Deck 22: Biochemistry

Question 1

Which of the following fatty acids is most likely to be a solid at room temperature?

A)

B)

C)

D)

E)

Answer 1

Question 2

Which of the following fatty acids is most likely to be a liquid at room temperature?

A)

B)

C)

D)

E)

Answer 2

Question 3

Give the definition of biochemistry.

A) the study of the chemistry of living organisms
B) the study of the biology of dead organisms
C) the study of the chemistry of dead organisms
D) the study of the biology of living organisms
E) the study of polymers

Answer 3

the study of the chemistry of living organisms

Question 4

Identify fructose.

A)

B)

C)

D)

E)

Question 5

Choose the saturated fatty acid from the compounds below.

A)

B)

C)

D)

E)

Question 6

Which of the following is an example of a ketopentose?

A)

B)

C)

D)

E)

Question 7

Choose the monosaccharide from the compounds below.

A)

B)

C)

D)

E)

Question 8

Choose the polyunsaturated fatty acid from the compounds below.

A)

B)

C)

D)

E)

Question 9

Which of the following is an example of an aldohexose?

A)

B)

C)

D)

E)

Question 10

Type I diabetes develops when the pancreas does not make enough

A) cholesterol.
B) sucrose.
C) blood.
D) insulin.
E) iron.

Question 11

Which of the following is an example of a ketohexose?

A)

B)

C)

D)

E)

Question 12

Choose the polyunsaturated triglyceride from the compounds below.

A)

B)

C)

D)

E)

Question 13

Choose the saturated triglyceride from the compounds below.

A)

B)

C)

D)

E)

Question 14

Which of the following is an example of an aldopentose?

A)

B)

C)

D)

E)

Question 15

What type of lipid is the following compound?

A) steroid
B) phospholipid
C) glycolipid
D) fatty acid
E) triglyceride

Question 16

Identify glucose.

A)

B)

C)

D)

E)

Question 17

Identify the difference between a saturated fat and an unsaturated fat.

A) A saturated fat tends to be a liquid at room temperature and generally comes from warm-blooded animals. An unsaturated fat tends to be a solid at room temperature and comes from plants.
B) A saturated fat tends to be a solid at room temperature and generally comes from plants. An unsaturated fat tends to be a liquid at room temperature and comes from warm-blooded animals.
C) A saturated fat tends to be a liquid at room temperature and generally comes from plants. An unsaturated fat tends to be a solid at room temperature and comes from warm-blooded animals.
D) A saturated fat tends to be a solid at room temperature and generally comes from warm-blooded animals. An unsaturated fat tends to be a solid at room temperature and comes from plants.
E) A saturated fat tends to be a solid at room temperature and generally comes from warm-blooded animals. An unsaturated fat tends to be a liquid at room temperature and comes from plants.

Question 18

What type of lipid is the following compound?

A) steroid
B) phospholipid
C) glycolipid
D) fatty acid
E) triglyceride

Question 19

What type of lipid is the following compound?

A) steroid
B) phospholipid
C) glycolipid
D) fatty acid
E) triglyceride

Question 20

Identify the source below that does NOT contain triglycerides.

A) corn oil
B) olive oil
C) whale oil
D) beef fat
E) diesel oil

Question 21

Collagen is an example of

A) a fibrous protein.
B) an α-helix.
C) a globular protein.
D) a tertiary structure.
E) a β-pleated sheet.

Question 22

Which of the following shows all of the tripeptides that can be formed from one molecule each of glycine (Gly),valine (Val),and leucine (Leu)?

A) GlyValLeu, GlyLeuVal, ValLeuGly, ValGlyLeu, LeuGlyVal, LeuValGly
B) GlyValLeu, GlyLeuVal, LeuGlyVal
C) ValGlyLeu, GlyValLeu, GlyLeuVal, LeuGlyVal
D) ValGlyLeu and GlyLeuVal
E) GlyValLeu

Question 23

Identify a base that is NOT in DNA.

