B2.1 Flashcards

1
Q

What are all living things made of

A

Cells

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2
Q

How do dissolved substances get in or out of cells

A

They have to cross the cell membrane

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3
Q

What are the different parts of a human and animal cell

A
Nucleus 
Cytoplasm 
Cell membrane 
Mitochondria
Ribosome
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4
Q

What are the different parts of a cell in a plant

A
Nucleus
Cytoplasm
Cell membrane
Mitochondria
Ribosome
Cell wall 
Chloroplast 
Permanent vacuole
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5
Q

What are the different parts in a cell of a bacterial cell

A

Cytoplasm
Membrane
Cell wall
No distinct nucleus

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6
Q

What are the different parts of a cell in a yeast cell

A

Nucleus
Cytoplasm
Membrane
Cell wall

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7
Q

What is the difference between animal and plant cell

A

Plants have a cell wall, chloroplast and permanent vacuole

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8
Q

Nucleus

A

Controls the activities of the cell

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9
Q

Cytoplasm

A

Most of the chemical reactions take place here

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10
Q

Cell membrane

A

Controls the passage of substances into and out of cell

Holds cell together

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11
Q

Mitochondria

A

Where most energy is released in respiration

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12
Q

Ribosome

A

Where protein synthesis occurs

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13
Q

Cell wall

A

Made of cellulose which strengthens cell wall

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14
Q

Chloroplasts

A

Absorbs light energy to make food

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15
Q

What is the permanent vacuole filled with

A

Cell sap

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16
Q

Why do cells specialise

A

To carry out a particular function

17
Q

How can dissolved substances move in and out of cell

A

By diffusion

18
Q

What is diffusion

A

The spreading of particles from a high concentration to a lower concentration

19
Q

The greater the difference in concentration

A

The faster the rate of diffusion

20
Q

What gases passes through the cell membrane by diffusion

A

Oxygen required for respiration and carbon dioxide

21
Q

What is differentiation

A

The process by which cells become specialised for a particular job

22
Q

When does differentiation occur

A

During the development of a multicellular organism