Biology

What do mitochondria do?
They are small sausage-shaped structures that can only be seen clearly under an electron microscope. They are found in the cytoplasm of cells and release energy from respiration for the cells to use. [In-Sugar and Glucose. Out-Energy]
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What does a leaf palisade cell do?
It contains lots of chloroplasts for photosynthesis.
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What are xylem cells?
Xylem cells are small tubes that carry water up the stem (plant)
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What are root hair cells?
They are long and thin to absorb water from the soil.
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What do red blood cells contain?
They contain a substance that carries oxygen.
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What are nerve cells?
They are like wired to carry messages around the body.
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Why do sperm cells have a tail?
They have a tail to swim to the egg
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What are tissues?
They are groups of identical cells that all do the same job. E.g. heart muscle cells form heart muscle tissue that beats throughout your life.
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What are organs? What are they made up of? Give an example.
Organs are made up of groups of tissues. E.g. your heart is made up of muscle tissue, blood tissue and nerve tissue. These tissues all do different jobs, but work together to pump blood around the body. They work together to do a particular job.
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What is a system? Give an example
A number of organs working together makes up a system. Your heart and blood vessels make up your circulatory system. This transports blood to all the cells of your body.
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What is diffusion?
The movement of particles from a region of high concentration to a region of lower concentration until they are evenly spread out.
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What is osmosis?
The diffusion of water molecules from a dilute solution to a more concetration solution through a partially permeable membrane.
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What is photosynthesis?What do plants need to do this?
The process by which pleants make their own food. To do this they need a source of nergy to build food molecules. Sunlight is absorbed by the green substance called CHLORPHYLL.
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Other cards in this set

Card 2

Front

What does a leaf palisade cell do?

Back

It contains lots of chloroplasts for photosynthesis.

Card 3

Front

What are xylem cells?

Back

Preview of the front of card 3

Card 4

Front

What are root hair cells?

Back

Preview of the front of card 4

Card 5

Front

What do red blood cells contain?

Back

Preview of the front of card 5
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