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N5 Biology > Unit 2 - Organisms > Flashcards

Unit 2 - Organisms Flashcards

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1
Q

What is the function of the stomach?

A

Churning of food

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2
Q

What is the function of the heart?

A

Pump Blood

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3
Q

What is the function of the kidney?

A

Maintenance of water and removal of soluble waste

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4
Q

What is the function of the lung?

A

Exchange of the respiratory gases.

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5
Q

What is the function of the skin?

A

Protection

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6
Q

What is the function of the root? (Plant)

A

Absorpition

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7
Q

What is the function of the Stem?

A

Transport water and food

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8
Q

What is the function of the flower?

A

Production of seeds

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9
Q

What is the function of the leaf?

A

Photosynthesis

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10
Q

What is the order of the parts of an organism?

A 
Cells
Tissues
Organs
Systems
Organism
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11
Q

What is stage 1 of mitosis?

A

DNA is replicated to form homologous chromosomes.

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12
Q

What is stage 2 of mitosis?

A

Nuclear membranes break down.

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13
Q

What is stage 3 of mitosis?

A

Homologous chromosomes line up along the equator of the cell.

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14
Q

What is stage 4 of mitosis?

A

Spindle fibres form and pull sister chromatids to opposite poles of the cells.

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15
Q

What is stage 5 of mitosis?

A

New nuclear membranes form around the chromosomes at each pole of the cells.

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16
Q

What is stage 6 of mitosis?

A

The cell cytoplasm splits to form two new, genetically-identical cells.

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17
Q

What is the function of mitosis?

A

Mitosis provides new cells for growth and repair of damaged cells and maintains the diploid chromosomes complement.

18
Q

What are stem cells?

A

They are unspecialised cells which can divide in order to self-renew.

19
Q

What is the hierarchy of organisms?

A

Cells –> Tissues –> Organs –> System = Organism

20
Q

What does CNS stand for?

A

Central nervous system

21
Q

What do CNS consist of?

A

The brain and spinal cord

22
Q

What is the function of the Cerebrum?

A

Controls conscious thought

23
Q

What is the function of Cerebellum?

A

Controls balance and coordinated movement.

24
Q

What is the function of the Medulla?

A

Controls involuntary actions (digestion,breathing rate and heart rate)

25
Q

What are the three types of neurons?

A

Sensory
Inter
Motor

26
Q

What is the function of sensory neurons?

A

Carries electrical impulses from the receptors of sense organs to CNS.

27
Q

What is the function of the inter neuron?

A

Carries electrical impulses from the sensory neurons to the motor neuron.

28
Q

What is the function of the motor neuron?

A

Carries electrical impulses from the inter neuron to the effector.

29
Q

What hormones do blood glucose regulation involve?

A

Insulin and glucagon

30
Q

What are changes in the concentration of blood glucose detected by?

A

Cells

31
Q

What does the pancreas release when blood glucose concentration increases?

A

Insulin

32
Q

What does the pancreas release when blood glucose concentration decreases?

A

Glucagon

33
Q

Which cells are haploid?

A

Gametes

34
Q

What is the male gamete called?

A

Sperm

35
Q

What is the female gamete called?

A

Egg

36
Q

Where is the male gamete in plants located?

A

In the Pollen Grains

37
Q

Where is the female gamete found in plants?

A

Ovule

38
Q

What is the function of the sepals?

A

Protect the unopened flower bud

39
Q

What is the function of the petals?

A

May be brightly coloured to attract insects

40
Q

What is the function of the stamens?

A

The male parts of the flower consisting of the anther held up on the filament.

N5 Biology (3 decks)

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