Additional Biology Extras

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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 a cell wall made of?
Cellulose.
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What does the nucleus contain?
Genetic material that controls the cell.
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What do chloroplasts contain and what is it's function?
Chlorophyll and it's function is photosynthesis.
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Does diffusion take place in all types of substance?
No.
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Is diffusion usually quicker in gases or liquids?
Gases.
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What cells transport oxygen around the body?
Red blood cells.
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What cells open and close stomata on leaves?
Guard cells.
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What shape are red blood cells and why do they have no nucleus?
Concave discs and to give more room for haemoglobin/oxygen.
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What is the job of the glandular tissue in the stomach?
Produces digestive chemicals to digest food.
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Name two glands in the digestive system.
Pancreas and salivary glands.
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What is the purpose of organs systems in large multicellular organisms?
To exchange and transport materials.
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Define the term differentiation.
the process by which cells become specialized for specific jobs.
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What are tissues, organs and organ systems?
Tissues '- A group of similar cells that work together to carry out a specific function. Organs - A group of tissues that work together to carry out a particular function. Organ systems - A group of organs that work together to..
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Name three organs found in a plant.
Stems, roots and leaves.
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What are the purposes of: Mesophyll tissue, Epidermal tissue, Xylem and Phloem
Mesophyll - Where most of photosynthesis occurs. Epidermal - covers the plant. Xylem and Phloem - Transport things like water and minerals.
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List three reasons why a green house is an ideal environment for growing plants.
1) You can control the temperature. 2) You can apply artificial light. 3) Can increase the level of Co2.
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What is a quadrat?
A square frame enclosing a known area.
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Name three parts that are found in plant cells but not in animal cells.
Cell wall, chloroplasts and vacuole.
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Name one place in a plant where glucose is stored.
The stem.
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What does DNA stand for?
DeoxyriboNucleic Acid
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DNA molecules have a special twisted structure. Give the name of this structure.
Double Helix.
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What is a fossil?
The remains of plants and animals from many years ago.
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Where are fossils usually found?
In rocks.
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What is amber and how does it preserve things?
A clear yellow stone made from fossilized resin. There's no oxygen or moisture so decay microbes can't survive.
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What is a chromosome?
Very long molecules of DNA.
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Other cards in this set

Card 2

Front

What is a cell wall made of?

Back

Cellulose.

Card 3

Front

What does the nucleus contain?

Back

Preview of the front of card 3

Card 4

Front

What do chloroplasts contain and what is it's function?

Back

Preview of the front of card 4

Card 5

Front

Does diffusion take place in all types of substance?

Back

Preview of the front of card 5
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