465973
Descrição
Quiz por mollymalone98, atualizado more than 1 year ago
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Criado por mollymalone98
quase 11 anos atrás
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Questão 1
Questão
CYTOPLASM contains ENZYMES that control the CHEMICAL REACTIONS.
Responda
- True
- False
Questão 2
Questão
What is the function of the cell wall?
Responda
-
support and strengthen the plant cell
-
to produce proteins
-
where photosynthesis takes place
Questão 3
Questão
What is the green substance in chloroplasts?
Responda
-
chlorophyll
-
cellulose
-
enzymes
-
mitochondria
Questão 4
Questão
What does the permanent vacuole contain?
Responda
-
cell sap (weak solution of sugars and salts)
-
chlorophyll
-
cellulose
Questão 5
Responda
- True
- False
Questão 6
Questão
Features of a bacteria cell
Responda
-
nucleus
-
mitochondria
-
cytoplasm
-
cell membrane
-
plasmid DNA
-
cell wall
-
vacuole
-
chloroplasts
-
flagella
-
chromosomal DNA (carries most of the genetic information)
Questão 7
Questão
Yeast cells do not contain ribosomes or mitochondria
Responda
- True
- False
Questão 8
Questão
Both yeast and bacteria are single celled organisms
Responda
- True
- False
Questão 9
Questão
Diffusion is the spreading of particles from a LOW concentration to a HIGH concentration
Responda
- True
- False
Questão 10
Questão
Diffusion only happens in liquids
Responda
- True
- False
Questão 11
Questão
Diffusion only happens in liquids
Responda
- True
- False
Questão 12
Questão
The BIGGER the DIFFERENCE IN CONCENTRATION the FASTER the diffusion rate
Responda
- True
- False
Questão 13
Questão
Dissolved substances can move in and out of cells by DIFFUSION. This is called OSMOSIS
Responda
- True
- False
Questão 14
Questão
Osmosis is the movement of water from a less concentrated solution to a more concentrated solution through a partially permeable membrane.
Responda
- True
- False
Questão 15
Questão
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
Responda
- True
- False
Questão 16
Questão
Adaptions of the PALISADE CELL or PHOTOSYNTHESIS
Responda
-
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
Questão 17
Questão
Adaptions of the GUARD CELLS to OPEN and CLOSE PORES (STOMATA)
Responda
-
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
Questão 18
Questão
Guard cells are grouped together at the top of the leaf where most of the photosynthesis happens
Responda
- True
- False
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