power point quiz; cell variety
TRANSCRIPT
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Unit 1: Cell Unit 1: Cell VarietyVariety
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•What is a What is a unicellular unicellular
organism and organism and give two give two
examples?examples?
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• An organism which An organism which consists of one cell consists of one cell
only.only.• PleurococcusPleurococcus• BacteriaBacteria
• ParameciumParamecium• AmoebaAmoeba• EuglenaEuglena
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What organelles What organelles in an animal cell in an animal cell would be shown would be shown by an electron by an electron microscope?microscope?
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• NucleusNucleus• NucleolusNucleolus
• MitochondrionMitochondrion• Smooth ERSmooth ER• Rough ERRough ER• RibosomesRibosomes• CentriolesCentrioles• LysosomeLysosome• Golgi bodyGolgi body
• Golgi vesiclesGolgi vesicles
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•How are cheek How are cheek epithelial cells epithelial cells suited to their suited to their
function?function?
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•They have a flat They have a flat irregular shape which irregular shape which forms a loose layer forms a loose layer
which is easily which is easily replaced during wear replaced during wear
and tear, thus and tear, thus protecting the mouth protecting the mouth
lininglining
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What are the roles What are the roles of the rough of the rough endoplasmic endoplasmic
reticulum and the reticulum and the smooth endoplasmic smooth endoplasmic
reticulum?reticulum?
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•Rough = Synthesis Rough = Synthesis and transport of and transport of
proteins for exportproteins for export•Smooth = Synthesis Smooth = Synthesis
and transport of and transport of lipidslipids
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What is the What is the role of the role of the
mitochondrion?mitochondrion?
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• Produces ATP Produces ATP by aerobic by aerobic respirationrespiration
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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● ● What two types What two types of cell are present of cell are present
in the human in the human windpipe and windpipe and
Explain how these Explain how these cells are suited to cells are suited to
their functiontheir function
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• Ciliated columnar Ciliated columnar epithelial cell = Cilia beat epithelial cell = Cilia beat upwards to sweep mucus upwards to sweep mucus
away from lungsaway from lungs
• Goblet cell = Produces Goblet cell = Produces mucus to trap germs and mucus to trap germs and
dirtdirt
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What is the cell What is the cell wall composed of, wall composed of, and how does its and how does its structure suit its structure suit its
function?function?
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•Cellulose= The Cellulose= The fibrous arrangement fibrous arrangement makes the cell wall makes the cell wall
strong but also strong but also slightly elasticslightly elastic
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•State the two State the two functions of xylem functions of xylem tissue and explain tissue and explain how the two cell how the two cell
types are suited to types are suited to these functionsthese functions
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• Water Transport and SupportWater Transport and Support
• Vessel = Hollow tube to allow Vessel = Hollow tube to allow transport and strengthened transport and strengthened
with lignin for supportwith lignin for support
• Tracheid = Lignified walls for Tracheid = Lignified walls for supportsupport
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•Describe the Describe the permeability permeability of the cell of the cell
wallwall
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•Freely Freely permeablepermeable
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•Name four Name four functions of the functions of the proteins in the proteins in the
plasma plasma membranemembrane
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• SupportSupport• Transport (through channels)Transport (through channels)• Transport (as carriers to Transport (as carriers to
actively pump molecules)actively pump molecules)• EnzymesEnzymes
• Antigenic markersAntigenic markers• Receptors for hormonesReceptors for hormones
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What are the What are the roles of the roles of the
golgi body and golgi body and golgi vesicles?golgi vesicles?
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•Golgi body = Golgi body = Packages complex Packages complex
moleculesmolecules•Golgi vesicles = Golgi vesicles =
Encloses and Encloses and transports moleculestransports molecules
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What are the What are the two main two main
components of components of the plasma the plasma membrane?membrane?
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•ProteinsProteins•PhospholipidsPhospholipids
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What does What does hydrophilic mean hydrophilic mean and which element and which element of a phospholipid of a phospholipid can be described can be described
as this?as this?
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•Hydrophilic = Hydrophilic = ‘Water loving’‘Water loving’
•The phosphate head The phosphate head is hydrophilicis hydrophilic
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What are the two What are the two main cell types main cell types present in blood present in blood
and how does their and how does their structure suit structure suit
their functions?their functions?
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• Red blood cells = Biconcave Red blood cells = Biconcave shape allows a large surface shape allows a large surface area for better uptake of area for better uptake of
oxygen for transportoxygen for transport
• White blood cells = Some can White blood cells = Some can change shape and contain change shape and contain
microbe digesting enzymes to microbe digesting enzymes to kill any invading pathogenskill any invading pathogens
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•Why can Why can EuglenaEuglena not be classified not be classified as either a plant as either a plant
or animal?or animal?
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• Has plant and animal Has plant and animal characteristics.characteristics.
•No cellulose cell wall and No cellulose cell wall and ingests food by ingests food by phagocytosisphagocytosis
• Also contains chloroplasts Also contains chloroplasts and can photosynthesiseand can photosynthesise
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515
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•What does What does hydrophobic mean hydrophobic mean and which element and which element of a phospholipid of a phospholipid can be described can be described
as this?as this?
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•Hydrophobic = Hydrophobic = ‘Water hating’‘Water hating’
•The lipid tails are The lipid tails are hydrophobichydrophobic
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Unit 1: Cell Unit 1: Cell VarietyVariety
11 22 33 44 5566 77 88 99 10101111 1212 1313 1414 1515