Bioligy questions

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What does the nucleas contain?
The genetic material that controls the activites of the cell
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What does the cell membrane do?
Holds the cell together and controls what goes in and out.
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What is yeast?
It is a single celled organism
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Do bacterial cells have a nucleus?
no
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What are chloroplasts?
These are where photsynthesis occurs which makes the food for the plant. They contain a green substance called chlorophyll.
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What is a cytoplasm?
a gel like substance where most chemical reactions happen. And it contains enzymes.
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What does the mitochondria do?
This is where the reaction for resperation takes place.
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What are the ribosomes?
This is where the proteins are made in the cell.
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What do animal cell not have?
A cell wall made of celulose, permeament vacuole, chloroplasts.
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What does a yeast cell have?
A nucleus, cytoplasm, cell membrane, surrounded by a cell wall.
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What does a bacterial cell have?
Cytoplasm, cell membrane, cell wall.
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What is diffusion?
it is the spreading out of particles from an area of high concentration to an area of low concentration.
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Where does diffusion happen?
in solutions and in gases.
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What happens if there is a big difference in concentration?
It has a faster diffusion rate.
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What small acids can diffuse through cell membranes?
glucose, amino acids, and water.
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What do digestive enzymes do ?
They break down big molecules into smaller ones.
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What does amalayse do?
It converts starch into sugars.
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What does protease do?
converts proteins into amino acids.
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What does bile do?
It neutralises the stomach acids and emulsifies t fats.
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What does mitosis do?
It makes new cells for growth and repair.
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What does meiosis do?
It produces cells which have half the number of the normal number of chromosomes.
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Card 2

Front

What does the cell membrane do?

Back

Holds the cell together and controls what goes in and out.

Card 3

Front

What is yeast?

Back

Preview of the front of card 3

Card 4

Front

Do bacterial cells have a nucleus?

Back

Preview of the front of card 4

Card 5

Front

What are chloroplasts?

Back

Preview of the front of card 5
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