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GCSE Biology*** > Nature And Variety Of Life > Flashcards

Nature And Variety Of Life Flashcards

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1
Q

How do we remember the characteristics of a living organism ?

A

• MRS H GREN

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2
Q

What is Movement ?

A

This is the ability to change location position

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3
Q

What is Reproduction ?

A

This is how many individuals are made (offspring)

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4
Q

What is sensitivity ?

A

this is the ability to detect and respond to changes in the environment (stimuli)

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5
Q

What is homoeostasis ?

A

This is the ability to control internal conditions

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6
Q

What is growth ?

A

This is the increase in mass or volume of an organism

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7
Q

What is respiration ?

A

This is how organisms release energy from their food

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8
Q

What is excretion ?

A

This is how organisms with themselves of waste produced by Chemical reactions in cells

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9
Q

What is nutrition ?

A

This is when organisms require the materials they need to carry out all of the living processes

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10
Q

What are organisms called when they can exist as one cell ?

A

Unicellular

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11
Q

What is an organism ?

A

And entire living thing that can carry out life processes

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12
Q

What are organ system is made up of ?

A

Several different organs working together to carry out a function

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13
Q

What are organs made up of ?

A

Several different tissues working together to carry out a function

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14
Q

What are tissues made up of ?

A

They are a group of similar cells with the same function

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15
Q

What are cells made up of ?

A

A number of organelles, which are structures that carry out a specific Process the cell needs to survive

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16
Q

Order of size in an organism

A
  • organism
  • organ system
  • organ
  • tissue
  • cell
  • organelle
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17
Q

What is the function of the nucleus ?

A
  • Contains chromosomes which carry The genetic material.

* Controls the activities of the cell (by controlling which proteins are made).

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18
Q

What is the function of cytoplasm ?

A

Where the chemical reactions take place

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19
Q

What is the function of the cell surface membrane ?

A

Controls what enters and leaves the cell-it is selectively permeable

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20
Q

What is the function of the chloroplast ?

A
  • absorbs light energy which is used to make glucose in the process of photosynthesis
  • this glucose is food for the plant
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21
Q

What is the function of the vacuole ?

A

Membrane filled with watery liquid called cell sap, which stores dissolved sugars, mineral ions and other solutes .

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22
Q

What is the function of the cell wall ?

A
  • Good structure and rigidity to the plant cell, helping it keep its shape.
  • made of cellulose
23
Q

What is a specialised cell ?

A

When a cell adapts to perform a specific function

24
Q

Are plants multicellular or unicellular ?

A

Multicellular

25
Q

Are plants autotrophic or heterotrophic ?

A

Autotrophic because they carry out photosynthesis to make their own nutrients

26
Q

What are the cell walls made of in a plant ?

A

Cellulose

27
Q

How do plants store carbohydrates ?

A

As starch or sucrose

28
Q

Are animals multicellular or unicellular organism ?

A

Multicellular

29
Q

Are animals autotrophic or heterotrophic ?

A

Heterotropic because they consume other organisms to obtain nutrients

30
Q

Do you animals have cell walls ?

A

No

31
Q

How do animals store carbohydrates ?

A

As glycogen

32
Q

Are protoctist multicellular or unicellular ?

A

Unicellular

33
Q

What organelles do protoctist have ?

A

They have cell membranes, cytoplasm and a nucleus

34
Q

Are protoctist autotrophic or heterotrophic ?

A

So are heterotrophic but some are autotrophic

35
Q

Give a example of a protoctist

A

Plasmodium causes malaria

36
Q

Are Fungi multicellular or unicellular ?

A

They can be both

37
Q

Are fungi able to photosynthesise ?

A

No, as they do not contain chloroplasts

38
Q

Are fungi autotrophic or heterotrophic ?

A

Heterotrophic = saprotrophic nutrition, they feed by extracellular secretion of digestive enzymes onto food material and absorption of the organic product

39
Q

Do fungi have cell walls ?

A

Yes, made of chitin

40
Q

How do you fungi store carbohydrates ?

A

They may store carbohydrates as glycogen

41
Q

What are fungi made up of ?

A

hyphae, which make up mycelium

42
Q

Can fungi be pathogenic ?

A

Yes

43
Q

Is a virus a cell ?

A

No

44
Q

What are virus made up of ?

A

Genetic material is surrounded by a protein coat

45
Q

How do viruses reproduce ?

A

They can only reproduce inside a living cell

46
Q

What are some viruses surrounded by ?

A

A membrane called an envelope

47
Q

Examples of viruses

A

HIV and AIDS

48
Q

Are bacteria multicellular or unicellular ?

A

Unicellular

49
Q

What is bacteria made up of ?

A

A cell wall, cell membrane and cytoplasm

50
Q

What is bacterias cell wall made up of ?

A

Polysaccharides and proteins

51
Q

Do you bacteria contain a nucleus ?

A

No, but contains DNA

52
Q

Are bacteria autotrophic or heterotrophic ?

A

Sharma autotrophic, but most to heterotrophic

53
Q

What are pathogens ?

A

An organism which causes harm

GCSE Biology*** (22 decks)

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