Cancel
© 2016 start-seeking.ru
card-image
camera

Chemistry

Set Details Share
Helpfulness: 0
created 2 years ago by jcwuest
314 views

updated 2 years ago by jcwuest

show more
1

1) The structural formulas of amino acids are the same EXCEPT for the

A)hydrogen bonding

B)alpha carbon

C)carboxyl group

D)amino group

E)side (R) group

E)side (R) group

2

2) Glycine is the only naturally occurring amino acid that is

A)positively charged

B)negatively charged

C)achiral

D)in the L- form

E)neutral

C)achiral

3

3) Hemoglobin is an example of a protein with

A)a globular structure

B)a primary structure only

C)primarily an alpha helix structure

D)two protein chains held together

E)primarily a beta-pleated sheet structure

A)a globular structure

4

4) Within hemoglobin, the heme functions as

A) a reducing agent

B)a disulfide bridge

C)one of the four protein subunits

D)an oxygen carrier

E)an alpha subunit

D)an oxygen carrier

5
card image

5)Name the following compound

A)4-hexanal

B)hexanoic acid

C)ethyl propyl ether

D)ethyl propanoate

E)ethyl butanoate

E)ethyl butanoate

6

6) Which carboxylic acid in the list below is an aromatic carboxylic acid?

A)citric acid

B)butyric acid

C)benzoic acid

D)acetic acid

E)benzene

C)benzoic acid

7

7)What is the common name for ethanoic acid?

A)citric acid

B)acetic acid

C)butyric acid

D)stearic acid

E)formic acid

B)acetic acid

8
card image

8)What is the IUPAC name for this compound?

A)3-methylbutanoic acid

B)pentanoic acid

C)2-methyl-4-butanoic acid

D)y-methylbutanoic acid

E)y-methyl butyric acid

A)3-methylbutanoic acid

9

9)with the correct choice of acid, the product(s) of the acid hydrolysis of N-methylbenzamide could be

A)methanol and benzoic acid

B)benzoic acid and ethylamine

C)formic acid and aniline

D)benzoic acid and methylammonium chloride

E)formic acid, phenol, and ammonia

D)benzoic acid and methylammonium chloride

10

10)amides are derivatives of ____ and ____

A)amines; esters

B)alkanes;amines

C)amines;carboxylic acids

D)alcohols; carboxylic acids

E)carboxylic acids; alcohols

C)amines; carboxylic acids

11

11) The reaction of butanoicacids and dimethylamine gives

A)N-methylbutanamide

B)N-methylbutanamine

C)N-ethylbutanamide

D)N,N-dimethylbutanamide

E)N,N-methylbutanamine

D)N,N-dimethylbutanamide

12
card image

12)One name for this compound is

A)N-ethylacetamide

B)ethylpropionamide

C)pentanamide

D)N-ethylpropanamide

E)N,N-diethylacetamide

D)N-ethylpropanamide

13

13)When acetic acid reacts with ammonia, NH3, the reaction called amidation yields

A)ammonium acetate

B)ethylammonium

C)amino acetate

D)acetamide

E)acetamine

D)acetamide

14
card image

14) What is the name of this compound?

A)trimethylamine

B)ethyldimethylamine

C)ethylmethylamine

D)ethylmethylnitride

E)diethylamine

B)ethyldimethylamine

15

15) Denaturation of a protein

A)can only occur in a protein with quaternary structure

B)changes the primary structure of a protein

C)hydrolyzes peptide bonds

D)is always irreversible

E)disrupts the secondary, tertiary, or quarternary structure of a protein

E)disrupts the secondary, tertiary, or quarternary structure of a protein

16

16) What kinds of interactions are NOT part of tertiary protein structure?

A)peptide bonds

B)salt bridges

C)disulfide bonds

D)hydrophobic interactions

E)hydrophilic interactions

A)peptide bonds

17

17)The function of myoglobin is to

A)carry vitamins in the blood

B)provide strength in cartilage

C)carry oxygen in the blood

D)support the skeletal muscles

E)carry oxygen in the muscle

E)carry oxygen in the muscle

18

18) Which of the following is an example of a secondary protein structure?

