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ChT Reviewer > ORG CONCEPTS > Flashcards

ORG CONCEPTS Flashcards

1
Q

The two strands of DNA are said to be
A. oppositely charged
B. complementary
C. identical
D. partners

A

B. complementary

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2
Q

The amino acid sequence of a polypeptide chain comprises the _____ structure of the protein.
A. primary
B. secondary
C. tertiary
D. quarternary

A

A. primary

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3
Q

An amino acid with a polar R group
A. Cysteine
B. Phenylalanine
C. Leucine
D. Valine

A

A. Cysteine

“polar R group”

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4
Q

An amino acid with a basic R group
A. Alanine
B. Arginine
C. Proline
D. Glutamine

A

B. Arginine

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5
Q

An amino acid that is electrically neutral at pH5
A. Aspartic acid
B. Histidine
C. Glycine
D. Threonine

A

C. Glycine

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6
Q

An amino acid that will move towards the cathode at pH10
A. Glutamic acid
B. Tyrosine
C. Lysine
D. Valine

A

C. Lysine

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7
Q

A test for the presence of benzene ring in protein
A. Biuret
D. Xanthoproteic

A

D. Xanthoproteic

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8
Q

Protein present in bones
A. collagen
B. fibroin
C. elastin
D. keratin

A

A. collagen

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9
Q

Protein in grains
A. lactalbumin
B. myosin
C. leucasin
D. globulin

A

globulin

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10
Q

Simple protein in blood
A. edestin
B. fibrinogen
C. myosin
D. glutenin

A

B. fibrinogen

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11
Q

An alkaloidal reagent that is used in the treatment of burns
A. tannic acid
B. picric acid
C. phosphotungstic acid
D. phosphomolybdic acid

A

A. tannic acid

“TAN” = burns

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12
Q

A conjugated protein with colored pigment
A. chromoprotein
B. glycoprotein
C. nucleoprotein
D. phosphoprotein

A

A. chromoprotein

“CHROMO” = color

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13
Q

The Xanthoproteic test is a test for the presence of …
A. Tryptophan
B. Serine
C. Tyrosine
D. Threonine

A

C. Tyrosine

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14
Q

A color test for protein that uses glyoxylic acid as reagent
A. Millons
B. Xanthoproteic
C. Hopkins Cole

A

C. Hopkins Cole

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15
Q

A dipolar ion formed when amino acid undergoes self protonation
A. anion
B. cation
C. Zwitter ion
D. AOTA

A

C. Zwitter ion

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16
Q

DNA is the genetic material of the cells. The building block of DNA are:
A. amino acids
B. monosaccharides
C. disaccharides
D. nucleotides

A

D. Nucleotides

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17
Q

Enzymes are molecules that speed up chemical reactions. All enzymes are
A. carbohydrates
B. nucleic acids
C. proteins
D. lipids

A

C. proteins

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18
Q

When proteins are broken down by enzymes, the products are:
A. amino acids
B. carbohydrates
C. fatty acids
D. nucleic acids

A

A. amino acids

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19
Q

A nucleotide contains _____.
A. sulfur
B. nitrogen base
C. 6-carbon sugar
D. all of the above

A

B. nitrogen base

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20
Q

Which of the following vitamins are all fat soluble.
A. ABCD
B. ACDE
D. ADEK
D. BCDE

A

D. ADEK

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21
Q

Defficiency of this vitamin will cause scurvy.
A. Vit A
B. Vit B
C. Vit C
D. Vit D

