chem Flashcards

(42 cards)

1
Q

What is a condensation reaction?

A

Building complex molecules from smaller building blocks by removing water molecules.

It is the opposite of hydrolysis.

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2
Q

What is the molecular formula of glucose?

A

C6H12O6

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3
Q

What is glucose classified as?

A

A carbohydrate and the most common monosaccharide.

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4
Q

What are the two structural forms of glucose?

A

Alpha and beta forms.

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5
Q

What is an isomer?

A

Molecules with the same molecular formula but different structural forms.

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6
Q

What type of glucose is starch made of?

A

Alpha glucose.

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7
Q

What type of glucose is cellulose made of?

A

Beta glucose.

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8
Q

What are the three main types of carbohydrates?

A
  • Monosaccharide
  • Disaccharide
  • Polysaccharide
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9
Q

What defines a monosaccharide?

A

Single sugar monomer, all are reducing sugars.

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10
Q

What is a disaccharide?

A

Sugar formed from 2 monosaccharides joined by a glycosidic bond in a condensation reaction.

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11
Q

What is a polysaccharide?

A

Many monosaccharides joined by a glycosidic bond in a condensation reaction.

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12
Q

What is the function of glycogen?

A

Main energy storage in animals.

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13
Q

what is the function of monosaccharides

A

provides energy for respiration, building blocks of polymers

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14
Q

function of disaccharides

A
  • sugar in germinating seeds
  • sugar in mammals milk
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15
Q

function of polysaccharides

A
  • erergy storage
  • cell wall structure
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16
Q

how are polysaccharides formed

A

when 2 + monosaccharides are joined by condensation reactions

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17
Q

how do animals store glucose

18
Q

What is the main energy storage material in plants?

19
Q

how do plants store excess glucose

20
Q

whats amylose

A

long, unbraided chain of alpha glucose. coiled structure. can fit into small spaces

21
Q

What is fiber’s role in the body?

A

Maintaining digestive health. helping to promote growth of good gut bacteria

22
Q

What are reducing sugars?

A

Sugars that can donate electrons.

23
Q

What are non-reducing sugars?

A

Sugars that cannot donate electrons.

24
Q

What type of bond forms between monosaccharides in carbohydrates?

A

Glycosidic bond.

25
why would monosaccaries be bonded together to form the more complex molecules
- transport - storage
26
how are glycosidic bonds formed
via condensation, 1 water molecule will be lost
27
What is the structure of triglycerides?
1 molecule of glycerol with 3 fatty acids attached. condensation reaction, 3x water molecules are lost
28
What is the difference between saturated and unsaturated fatty acids?
Saturated fatty acids have no double bonds; unsaturated have at least 1 double bond.
29
What is formed when a hydroxyl group on glycerol bonds with a carboxyl group of a fatty acid?
An ester bond.
30
What is the role of phospholipids in cell membranes?
Make up the bilayer of cell membranes.
31
What are the monomers of proteins?
Amino acids.
32
What is a dipeptide?
Formed when 2 amino acids join.
33
What is a polypeptide?
Formed when more than 2 amino acids join together.
34
What characterizes globular proteins?
Round and water soluble.
35
What characterizes fibrous proteins?
Long chains and insoluble in water.
36
What is the primary structure of a protein?
Sequence of amino acids in a polypeptide chain.
37
what is the secondary structure of proteins
Hydrogen bonds between amino acids
38
What types of bonds are present in the tertiary structure of proteins?
* Hydrogen bonds * Ionic bonds
39
What is a key feature of cellulose?
Main structural component of cell walls.
40
What type of bond is formed during glycosidic bond formation?
Covalent bond.
41
Fill in the blank: A polysaccharide is formed when more than ______ monosaccharides are joined together.
two
42
Fill in the blank: Triglycerides contain about ______ times as much energy per gram as carbohydrates.
2