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Science year 7 > Cells > Flashcards

Cells Flashcards

1
Q

Name the 7 life processes

A

Movement-Reproduce-Stimuli-
Growth-respire-Excrete-Nutrients

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2
Q

Explain movement

A

This is the process off organisms changing their position in their environment

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3
Q

Explain reproduce

A

This is the process of organisms passing on their genes to their offspring

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4
Q

Explain stimuli

A

This is the process of organisms protecting or responding to changes in their environment

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5
Q

Explain growth

A

This has been organisms get bigger or become more complex as they get older

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6
Q

Explain respire

A

This is the process that enables organisms to transform food into energy that their cells can use

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7
Q

Explain excrete

A

This is the process of organisms removing any waste products from inside them

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8
Q

Explain nutrients

A

This is a process of obtaining food animals consume(eat) other living things to get food plants make their own by photosynthesis

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9
Q

What is the piece on a microscope that you look through

A

The eyepiece

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10
Q

What are the three pieces on the end of the eyepiece

A

The objective lenses

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11
Q

What is the nucleus

A

It is the brain of the cell and also includes the DNA of the cell

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12
Q

What is the cell membrane

A

Cell membrane controls what goes in and out of the cell

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13
Q

What is a cell wall

A

Is only found on plant cells and helps keep the structure of the cell

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14
Q

What is a cytoplasm

A

The cytoplasm is a jelly-like substance where chemical reactions occur

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15
Q

What is a vacuole

A

It is only found in plant cells and store sells sap

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16
Q

What is a chloroplast

A

It is where photosynthesis happens and there’s only found in plant cells

17
Q

Diffusion

A

This is the movement of particles from a high concentration to a low concentration

18
Q

Resistance =

A

Resistance =voltage ÷current

19
Q

Speed=

A

Speed =distance÷time

20
Q

Force=

A

Force=spring constant×extension

21
Q

Explain spring constant

A

How springy it is

22
Q

Dependent variable

A

What you measure

23
Q

Control variable

A

What you keep the same

24
Q

Independent variable

A

What you change

25
Q

Spring constant =

A

Force ÷extension

26
Q

Density =

A

Mass÷volume

27
Q

Pressure =

A

Force÷area

28
Q

What keeps a balloon inflated

A

The particles move with kinetic energy and hit the sides

29
Q

Convection

A

The transfer of heat energy by liquid or fluid motion from a hot object to a cool one

30
Q

Conduction

A

The transfer of heat energy by direct contact and the passion vibration from a hot object to a cool one

31
Q

Radiation

A

The transfer of heat energy by waves from a got object to a cool one

Science year 7 (1 decks)

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