There are three lenses of different strength which can be used to magnify the image more clearly. 4x, 10x, 40x

30
Q

What is the function for the stage?

A

This is the place where you put a microscope slide and the clips hold the slide in place.

31
Q

What is the function for the Diaphragm?

A

controls the amount of light that goes onto the microscope slide.

32
Q

What is the function for the Light?

A

The light source projects light onto the microscope slide.

33
Q

What is the function for the Base?

A

This is very heavy to keep the microscope from falling over.

34
Q

What is the function for the Body tube?

A

This holds the eyepiece lens above the stage.

35
Q

What is the function for the Fine focus knob?

A

This is used to focus the image so it is very sharp and clear.

36
Q

What is the function for the Course focus Knob?

A

This is used to focus the image so that you can see it clearly.

37
Q

What is Mitosis?

A

It is the division of the nucleus into 2 nuclei, each with the same number of chromosomes.

Yr 8 SCIENCE (1 decks)

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