1st Exam Flashcards

1
Q

The ff statements are true about biomolecule EXCEPT
a. covalent bonds exist between 2 atoms
b. Non-covalent interaction between 2 molecules (except ionic)
c. van der Waals repulsion and attraction exist in all
molecules and are significant only at close range
d. van der Waals repulsion and attraction, and hydrogen
bonds involve fulll charges; ionic interactions involve partial
charges.

A

D. partia; full

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2
Q

[Describe]

same molecular formula, different structure

A

Isomerism

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3
Q

butene and 2 methylpropene are

a. structural isomers
b. skeletal isomers
c. positional
d. functional
e. both a and b.

A

E

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4
Q

methanol and dimethyl ether are

a. structural isomers
b. skeletal isomers
c. functional
d. both a and b
e. both a and c

A

E

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5
Q

[Identify]
the hydrocarbon chain may be arranged in different ways,possess the same functional group, and belong to the same
homologous series

A

Skeletal Isomer

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6
Q

[Identify]
compounds with the same structural ‘backbone’ but different positions of substituents or functional groups. OR same functional group, different position thus different backbone

A

Positional Isomer

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7
Q

[Identify]
same molecular formula but the atoms are arranged so as to give different functional groups, thus belonging to different homologous series.

A

Functional

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8
Q

[Identify]

Two functional isomers that are rapidly interchanging

A

Tautomers

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9
Q

[Identify]

Isomers that are oriented differently in space

A

Stereoisomers

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10
Q

propane-1-ol and propane-2-ol are

a. functional isomers
b. positional isomers
c. skeletal isomers
d. tautomers

A

B

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11
Q

Amphiphilic compounds have _____ head and _____tail

A

hydrophilic;hydrophobic

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12
Q

What is the most practical and useful arrangement of amphiphilic compounds

A

bilayer

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13
Q

What are the building blocks of carbohydrates?

A

Monosaccharides

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14
Q

What is the basis in classifying aldoses and ketoses?

A

Reactive groups

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15
Q

What is the basis in classifying trioses, tetroses, pentoses?

A

Number of carbon atoms

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16
Q

What is the basis in classifying monosaccharides, disaccharides, trisaccharides?

A

Number of sugar units

17
Q

The following are monosaccharides EXCEPT

a. glyceraldehide
b. glucose
c. lactose
d. fructose

A

C

18
Q

The following are disaccharides EXCEPT

a. galactose
b. lactose,
c. sucrose
d. maltose

A

A

19
Q

Which is an oligosaccharide?

a. dextrin
b. peptidoglycan
c. proteoglycan
d. AOTA

A

A - b and c are polysaccharides specifically, heteropolysaccharide

20
Q

Glycogen, starch, inulin and cellulose are examples of

a. oligosaccharide
b. homopolysaccharide
c. heteropolysaccharide
d. A and B
e. A and C

A

D

21
Q

Amylose + Amylopectin = ______

A

starch

22
Q

starch:a(1,4)::cellulose:____

A

B(1,4)

23
Q

Which is true of glycogen?

a. has a(1,4) linkages in the branched chain
b. has a(1,6) in the linear chain
c. more compact than amylopectin
d. both A and B
e. AOTA

A

C

24
Q

T/F

Anomers and Epimers are exclusive to carbohydrates.

A

T

25
Q

Anomers are cyclic stereoisomers. Such isomers are classified as
a (OH below ring) and B(OH above ring). Interconversion between these two is called

A

Mutarotation

26
Q

C-4 epimers differ in which carbon?

A

4th

27
Q

Amylose + Amylopectin = ______

A

starch

28
Q

starch:a(1,4)::cellulose:____

A

B(1,4)

29
Q

Which is true of glycogen?

a. has a(1,4) linkages in the branched chain
b. has a(1,6) in the linear chain
c. more compact than amylopectin
d. both A and B
e. AOTA

A

C

30
Q

T/F

Anomers and Epimers are exclusive to carbohydrates.

A

T

31
Q

Anomers are cyclic stereoisomers. Such isomers are classified as
a (OH below ring) and B(OH above ring). Interconversion between these two is called

A

Mutarotation

32
Q

C-4 epimers differ in which carbon?

A

4th

33
Q

Amylose + Amylopectin = ______

A

starch

34
Q

starch:a(1,4)::cellulose:____

A

B(1,4)

35
Q

Which is true of glycogen?

a. has a(1,4) linkages in the branched chain
b. has a(1,6) in the linear chain
c. more compact than amylopectin
d. both A and B
e. AOTA

A

C

36
Q

T/F

Anomers and Epimers are exclusive to carbohydrates.

A

T

37
Q

Anomers are cyclic stereoisomers. Such isomers are classified as
a (OH below ring) and B(OH above ring). Interconversion between these two is called

A

Mutarotation

38
Q

C-4 epimers differ in which carbon?

A

4th