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