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Science > Cells, tissues, organs and organ systems > Flashcards

Cells, tissues, organs and organ systems Flashcards

1
Q

How many life processes does all organisms carry out?

A

Seven

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2
Q

What are the seven life processes?

A

Movement, reproduction, sensitivity, growth, respiration, excretion and nutrition

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3
Q

What is the function of the cell surface membrane?

A

It keeps cell together and controls what goes into and out of the cell?

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4
Q

What is the function of the nucleus?

A

It controls the cell

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5
Q

What is the function of the cytoplasm?

A

Where activities happen, including respiration (which occurs in the mitochondria)

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6
Q

What is the function of the chloroplast?

A

It contains chlorophyll to trap sunlight for photosynthesis

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7
Q

What is the function of the cell wall?

A

It is made of cellulose and provides support

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8
Q

What is the function of the vacuole?

A

Storage space

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9
Q

What is a microscope used for?

A

To magnify tiny things such as cells

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10
Q

How do you find out the total magnification?

A

Magnification of objective lens x magnification of eyepiece lens

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11
Q

The object you look at. What is this called?

A

A specimen. (It has to be thin to let light get through it)

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12
Q

What is the first step to use a microscope?

A

Place the smallest objective lens over the hole in the stage

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13
Q

What is the second step to use a microscope?

A

Turn the focusing wheel to move the objective lens close to the stage

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14
Q

What is the third step to use a microscope?

A

Place the slide on the stage

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15
Q

What is the fourth step to use a microscope?

A

Adjust the light source or mirror

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16
Q

What is the fifth step to use a microscope?

A

Look in to the eyepiece lens

17
Q

What is the last and final step to use a microscope?

A

Turn the focusing wheel until what you see is in focus

18
Q

What are the two specialised cells in animals?

A

Muscle cells and fat cells

19
Q

What are the two specialised cells in plants?

A

Root hair cells and xylem cells

20
Q

What is a function of muscle cells?

A

Muscle cells shape to move things

21
Q

What is a function of fat cells?

A

Fat cells in animal store fat

22
Q

What is a function of root hair cells?

A

Root hair cells take in water

23
Q

What is a function of xylem cells?

A

Xylem cells carry water

24
Q

A group of cells that are the same, all doing the same job, is called a________ (eg. muscle ______)

A

Tissue

25
Q

A group of different tissues working together to do an important job is an ______

A

Organ

Science (4 decks)

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