A)fatty acid

B)amino acid

C)trigylceride

D)dipeptide

E)alpha Helix

E)alpha Helix

19

19) In the peptide Ala-Try-Gly-Phe, the N-terminal amino acid is

A)phenylalanine

B)tryptophan

C)glycine

D)alanine

E)aspartic acid

D)alanine

20

20) A ___ consists of a nitrogen-containing base and a sugar

A)pyrimidine

B)nucleoside

C)base pair

D)nucleotide

E)complementary base

B)nucleoside

21

21) The bonds that link the base pairs in the DNA double helix are

A)hydrophobic bonds

B)ester bonds

C)peptide bonds

D)hydrogen bonds

E)ionic bonds

D)hydrogen bonds

22

22)When DNA replicates, a guanine forms a base pair with

A)guanine-thymine

B)adenine-thymine

C)adenine-cytosine

D)guanine-cytosine

E)adenine-cytosine

D)guanine-cytosine

23

23) In the synthesis of mRNA, an adenine in the DNA pairs with

A)adenine

B)uracil

C)cytosine

D)guanine

E)thymine

B)uracil

24

24) Which of the following can NOT be found in a nucleotide of RNA?

A)ribose

B)purine

C)deoxyribose

D)pyrimidine

E)phosphate

D)pyrimidine

25

25)which of the following is found in RNA but not in DNA?

A)guanine

B)deoxyribose

C)uracil

D)cytosine

E)thymine

C)uracil

26

26) When DNA replicates, a guanine forms a base pair with

A)cytosine

B)guanine

C)uracil

D)thymine

E)adenine

A)cytosine

27

27) Which bases "pair" in RNA? Explain or show why they pair.

Adenine pairs to Uracil (2 H-bonds) and Guanine pairs to Cytosine (3 H-bonds)

28

28) Which bases "pair" in DNA? Explain or show why they pair.

card image

Adenine pairs to Thymine (2 H-bonds) and Guanine pairs to Cytosine (3 H-bonds)

29

29) Describe how myoglobin and hemoglobin are similar. How are they different.

Mb:

  • 1 Peptide chain
  • 153 amino acids
  • 17,000 g/moles (molecular weight)
  • 1 heme unit
  • 'stores' O2 in muscles

Hb:

  • 4 peptide chains
  • 153 amino acids
  • 17,000 per chain, 68,000 g/moles (molecular weight)
  • 4 heme unit
  • 'transports' O2 from lungs to muscles
30

30) Which base is found in DNA but NOT in RNA?

Thymine

31

31) Explain/define primary structure as it applies to a protein.

card image

Primary structure sequence of amino acids in a peptide chain

32

32) Explain/define secondary structure as it applies to a protein.

card image

Secondary structure-alpha helix interaction (H-bonds) between 'N' in amide and C=O of amide

33

33) Explain/define Tertiary structure as it applies to a protein.

card image

Tertiary structure- folding of alpha helix protein onto itself

interaction of 'R' side chains of amino acids

  • salt bridges (+AA and -AA)
  • Non-polar groups interacting w/ each other
  • polar groups (H-bonds)
  • S-S bonds
34

34) Explain/define Quaternary structure as it applies to a protein.

card image

Quaternary structure-interaction of 2 or more peptide chains to make 1 protein

35

35) Draw a tripeptide (using any amino acids that you want). Label the C terminus, the N terminus, and circle a peptide bond.

card image
36

36) Draw a primary structure for either DNA or RNA. Your structure should include 3 Nucleotides.

card image

phosphate

sugar-base

phosphate

sugar-base

phosphate

sugar-base

37

37) In the peptide Ser-Cys-Ala-Gly, the C-terminal end is

A) Glycerine

B) Serotonin

C) alanine

D) glycine

E) serine

D) glycine

38

38)Acids and bases denature a protein by disrupting

A) ionic bonds and hydrophobic interactions

B)ionic bonds and hydrogen bonds

C)peptide bonds and ionic bonds

D)hydrophobic interactions and peptide bonds

E)amide bonds and alkene bonds

B)Ionic bonds and hydrogen bonds

39

39) Hemoglobin has a total of ____ protein chains in its quaternary structure.

A) one

B) two

C) three

D) four

E) five

C) four

40

40) The heme in hemoglobin is a(n)

A)pleated sheet area in the hemoglobin molecule

B)helix area in the hemoglobin molecule

C)small molecule within a protein

D)protein chain

E)oxygen molecule within the hemoglobin molecule

C) small molecule within a protein

41

41) The alpha helix of the secondary structure of a protein is held together by ____ between two widely separated parts of a protein chain.

A)disulfide bridges

B)hydrophilic interactions

C)hydrophobic interactions

D)hydrogen bonds

E)salt bridges

D)hydrogen bonds

42

42) A peptide bond contains which kind of functional group?

A) amide

B) amine

C)ketone

D)alcohol

E)carboxylic acid

A)amide

43

43) Heavy metals denature proteins by

A) disrupting hydrophobic interactions

B) releasing amino acids

C) changing the pH of the protein solution

D) changing the temperature of the protein solution

E)disrupting disulfide bonds

E) disrupting disulfide bonds

44

44) In a typical amino acid zwitterion, the caroxylate end is

A) positively charged

B)soluble in a nonpolar solvent

C) attached to amine

D)negatively charged

E)neutral

D)negatively charged

45

45) Which group of Carbohydrates cannot be hydrolyzed to give smaller molecules?

