Cells & Tissues Flashcards

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1
Q

What are cells?

A

Cells are the building blocks of nature

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2
Q

Complete the sentence:

All plant and animal life is made up of…

A

Cells

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3
Q

Name 4 plant organs

A

Roots
Leaves
Flowers
Stems

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4
Q

Where is the cell wall and what is its purpose?

A

The cell wall contains the cell and can be found surrounding it

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5
Q

What is the cell wall made from?

A

Cellulose

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6
Q

Why is the cell wall permeable?

A

To allow gaseous exchange

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7
Q

What is the substance called that is added to woody plants as they grow, to make them thicker and more rigid?

A

Lignin

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8
Q

What is lignin?

A

A substance added to woody plants as they grow, to make them thicker and more rigid?

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9
Q

What is protoplasm?

A

The living contents of the cell.

This includes the cell embrace, cytoplasm, nucleus, vacuous, orangeries, (chloroplasts & mitochondria) & plasmodesmata

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10
Q

What is cell membrane?

What is its purpose?

A

A thin sheet within the cell.

It encloses the cyroplasm and controls the movement of substances in and out the cell

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11
Q

Name the Jelly like substance within a cell

A

Cytoplasm

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12
Q

What is cytoplasm?

A

A jellylike substance within the cell membrane

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13
Q

What is the nucleus?

A

The xonteol centre of the cell

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14
Q

What does the nucleus initiate?

A

Cell division

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15
Q

Where is cell division initiated?

A

In the nucleus

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16
Q

What is the vacuole?

A

A sac surrounded by its own membrane

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17
Q

What does a vacuole contain?

A

It’s own membrane, water, minerals, and waste products of the plant

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18
Q

How does the vacuole contribute to structural stability of the cell?

A

By the pressure of the liquid against the membrane

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19
Q

What is an orangelle?

Name two

A

Small bodies suspended in cytoplasm

Chloroplasts & mitochondria

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20
Q

What do chloroplasts contain?

A

They contain chlorophyll, giving plants their green colour

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21
Q

Where is mitochondria found?

A

In all parts of the plant

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22
Q

What are plasmodesmata?

What do they provide?

A

Strands of cyroplasm that pass through the cell walls and provide a connection of adjacent cells

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23
Q

What is the purpose of plasmodesmata?

A

To allow substances to pass between cells

24
Q

Complete the sentence: plants grow by…

A

Cell division

25
Q

What is the cell division process called?

A

Mitosis

26
Q

What is mitosis?

A

When one cell divides into 2

27
Q

Where does cell division start?

A

At the nucleus

28
Q

Between 2 cells, there’s a thin wall called…

A

Middle lamella

29
Q

What is middle lamella?

A

A thin wall between cells which tends to bind cells together

30
Q

Why are there some cavities and channels between cells?

A

To allow movement of liquids and gases through them

31
Q

What is an active area of cell division called?

A

Meristem

32
Q

What is a meristem?

A

An area of active cell division

33
Q

What 2 areas do meristems occur?

A

Apical meristem

Lateral meristem

34
Q

Where do apical meristems occur?

A

Rips of roots and stems

35
Q

What type of meristem is found st tips of roots and stems?

A

Apical meristem

36
Q

What do apical meristems cause?

A

Lengthening of roots and stems

37
Q

What Is the vascular cambium?

A

A thin band of cells that causes plant organs to thicken

38
Q

Where are lateral meristems found?

A

Like a tube through roots and stems

39
Q

Where does primary growth take place?

A

Apical meristems

40
Q

What type of growth takes place in apical meristems?

A

Primary growth

41
Q

Where does secondary growth take place?

A

Lateral meristems

42
Q

What growth takes place in lateral meristems?

A

Secondary growth

43
Q

What does primary growth do to a plant?

A

Makes it longer

44
Q

What does secondary growth do to a plant?

A

Makes it wider, providing structural stability

45
Q

Where does growth take place?

A

Meristems

46
Q

What protects the plant?

A

Epidermis

47
Q

What tissues transport within the plant?

A

Xylem and phloem

48
Q

What cells does the vascular cambium produce?

A

Xylem and phloem

49
Q

Xylem and phloem cells are produced by?…

A

The vascular cambium

50
Q

How many cells thick is the epidermis?

A

1

51
Q

The cuticle prevents..

A

Water loss

52
Q

What are the pores of the cuticle called?

A

Stomata

53
Q

What is the purpose of the stomata?

A

To allow movement of water and gases into and out of the plant

54
Q

What constitutes the vascular cambium? (2)

A

Xylem and phloem

55
Q

Xylem and phloem constitute the…

A

Vascular cambium

56
Q

Parenchyma is a sort of what type of cell?

A

Packing or ground tissue

57
Q

What is parenchyma for? (3)

A

Storage of plant nutrients
Photosynthesis
Respiration