Biology key words

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Cell wall
a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose.
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Hydrogen bonds
a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
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Cellulose
an insoluble substance which is the main constituent of plant cell walls and of vegetable fibres such as cotton. It is a polysaccharide consisting of chains of glucose monomers.
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a-glucose
a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates
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pectin
a soluble gelatinous polysaccharide which is present in ripe fruits and is used as a setting agent in jams and jellies.
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Other cards in this set

Card 2

Front

a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

Back

Hydrogen bonds

Card 3

Front

an insoluble substance which is the main constituent of plant cell walls and of vegetable fibres such as cotton. It is a polysaccharide consisting of chains of glucose monomers.

Back

Preview of the back of card 3

Card 4

Front

a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates

Back

Preview of the back of card 4

Card 5

Front

a soluble gelatinous polysaccharide which is present in ripe fruits and is used as a setting agent in jams and jellies.

Back

Preview of the back of card 5

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