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Sec 1 :D > Science Cells Pt.2 (Sec1) > Flashcards

Science Cells Pt.2 (Sec1) Flashcards

Cellular Organisation + Division of Labour + Adaptations

1
Q

What are the 5 main organ systems in the body?

A

Digestive, Circulatory, Respiratory, Skeletal and Muscular

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2
Q

What is the cellular organisation in man?

A

Cells->Tissue->Organ->Organ Systen->Oragnism

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3
Q
  1. Cells + Example (Human)
A

Different types of cells have specialized functions & A heart muscle cell contracts rhythmically

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4
Q
  1. Tissue + Example (Human)
A

Cells of the same kind that perform a similar job are grouped together to form the tissue & Heart muscle tissue is formed by many heart cells

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4
Q
  1. Organ (Human)
A

An organ is formed by several tissues working together to perform a specialized function

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5
Q
  1. Organ Example (Human)
A

Heart organ is formed by muscle tissue, blood vessels, nerve tissue and connective tissue, It pumps oxygen rich blood to all cells in the body

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6
Q
  1. Organ System (Human)
A

Organs with similar roles work together to function efficiently andfor a specialised purpose to form an organ system

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7
Q
  1. Organ System Example (Human)
A

The heart, arteries and veins of the cardiovascular system work together to transport blood to all parts of the body

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8
Q
  1. Organism (Human)
A

The different organ systems work together to make up the entire body of an organism

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9
Q
  1. Organism Example (Human)
A

All the systems work together to enable the body to function properly

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10
Q

What are the 2 main organ systems in a plant?

A

Root system and the shoot system

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11
Q

Parts of the root system?

A

Main roots, branched roots and root hairs

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11
Q

Parts of the shoot system

A

Leaves, stems, flower buds and flowers

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11
Q

Cellular Organisation in plants?

A

Cells-Tissue-Organ-Organ System-Organism

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12
Q
  1. Cells (plants)
A

Guard cells allow gaseous exchange to take place

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13
Q
  1. Tissues (Plants)
A

Epidermal tissue is made up of many closed packed cells, including guard cells. This tissue helps prevent water loss and allows for gaseous exchange

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13
Q
  1. Organism (plant)
A

The shoot and root systems work together to help the plant grow and function

13
Q
  1. Organ (plants)
A

The leaf in an organ is where food substances are formed. The leaf is protected from the external environment by epidermal tissue

14
Q
  1. Organ system (plants)
A

The shoot system includes the organs leaves, stems, buds and flowers (flowering plant)

15
Q

Do cells work independently at cellular level?

A

No

16
Q

What do other cells work with at cellular level?

A

Other cells & tissues

17
Q

Tissue example in animals

A

Muscle Tissue

17
Q

Tissue example in plants

A

Epidermis of leaf

17
Q

What are organs?

A

A group of diffferent tissues working together for a specific function

17
Q

Organ example in animals

A

Stomach: smooth muscle tissue, connective tissueand nervous tissue

17
Q

What are tissues?

A

Cells of the same type work together to perform a specific function

18
Q

Organ example in plants

A

Leaf: epidermis, ground tissue & transporting tissue (xylem & pholem)

19
Q

What is a system?

A

A group of different organs working together for a specific function

20
Q

System example in humans

A

Digestive system

21
Q

System example in plants

A

Plant reproductive system

22
Q

What is the division of labour?

A

Different types of cells are suited to perform different functions in the living organism

23
Q

What are the advantages of the division of labour?

A

Faster, less wastage or energy, time and materials. (More efficient)

24
Q

RBC Adaptation 1

A

Contains haemoglobin that binds to oxygen reversibly to transport oxygen to other parts of the body

25
Q

RBC Adaptation 2

A

No nucleus so more haemoglobin can be packed into the cell to transport more oxygen around the body per unit time

25
Q

RBC Adaptation 4

A

Has flexible and elastic membrane which allows RBC to squeeze through narrow blood capilaries to transport oxygen to all parts of the body

25
Q

RBC Adaptation 3

A

Circular, biconcave shape increases surface area to volume ratio so that oxygen can diffuse/move into and out of the cell at a faster rate

26
Q

RHC Function

A

Absorb water and dissolved mineral salts from the soil

27
Q

RHC Adaptation 1

A

Long and narrow outgrowth to increase surface area to volume ratio for faster rate of absorption of water & dissolved mineral salts from the soil solution

28
Q

Palisade cell Function

A

Carry out photosynthesis

29
Q

Palisade cell Adaptation

A

Have numerous chloroplast that contain chlorophyll to absorb light for photosynthesis

Sec 1 :D (22 decks)

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