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Diffusion and Osmosis
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A human clone would...
 
Only have one parent
 
Have two parents
 
Be legal
 
Be cheap to produce
Adult bone marrow stem cells...
 
Can only differentiate into blood cells
 
Can differentiate into any type of cell
 
Can only differentiate into reproductive cells
An advantage of embryonic stem cells is...
 
They can differentiate into any type of cell
 
They are expensive
 
There are ethical issues
Plant stem cells are found...
 
In root tips and shoot tips
 
In flowers
 
In leaves
 
In root tips only
Stem cells are...
 
Undifferentiated cells
 
Differentiated cells
Name an advantage of using an electron microscope over a light microscope...
 
Higher magnification
 
Lower resolution
 
Black and white pictures
 
Lower magnification
Why do root hair cells not have chloroplasts?
 
They cannot receive sunlight so cannot photosynthesise
 
They need more space for the uptake of water
Red blood cells are specialised cells. Why do they have a large surface area?
 
To increase the rate of oxygen diffusion
 
To make it red
 
To prevent carbon dioxide entering
 
To destroy pathogens
Sperm cells are specialised cells. They have several adaptations...
 
Flagella, acrosome, streamlined, lots of mitochondria
 
Flagella, endosome, streamlined, lots of mitochondria
 
Flagella, acrosome, streamlined, a few mitochondria
 
Flagella, endosome, streamlined, a few mitochondria
The function of the cytoplasm is...
 
Where chemical reactions happen
 
To control what goes in and out of the cell
 
To control the activities of the cell
 
Protein synthesis
The function of the nucleus is...
 
To control the activities of the cell
 
To control what goes in and out of the cell
 
Where chemical reactions happen
 
Protein synthesis
Which would you not find in a plant cell?
 
Chromosomal DNA
 
Vacuole
 
Chloroplasts
 
Mitochondria
Which would you not find in an animal cell?
 
Vacuole
 
Mitochondria
 
Cell membrane
 
Nucleus
Which would you not find in a bacterial cell?
 
Nucleus
 
Cytoplasm
 
Flagella
 
Chromosomal DNA
An example of where osmosis occurs would be...
 
Animal cells
 
Mitochondria
 
Bones
Osmosis requires...
 
No energy to occur
 
Lots of energy to occur
Diffusion requires...
 
No energy to occur
 
Lots of energy to occur
Diffusion occurs in...
 
Liquids and gases
 
Solids, liquids and gases
 
Gases
 
Liquids
Diffusion occurs more quickly when...
 
There is a shorter travel distance
 
There is a longer travel distance
Particles move faster when...
 
Heat is added
 
Water is added
 
Nutrients are added
Osmosis is the movement of water through...
 
A semi permeable membrane
 
The urinary system
 
A non permeable membrane
Osmosis is the net movement of water from...
 
High water concentration to low water concentration
 
Low water concentration to high water concentration
Diffusion is the movement of...
 
a substance from high concentration to low concentration
 
a substance from low concentration to high concentration
 
water from high concentration to low concentration
 
water from low concentration to high concentration
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