1. cells Flashcards

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1
Q

what do all cells contain

A

plasma membrane
genetic material
cytoplasm

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2
Q

explain plasma memebrane

A

seperate content of cell to surroudings

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3
Q

explain genetic material

A

info for cell to carry out activities

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4
Q

explain cytoplasm

A

site of chemical reactions

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5
Q

unicellular

A

one cell eg. bacteria amoeba chlorella
single cell is responsible for functions of survival

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6
Q

cells

A

building blocks of life

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7
Q

what are the 7 functions of life

A

metabolism
response
homeostasis
growth
reproduction
excretion
nutrition

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8
Q

metabolism

A

chemical reactions inside cell

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9
Q

response

A

ability react towards stimulus

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10
Q

homeostasis

A

internal enviornment of cell within limits

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11
Q

growth

A

increase in size

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12
Q

reproduction

A

production of offspring

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13
Q

excretion

A

removal of waste products from cell

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14
Q

nutrition

A

getting material for growth production of energy

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15
Q

multicellular

A

more than one cell type eg. plant animals etc
cells differentiate to make tissues perform speialized functions eg red blood cells

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16
Q

differentiation

A

process which cell becomes more specialized , during this process some genes start to be used in function of cell; gene is expressed or unexpressed
differentiated cells- tissue- organs- organ system- multicellular organism

17
Q

prokaryotic cells

A

no nucleus no membrane, bound organelles DNA not inclosed inside nucleus but found in region called nucleoid eg bacteria, archea etc

18
Q

organelles

A

structures found inside cells perform specific functions

19
Q

organelles in a prokarayotic cell

A

pili, cell wall, plasma membrane, nucleoid containing naked dna, cytoplasm, 70s ribosomes, plasmid, flagella

20
Q

prokarayotic cell- plasma membrane

A

permeable membrane- control substances move in or out of cell

21
Q

prokarayotic cell- cell wall

A

made of peptidoglycan- maintains shape of cell prevent cell from bursting

22
Q

prokarayotic cell- pili

A

hair like structures- help bacteria adhere to eachother for transfer of DNA conjugation

23
Q

prokarayotic cell- cytoplasm

A

gel like enclosed in cell- has enzymes catalyse chemical reactions inside cell

24
Q

prokarayotic cell- flagella

A

whiplike structure- help bacteria move

25
Q

prokarayotic cell- ribosome

A

70s type- protein synthesis

26
Q

prokarayotic cell- nucleoid

A

region containing naked dna- DNA holds genetic info controls cell

27
Q

prokarayotic cell- plasmid

A

ring of dna- help bacteria adapt to unusual situations eg. antibiotic resistance

28
Q

eukarayotic cell

A

complex cells contain nucleus and membrane bound organelles dna enclosed un nucleus eg. plant animal fungi protists can be single or multi cellular organisms eg. amoeba is uni and eukarayotic

29
Q
A