465973
Beschreibung
Quiz von mollymalone98, aktualisiert more than 1 year ago
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Erstellt von mollymalone98
vor fast 11 Jahre
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Frage 1
Frage
CYTOPLASM contains ENZYMES that control the CHEMICAL REACTIONS.
Antworten
- True
- False
Frage 2
Frage
What is the function of the cell wall?
Antworten
-
support and strengthen the plant cell
-
to produce proteins
-
where photosynthesis takes place
Frage 3
Frage
What is the green substance in chloroplasts?
Antworten
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chlorophyll
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cellulose
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enzymes
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mitochondria
Frage 4
Frage
What does the permanent vacuole contain?
Antworten
-
cell sap (weak solution of sugars and salts)
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chlorophyll
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cellulose
Frage 5
Antworten
- True
- False
Frage 6
Frage
Features of a bacteria cell
Antworten
-
nucleus
-
mitochondria
-
cytoplasm
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cell membrane
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plasmid DNA
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cell wall
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vacuole
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chloroplasts
-
flagella
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chromosomal DNA (carries most of the genetic information)
Frage 7
Frage
Yeast cells do not contain ribosomes or mitochondria
Antworten
- True
- False
Frage 8
Frage
Both yeast and bacteria are single celled organisms
Antworten
- True
- False
Frage 9
Frage
Diffusion is the spreading of particles from a LOW concentration to a HIGH concentration
Antworten
- True
- False
Frage 10
Frage
Diffusion only happens in liquids
Antworten
- True
- False
Frage 11
Frage
Diffusion only happens in liquids
Antworten
- True
- False
Frage 12
Frage
The BIGGER the DIFFERENCE IN CONCENTRATION the FASTER the diffusion rate
Antworten
- True
- False
Frage 13
Frage
Dissolved substances can move in and out of cells by DIFFUSION. This is called OSMOSIS
Antworten
- True
- False
Frage 14
Frage
Osmosis is the movement of water from a less concentrated solution to a more concentrated solution through a partially permeable membrane.
Antworten
- True
- False
Frage 15
Frage
Particles move about randomly, so they move both ways through a semi permeable mebrane in osmosis. This means there is a NET (overall) movement FROM the HIGHER concentration
Antworten
- True
- False
Frage 16
Frage
Adaptions of the PALISADE CELL or PHOTOSYNTHESIS
Antworten
-
Packed with chloroplasts
-
More chloroplasts near the top of the cell so they're nearer the light
-
TALL meaning larger SURFACE AREA for ABSORBING CO2 from the air
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THIN meaning they can be crammed tightly next to eachother at the top of the leaf
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Special kidney-shape
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When the plant has lots of water, the cells become TURGID so the stomata OPEN and gases can be exchanged
-
When the plant is short of water, the cells become FLACCID, making the stomata close, meaning less water vapour escapes.
-
THIN outer walls and THICKER inner walls make the opening and closing work
-
SENSITIVE TO LIGHT - CLOSE AT NIGHT to save water
Frage 17
Frage
Adaptions of the GUARD CELLS to OPEN and CLOSE PORES (STOMATA)
Antworten
-
Packed with chloroplasts
-
More chloroplasts near the top of the cell so they're nearer the light
-
TALL meaning larger SURFACE AREA for ABSORBING CO2 from the air
-
THIN meaning they can be crammed tightly next to eachother at the top of the leaf
-
Special kidney-shape
-
When the plant has lots of water, the cells become TURGID so the stomata OPEN and gases can be exchanged
-
When the plant is short of water, the cells become FLACCID, making the stomata close, meaning less water vapour escapes.
-
THIN outer walls and THICKER inner walls make the opening and closing work
-
SENSITIVE TO LIGHT - CLOSE AT NIGHT to save water
Frage 18
Frage
Guard cells are grouped together at the top of the leaf where most of the photosynthesis happens
Antworten
- True
- False
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