Biology

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Organ
A group of tissues that perform a specific function
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Organ system
A group of organs working together to carry out a particular task
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Allele
A different type of a gene
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Metabolic rate
Rate of metabolism i.e. the amout of energy used over a certain period
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Metabolism
The chemical processes that occur within a living organism
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Hormone
A naturally occuring substance secreted by specialised cells
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Photosynthesis
carbon dioxide + water --> glucose + oxygen
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Respiration
glucose + oxygen --> carbon dioxide + water
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Epidermal tissues
Layers of cells covering the entire leaf preventing pathogens getting into the plant
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Mesophyll
Carries out photosynthesis
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Xylem
Transport water and minerals
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Phloem
Carries awat sugars made by the mesophyll. Transports substances to and from the leaf
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Diffusion
the net movement of particles from a high concentration area to a low concentration area
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Osmosis
The net movement of water particles from a high concentration area to a low concentration area
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Active transport
Particles move against the concentration gradient from a low concentration area to a high concentration area e.g. glucose
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Root hair cell
Has a large surface area to absorb water and minerals easily
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Palisade
Has many chloroplasts for photosynthesis
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White blood cell
Can change shape to engilf microbes
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Sperm cell
Has a tail to swim
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Nerve cell
Long nerve fibres to carry messages to other cells
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Glucose
Stored in the liver and the muscles
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Glycogen
Glucose is converted into glycogen which is stored
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Glucagon
Produces in the pancreas when blood glucose levels fall. Causes glycogen to be converted into glucose
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Insulin
Relased from the pancreas when blood glucose levels are too high. It converts glucose into glycogen
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Other cards in this set

Card 2

Front

A group of organs working together to carry out a particular task

Back

Organ system

Card 3

Front

A different type of a gene

Back

Preview of the back of card 3

Card 4

Front

Rate of metabolism i.e. the amout of energy used over a certain period

Back

Preview of the back of card 4

Card 5

Front

The chemical processes that occur within a living organism

Back

Preview of the back of card 5
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