A)monosaccharides

B)trisaccharides

C)oligosaccharides

D)polysaccharides

E)disaccharides

A)monosaccharides

46

46)A monosaccharide that consists of 5 carbon atoms, one of which is in a ketone groupe is classified as a(n)

A)aldopentose

B)aldotetrose

C)aldohexose

D)ketopentose

E)ketotetrose

D)ketopentose

47

47) A glycosidic bond between two monosaccharides can also be classified as a(n)

A)double bond

B)alcohol bond

C)ether bond

D)achiral bond

E)ester bond

C)ether bond

48

48) which of the following contains alpha-1,6-branches

A)amylose

B)maltose

C)sucrose

D)glycogen

E)cellulose

D)glycogen

49

49)under acid hydrolysis conditions, starch is converted to

A)galactose

B)glucose

C)xylose

D)fructose

E)maltose

B)glucose

50

50)amino acids that are not synthesized in the body and must be obtained from diet are called

A)nonpolar

B)polar

C)complete

D)essential

E)incomplete

E)incomplete

51

51) The following amino acid R group chain is

-CHCH3-CH3

A)hydrophilic

B)acidic

C)basic

D)polar

E)hydrophobic

E)hydrophobic

52

52) Amylose is a form of starch which has

A)carbon-carbon bonds joining glucose units

B)both alpha-1,4-and Beta-1,4-bonds between glucose units

C)only alpha-1,4-links bonds glucose units

D)hemiacetal links joining glucose units

E)only beta-1,4-bonds between glucose units

C)only alpha-1,4-links bonds glucose units

53

53)In the L-isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written

A)on the right of the bottom chiral carbon

B)on the left of the middle chiral carbon

C)on the left of the bottom chiral carbon

D)on the left of the top chiral carbon

E)on the right of the top chiral carbon

C)on the left of the bottom chiral carbon

54

54)The peptide bonds that combine amino acids in a protein are

A)sulfide bonds

B)amide bonds

C)ester bonds

D)ether bonds

E)glycosidic bonds

B)amide bonds

55

55) The bonds that are important in the secondary structure of a protein are

A)salt bridges

B)hydrogen bonds

C)disulfide bonds

D)hydrophobic interactions

E)peptide bonds

B)hydrogen bonds

56

56)What kinds of interactions are NOT part of tertiary protein structure?

A)hydrophilic interactions

B)disulfide bonds

C)salt bridges

D)peptide bonds

E)hydrophobic interactions

D)peptide bonds


Related pages


phosphorus molecular massthe chromosomal theory of inheritance states thatdifference between agglutinogens and agglutininsa phospholipid is usuallythe whipping boy quizsynonyms tersepulmonary circuit definitionpartial reinforcement schedulethe collecting system in the kidney is responsible formitosis in animal cellfossa ovalesphotosynthesis is not responsible formedical asepsis definitionap biology chapter 29 reading guide answersglycogen is formed in the liver during themarieb 10th editionskull names bonesdo plant cells have a plasma membranedefine basophilwhich nerves carry nerve impulses away from the spinal cordwhat is the special role of the tonsilstidal volume is air ________displays numbers with a fixed number of decimal placesexplain the difference between an atom and an elementlife the science of biology tenth editionlevittown apushpostzygoticskeleton axialdiploid sporophytewhat cranial nerve controls swallowingwhat produces antibodieswhat happens in a cell during mitosiswhich process takes place in the cytoplasmcampbell biology 9th edition chapter 6nursing diagnosis for ovarian cancercolumn of bertin kidneywhat is dorsal recumbentprint multiplication flash cardswhat is atrial systolewhat is spinal cavitydefine disinfectant in microbiologywhat primary factor governs the quality of a food proteinna2cr2o7 compound namestorage organ for urine is the urinaryorigin of the gastrocnemiushow many protons are in goldbay of pigs apushamaretto martini drink recipesdntp ntpwhat is the primary function of the calvin cycleinotropic medsincrease vital capacityurinary analgesicsovum dischargea lid for the larynxlayers of the large intestinedefine antalgic gaitmuscarinic agonistsplants contain meristems whose major function is todefine entropy in biologyhomozygous simple definitioninflammation of the kidney and renal pelvisthe mere exposure effect demonstrates thatdouble fertilization of angiospermsdimethyl ether polaritylumen of the digestive tractvocabulary for the gregriffith orientationfibular veininpatient hospital codingadductor magnus exercisealtruistiswords with root credpresidents iq scoresdefine repolarization of the heart