A

vitamin C

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22
Q

Vitamin B6 is also known as,
A. Niacin B. Pyridoxin C. Thiamin D. Rivoflavin

A

B. Pyridoxin

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23
Q

A vitamin that function as an antioxidant.
A. Vit A B. Vit B C. Vit C D. Vit D

A

vitamin C

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24
Q

Phylloquinone is commonly known as,
A. Vit B3 B. Vit K C. Vit F D. Vit H

A

B. Vit K

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25
The nucleotide of DNA have __________ bases. A. purine B. pyrimidine C. either A or B D. neither A or B
C. either A or B
26
The preparation of alkyl halide that obeys Markovnikovs Rule A. Hydrogenation C. Hydrohalogenation B. Halogenation D. Hydration
C. Hydrohalogenation addition of alkyl halide to alkene
27
The solvent used for the preparation of Grignard reagent. A. Alcohol C. Acid B. Ether D. Ester
B. Ether
28
Which of the following alcohol will react faster with HBr? A. n-butanol C. 2-butanol B. 2-methyl-1-propanol D. 2-methyl-2-propanol
A. n-butanol
29
The enzyme that aids in the fermentation of sugar to alcohol. A. Diastase C. Maltase B. Zymase D. Glucosidase
B. Zymase
30
Which method is not used in the preparation of simple alcohol. A. Hydration of alkenes C. Fermentation of sugar B. Hydrolysis of alkyl halides D. Oxidation of alkenes
D. Oxidation of alkenes produce carbonyls
31
The method of preparation that gives high percentage of alcohol. A. Diborane method C. Sulfonation B. Hydrolysis D. Reduction
B. Hydrolysis
32
A toxic compound formed by distillation of ethylene glycol. A. Diethylene glycol C. Ethylene oxide B. Diethyl ether D. Dioxane
C. Ethylene oxide
33
Which compound has the highest density? A. Fluorobutane C. Chloropentane B. 2-methyl-1-iodopentane D. Bromohexane
B. 2-methyl-1-iodopentane high molecular weight + presence of halogens = high density
34
Alcohol act as an acid if it reacts with; A. HBr C. K B. CH3ONa D. NaOH
D. NaOH
35
A reaction of ester that will produce another ester. A. Alcoholysis B. Ammonolysis C. Hydrolysis D. Ozonolysis
D. Ozonolysis
36
A soap use for water proofing. A. Ag soap B. Al soap C. Cr soap D. Cu soap
B. Al soap
37
A soap used as dusting powder. A. Al palmitate B. Cu oleate C. K laurate D. Zn stearate
D. Zn stearate
38
A soap used for treating ulcer. A. Al palmitate B. Cu oleate C. K laurate D. Zn stearate
C. K laurate
39
An ester used as banana flavoring. A. ethylmethanoate B. methylpentanoate C. pentylethanoate D. octylethanoate
C. Pentylethanoate or isoamyl acetate
40
An inorganic ester that lowers blood pressure. A. ethyl nitrate B. ethyl sulfate C. pentyl nitrate D. glyceryl trinitrate
D. glyceryl trinitrate
41
The flavor imparted by isoamyisovalerate. A. Apple B. Banana C. Pear D. Pineapple
A. Apple
42
An aldehyde that smells like green apple. A. Methanal B. Ethanal C. Propanal D. Butanal
B. Ethanal or aldehyde
43
A ketone with ethereal fragrance. A. Methanone B. Ethanone C. Propanone D. Butanone
D. Butanone
44
The test for the presence of methyl carbonyl.
Haloforms
45
An organic salt used as dye fastener. A. Al ethanoate B. Ca stearate C. Fe butyrate D. Na chloride
D. Na chloride
46
A colorless and poisonous gas with an unpleasant odor. A. Acrolein B. Acrilan C. Crotonaldehyde D. Ketene
A. Acrolein
47
The primary source of alkanes. A. Petroleum B. Marsh gas C. Natural gas D. Biomass
A. Petroleum
48
The study of the three dimensional structure of molecules. A. Nomenclature B. Stereochemistry C. Structural theory D. Isomerism
B. Stereochemistry
49
Thermal decomposition of alkanes. A. Hydrogenation B. Combustion B. Oxidation C. Pyrolysis
C. Pyrolysis
50
Which of the alkanes below has the lowest boiling point A. n-pentane B. isopentane C. neopentane D. Sec-pentane
A. n-pentane
51
Electrovalent bond
ionic = greater than 1.7
52
coordinate covelent bond
formed when one atom donates both electrons to a bond, while the other atom contributes none.
53
The electron acceptor in CH3NO2 A. C B. N C. O D. H
D. H Electron Acceptors: In a molecule, an electron acceptor is typically an atom that has a higher electronegativity or can stabilize a negative charge effectively.
54
The electron donor in H2SO4 A. H B. O C. S D. NOTA
B. O Electron Donors: An electron donor is typically an atom or a group of atoms that can provide electrons to another atom or molecule.
55
The formal charge of P in H3PO3 A. +2 B. +1 C. 0 D. -1
C. 0 phosphorous acid
56
The structure of SO2 molecule. A. linear B. planar C. tetragonal D. tetrahedral
B. Planar has a lone pair = not tetrahedral
57
direct reserve source of enerrgy in the human muscle is
glycogen
58
Ethyl butanoate is an artificial flavor for A. apple C. orange B. banana D. pineapple
D. pineapple
59
The aldehyde used as preservative. A. Butanal C. Ethanal B. Propanal D. Methanal
D. Methanal
60
Freon is an example of A. hydrocarbon C. alcohol B. alkyl halide D. aldehyde
B. alkyl halide
61
Rubbing alcohol is an example of A. normal alcohol C. secondary alcohol B. primary alcohol D. tertiary alcohol
C. secondary alcohol
62
The hydrocarbon used as reference in measuring the quality of gasoline. A. n - hexane C. n - pentane B. n - heptane D. n - octane
B. n - heptane
63
The alcohol present in all drinking liquor. A. Methyl alcohol C. Isopropyl alcohol B. Ethyl alcohol D. Amyl alcohol
B. Ethyl alcohol
64
An organic compound with pleasant odor. A. Aldehyde C. Ester B. Alcohol D. Ether
C. Ester
65
The number of structural formulas possible for the alkyne C6H10. A. two C. four B. three D. five
C. four

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