The characteristics of life Flashcards

(42 cards)

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
give an example of a saprophyte
bacteria and fungi of decay
26
what is excretion?
the removal of waste products of metabolism from the body
27
how do animals excrete waste?
animals excrete waste using their excretory organs
28
what are animals excretory organs?
skin lungs and kidneys
29
how to plants excrete waste?
plants excrete a little gaseous waste through tiny holes called stomata.
30
why do plants have little waste?
as they make their own food by photosynthesis
31
what is response?
the way organisms react to change, called stimuli, in their environment
32
what are stimuli?
changes in the environment
33
how do animals respond to stimuli?
animals use their sensory organs to respond quickly to stimuli in their environment
34
what stimuli do animals respond to ?
light, sound, smell, taste and touch
35
what are animals sense organs?
tongue, skin, eyes, ears, nose
36
how do plants respond to stimuli?
plants grow and move slowly in response to the stimuli in their environment.
37
what stimuli do plants respond to ?
light, gravity, touch , water and chemicals
38
what is reproduction?
the ability of organisms to produce new individuals of the same species
39
what is asexual reproduction?
one parent dividing to produce two or more identical offspring
40
give an example of an organism that uses asexual reproduction
strawberries, potatoes
41
what is sexual reproduction?
involves the joining of two sex cells formed from two parents. the offspring have characteristics of both parents.
42
give an example of an organism that uses sexual reproduction
humans