Lipids And Membranes Flashcards

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1
Q

What is the key function of carbohydrates?

A

Source of enregy

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2
Q

Name a monomer for the carbohydrates

A

Monosaccharides

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3
Q

Give a exemple of a monosaccharide

A

Glucose or fructose

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4
Q

Give two exemple of polymers of carbohydrates

A

-dissacarides
-polysaccarides

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5
Q

Why is dissacarides a polymer?

A

Because it combines with an hydroxyl group and that releases water molecules to form covalent bonds

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6
Q

What is an exemple of a dissacarides?

A

Lactose

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7
Q

Why is lactose a polymer and not a monomer?

A

Because its the combination of glucose and fructose

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8
Q

What is a polysaccarides?

A

Long chain of monosaccarides linked by glycosidic bonds

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9
Q

Where carbohydrates are located in the eukaryotic cell?

A

Majorly in the plasma membrane attached to a protein or to a lipid

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10
Q

In the plant cell where is the cellular location of the carbohydrates?

A

Cell wall

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11
Q

What is the key function of lipids

A

-building blocks of many hormones
-important constituent of the cell membrane

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12
Q

What are the two most important monomers of lipids?

A

-Glycerol
-fatty acids

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13
Q

Name 4 polymers of lipids

A

-Tryglecerides
-phospholipids
-waxes
-steroids

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14
Q

Where is located the lipid in the cell?

A

Cellular membrane

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15
Q

What are the components of s trygleceride?

A

Glycerol + 3 fatty acids

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16
Q

What are the main components of phospholipids?

A

-glycerol
-2 fatty acids
-phosphate

17
Q

True or false? fatty acids can interact with water

A

False

18
Q

What is a saturated fatty acid?

A

A single bond between carbons and hydrocarbons

19
Q

Give an exemple of a unsaturated fatty acid

A

Oils

20
Q

What is the main difference between a saturated and an unsaturated fatty acid?

A

Saturated = single bond
Unsaturated = double bond

21
Q

Unsaturated acid can be cis or trans. What does it indicates?

A

The configuration of the molecule around the double bond

22
Q

What is an exemple of a steroids

A

-cholesterol
-testosterone
-progesterone

23
Q

Where are the steroids found?

A

In the plasma membrane of the cell, within the phospholipids bilayer

24
Q

What are exemple of omega fatty acids?

A

Salmon, tuna

25
Q

Why omega fatty acid are good for our diet?

A

Because the lower triglycerides in the blood

26
Q

What are the four main characteristics of triglycerides, phospholipids and steroids

A

1) all lipids
2) all hydrophobic
3) all pass easily threw the membrane
4) all associate with the membrane