A) adenine
B) cytosine
C) thymine
D) uracil
E) guanine

Question 24

Which of the following shows all of the tripeptides that can be formed from one molecule each of alanine (Ala),methionine (Met),and proline (Pro)?

A) AlaMetPro
B) AlaMetPro and AlaProMet
C) AlaMetPro, AlaProMet, ProMetAla, ProAlaMet, MetProAla, MetAlaPro
D) AlaMetPro, AlaProMet, ProAlaMet
E) AlaMetPro, AlaProMet, ProAlaMet, MetProAla

Question 25

Which of the following describes a primary protein structure?

A) protein structure maintained by disulfide linkages
B) amino acid sequence maintained by peptide bonds
C) protein chains maintained by interactions of peptide backbones
D) arrangement of multiple protein subunits
E) protein structure maintained through multiple hydrogen bonds

Question 26

What type of lipid is the following compound?

A) steroid
B) phospholipid
C) glycolipid
D) fatty acid
E) saturated fat

Question 27

The ability for DNA to replicate itself was discovered by

A) Curie.
B) Einstein.
C) Watson and Crick.
D) Galileo.
E) Edison.

Question 28

Identify the sugar in RNA.

A) ribose
B) deoxyribose
C) fructose
D) glucose
E) galactose

Question 29

Hemoglobin is an example of

A) a fibrous protein.
B) an α-helix.
C) a globular protein.
D) a tertiary structure.
E) a β-pleated sheet.

Question 30

How many of the carbons in the following structure are chiral?

A) 3
B) 0
C) 2
D) 1
E) 4 or more

Question 31

Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys),threonine (Thr),and hisitidine (His)?

A) LysThrHis
B) LysThrHis, LysHisThr, HisThrLys, HisLysThr, ThrLysHis, ThrHisLys
C) LysThrHis, LysHisThr, HisLysThr, ThrHisLys
D) LysThrHis, LysHisThr, HisLysThr
E) LysThrHis and LysHisThr

Question 32

Choose the disaccharide from the compounds below.

A)

B)

C)

D)

E)

Question 33

Identify the interaction that does NOT maintain tertiary structure.

A) disulfide bond
B) salt bridge
C) carbon-carbon bond
D) hydrophobic interaction
E) hydrogen bond

Question 34

Identify the sugar in DNA.

A) ribose
B) deoxyribose
C) fructose
D) glucose
E) galactose

Question 35

The following is part of a DNA sequence.What is its complementary sequence? TCGTAAGCTTGCG

A) AGCATTCGAACGC
B) CGCAAGCTTACGA
C) TCATTCAC
D) GCGTTCGAATGCT
E) TCGTAAGCTTGCG

Question 36

Identify a base that is NOT in RNA.

A) adenine
B) cytosine
C) thymine
D) guanine
E) uracil

Question 37

Which of the following form between glycerol and fatty acids to form triglycerides?

A) anhydride bonds
B) sulfide linkages
C) hydrogen bonds
D) ether linkages
E) ester linkages

Question 38

Choose the polysaccharide from the compounds below.

A)

B)

C)

D)

E)

Question 39

Which of the following statements is TRUE?

A) A nucleotide is composed of a sugar, a base and a phosphate group.
B) A codon is a sequence of 3 bases that codes for a single amino acid.
C) A gene is a portion of DNA that codes for a single protein.
D) Genes are contained in structures called chromosomes.
E) All of the above are true.

Question 40

The following is part of a DNA sequence.What is its complementary sequence? AGTTCGAGCCT

A) AGTTCGAGCCT
B) TCCGAGCTTGA
C) CAGTCCA
D) AGGCTCGAACT
E) TCAAGCTCGGA

Question 41

Which of the following bond monosaccharide units together into polysaccharides?

A) ester bonds
B) glycosidic linkages
C) disulfide linkages
D) amine bonds
E) ketone linkages

Question 42

Identify the polysaccharide.

A) fructose
B) maltose
C) cholesterol
D) starch
E) estradiol

Question 43

Which one of the following amino acids contains an acidic side chain?

