biological molecules Flashcards

1
Q

What is an organic substance?

A

An organic substance is a molecule that contains carbon and at least one other element.

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2
Q

What are isomers?

A

Isomers are molecules which have the same molecular formula but a different arrangement of atoms.

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3
Q

explain the structure of Beta glucose

A

has one OH group on the same side as the oxygen, and one OH group on the opposite side to the oxygen.

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4
Q

Fructose structure

A

is the only monosaccharide that we need to know that has four carbons and one oxygen atom in its main ring structure.

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5
Q

Galactose structure

A

has both OH groups on the same side as the oxygen.

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6
Q

Alpha glucose strucure

A

has both OH groups on the opposite side to the oxygen.

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7
Q

what is a monosaccharide

A

a monomer witch a carbohydrate is made of

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8
Q

what is maltose made of

A

glucose + glucose

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9
Q

what is sucrose made of

A

glucose + fructose

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10
Q

Lactose is made of ?

A

Glucose + galactose

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11
Q

What is formed by glucose + glucose

A

Maltose

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12
Q

When two monosaccharides bond through a condensation reaction, we call the resulting molecule a…

A

disaccharide

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13
Q

what is the type of bond between monosaccharides

A

glycosidic bonds

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14
Q

how to name a bond between charbohydrates

A

(alpha/ beta) carbon on left + carbon on right

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15
Q

type of chain formed by beta 1,4 bonds

A

straight chain

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16
Q

type of chain formed by alpha 1,4 bonds

A

coiled chain

17
Q

The rigidity of a plant cell wall is made up of …

A

long, straight, parallel chains, with hydrogen bonds between them.
So microfibrils are the smaller threads, made up of many polysaccharide chains.

18
Q

steps for a Benedict’s test?

A

Grind sample with water,
Add the same volume of Benedict’s reagent,
Heat.

19
Q

are all monosaccharides detected by benidicts reagant

A

yes