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BIOLOGY > The characteristics of life > Flashcards

The characteristics of life Flashcards

1
Q

What is metabolism?

A

all the chemicals reactions that occur in the cell of an organism.

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2
Q

give 5 examples of metabolism

A

growth, movement, response, respiration and reproduction

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3
Q

what is life?

A

life is the procession of all the 5 characteristics of life to carry out all the reactions needed to survive and reproduce

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4
Q

what do organisms need to be considered alive?

A

they need all 5 characteristic of life

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5
Q

what are the 5 characteristics of life?

A
  • organisation
  • nutrition
  • excretion
  • response
  • reproduction
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6
Q

what is the continuity of life?

A

all living things come from other living things of the same type

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7
Q

what is organisation?

A

living things are composed of cells, tissue,organsand organs systems

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8
Q

what is a unicellular organism?

A

a organism made up of one cell

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9
Q

give an example of an unicellular organism

A

bacteria

amoeba

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10
Q

what is a multicellular organism ?

A

an organism made up of many cells

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11
Q

give an example of a unicellular organism

A

humans

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12
Q

how is tissue formed?

A

groups of similar cells form tissue

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13
Q

how are organs formed?

A

many tissue forms organs

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14
Q

how are organ systems formed?

A

many organs from organ systems

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15
Q

how are organisms formed?

A

organ systems form organisms

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16
Q

what is nutrition?

A

the way organisms obtain and use food

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17
Q

what are the two types of nutrition?

A

autotrophic and heterotrophic nutrition

18
Q

what is autotrophic nutrition ?

A

the way green plants make their own food by photosynthesis using sunlight energy

19
Q

what is heterotrophic nutrition?

A

organisms that take in food from other organisms

20
Q

give the two types of heterotrophic nutrition

A

parasites and saprophytes

21
Q

what are parasites

A

organisms that live on a live host and take in food from the host causing it harm

22
Q

what are saprophytes?

A

organisms that live on a dead organism /matter , taking food from it.

23
Q

give an example of a heterotroph

A

humans

rabbits

24
Q

give an example of a parasite

A

fleas, lice , tics , worms

25
Q

give an example of a saprophyte

A

bacteria and fungi of decay

26
Q

what is excretion?

A

the removal of waste products of metabolism from the body

27
Q

how do animals excrete waste?

A

animals excrete waste using their excretory organs

28
Q

what are animals excretory organs?

A

skin lungs and kidneys

29
Q

how to plants excrete waste?

A

plants excrete a little gaseous waste through tiny holes called stomata.

30
Q

why do plants have little waste?

A

as they make their own food by photosynthesis

31
Q

what is response?

A

the way organisms react to change, called stimuli, in their environment

32
Q

what are stimuli?

A

changes in the environment

33
Q

how do animals respond to stimuli?

A

animals use their sensory organs to respond quickly to stimuli in their environment

34
Q

what stimuli do animals respond to ?

A

light, sound, smell, taste and touch

35
Q

what are animals sense organs?

A

tongue, skin, eyes, ears, nose

36
Q

how do plants respond to stimuli?

A

plants grow and move slowly in response to the stimuli in their environment.

37
Q

what stimuli do plants respond to ?

A

light, gravity, touch , water and chemicals

38
Q

what is reproduction?

A

the ability of organisms to produce new individuals of the same species

39
Q

what is asexual reproduction?

A

one parent dividing to produce two or more identical offspring

40
Q

give an example of an organism that uses asexual reproduction

A

strawberries, potatoes

41
Q

what is sexual reproduction?

A

involves the joining of two sex cells formed from two parents. the offspring have characteristics of both parents.

42
Q

give an example of an organism that uses sexual reproduction

A

humans

BIOLOGY (7 decks)

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