A) glutamic acid
B) asparagine
C) cysteine
D) arginine
E) valine

Question 44

Identify the smallest amino acid.

A) glycine
B) isoleucine
C) phenylalanine
D) cysteine
E) aspartic acid

Question 45

Which one of the following amino acids contains a polar side chain?

A) valine
B) glycine
C) tyrosine
D) leucine
E) phenylalanine

Question 46

Identify the compound that is NOT an amino acid.

A) phenylalanine
B) methionine
C) histidine
D) guanine
E) tryptophan

Question 47

Which of the following statements is TRUE?

A) Monosaccharides are the building blocks of amino acids.
B) Nucleotides are the building blocks of polysaccharides.
C) Fatty acids are responsible for DNA replication.
D) Polysaccharides are the building blocks of amino acids.
E) Carbohydrates are water soluble and responsible for short term energy storage.

Question 48

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

A) tripeptide
B) glyceride
C) α-helix
D) amino acid
E) fatty acid

Question 49

Identify the disaccharide.

A) estradiol
B) cellulose
C) galactose
D) triglyceride
E) sucrose

Question 50

In the protein,Arg-Pro-Lys-Val,which amino acid contains the C-terminal group?

A) arginine
B) lysine
C) valine
D) proline

Question 51

Which of the following is a type of nucleic acid?

A) DNA
B) amino acid
C) tripeptide
D) carbohydrate
E) lipid

Question 52

Which of the following has a tertiary protein structure?

A) ketone
B) amide
C) ribonucleotide
D) amino acid
E) fibrous protein

Question 53

Identify the bonds that connect the protein structures in a pleated sheet.

A) ester linkages
B) sulfide linkages
C) peptide bonds
D) hydrogen bonds
E) glycosidic linkages

Question 54

Identify the most abundant organic substance on earth.

A) cellulose
B) fructose
C) amylopectin
D) starch
E) glycine

Question 55

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

A) fatty acid
B) triglyceride
C) lipid
D) β-pleated sheet
E) dipeptide

Question 56

Which one of the following amino acids contains a basic side chain?

A) glutamine
B) alanine
C) lysine
D) methionine
E) glycine

Question 57

Which of the following link together amino acid units?

A) glycosidic linkages
B) sulfide linkages
C) peptide bonds
D) hydrogen bonds
E) ester linkages

Question 58

In the protein,Val-Thr-His-Ala,which amino acid contains the N-terminal group?

A) histidine
B) threonine
C) alanine
D) valine

Question 59

Identify the compound that is a steroid.

A) fructose
B) cholesterol
C) sucrose
D) glycerol
E) cellulose

Question 60

Which of the following statements is TRUE?

A) Cytosine and Thymine are a complementary base pair that forms 3 hydrogen bonds.
B) Adenine and Guanine are a complementary base pair that forms 3 hydrogen bonds.
C) Cytosine and Guanine are a complementary base pair that forms 2 hydrogen bonds.
D) Thymine and Adenine are a complementary base pair that forms 2 hydrogen bonds.
E) Thymine and Guanine are a complementary base pair that forms 2 hydrogen bonds.

Question 62

How many chromosomes are in the nuclei of human cells?

A) 42
B) 45
C) 46
D) 49
E) 50

Question 63

Match the following.

A)glycine
B)aspartic acid
C)alanine
D)serine
E)phenylalanine
F)lysine
1) 2) 3) 4) 5) 6)

Question 64

Identify the type of bond between the two strands of DNA.

A) hydrogen bonds
B) London dispersion forces
C) dipole-dipole bonds
D) amide bonds
E) water bonds

Question 65

Why does the melting point of fatty acids decrease with the number of double bonds present?

Question 66

What is a codon?

Question 67

What is the difference between an α-glycosidic linkage and a β-glycosidic linkage? What implication does this have for the strength of the intermolecular forces between molecules?

Question 68

How do cis- and trans-fats differ?

Question 69

Why are lipids well-suited as structural components of cell membranes?