Deck 22: Biochemistry

Question 1

What type of lipid is the following compound?

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

Answer 1

triglyceride

Question 2

Choose the saturated triglyceride from the compounds below.

A)
B)
C)
D)
E)

Answer 2

Question 3

Identify glucose.

A)
B)
C)
D)
E)

Answer 3

Question 4

What type of lipid is the following compound?

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

Question 5

Choose the disaccharide from the compounds below.

A)
B)
C)
D)
E)

Question 6

Identify the polysaccharide.

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

Question 7

Choose the saturated fatty acid from the compounds below.

A)
B)
C)
D)
E)

Question 8

Which of the following is an example of an aldohexose?

A)
B)
C)
D)
E)

Question 9

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

A)
B)
C)
D)
E)

Question 10

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

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

Question 11

Choose the monosaccharide from the compounds below.

A)
B)
C)
D)
E)

Question 12

Which of the following is an example of a ketopentose?

A)
B)
C)
D)
E)

Question 13

Choose the polyunsaturated fatty acid 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

Identify the disaccharide.

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

Question 16

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

A)
B)
C)
D)
E)

Question 17

What type of lipid is the following compound?

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

Question 18

Choose the polyunsaturated triglyceride from the compounds below.

A)
B)
C)
D)
E)

Question 19

What type of lipid is the following compound?

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

Question 20

Monosaccharide units are bonded together to form polysaccharides by which of the following?

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

Question 21

Choose the polysaccharide from the compounds below.

A)
B)
C)
D)
E)

Question 22

Which of the following statements is TRUE?

A)A nucleotide is composed of a sugar, a base, and a sulfate group.
B)A codon is a sequence of three bases that codes for a single peptide.
C)A gene is a portion of DNA that codes for a single protein.
D)Three bases in a sequence form a chromosome, and a set of chromosmes builds up DNA.
E)Two helices that form one DNA molecule are held together by peptide bonds.

Question 23

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 24

Which of the following link together into amino acid units?

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

Question 25

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 26

What is the appropriate name for the strongest intermolecular force holding together two strands of DNA to form a double helix?

A)hydrogen bonds
B)London dispersion forces
C)dipole-dipole bonds
D)ionic bonds
E)covalent bonds

Question 27

Which one of the following amino acids does not contain a basic side chain?

A)arginine
B)histidine
C)lysine
D)threonine

Question 28

Which of the following is a type of nucleic acid?

A)RNA
B)amino acid
C)dipeptide
D)carbohydrate
E)lipid

Question 29

Which of the following hold two strands of DNA in an a-helix?

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

Question 30

Which of the following has a tertiary protein structure?

A)amino acid
B)fibrous protein
C)nucleotide
D)fatty acid
E)globular protein

Question 31

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

A)amino acid
B)fatty acid
C)lipid
D)( $\beta$ -pleated sheet)
E)dipeptide

Question 32

Which of the following statements is TRUE?

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

Question 33

Which of the following statements is TRUE?

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

Question 34

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 35

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

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

Question 36

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

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

Question 37

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 38

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

A)dipeptide
B)triglyceride
C)( $\alpha$ -helix)
D)amino acid
E)fatty acid

Question 39

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 40

How many chromosomes are in the nuclei of human cells?

A)42
B)44
C)46
D)48
E)52

Question 41

In the sequence His-Tyr-Val-Pro, which amino acid contains the N-terminal group?

A)valine
B)tyrosine
C)proline
D)histidine

Question 42

What is a codon?

Question 43

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

A)valine
B)histidine
C)glutamine
D)glutamic acid

Question 44

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

Question 45

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

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

Question 46

Match the following.

A)glycine
B)lysine
C)alanine
D)serine
E)phenylalanine
F)aspartic acid

Question 47

How do cis- and trans-fats differ?

Question 48

Match the following.

A)glycine
B)lysine
C)alanine
D)serine
E)phenylalanine
F)aspartic acid

Question 49

Match the following.

A)glycine
B)lysine
C)alanine
D)serine
E)phenylalanine
F)aspartic acid

Question 50

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

Question 51

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

Question 52

Match the following.

A)glycine
B)lysine
C)alanine
D)serine
E)phenylalanine
F)aspartic acid

Question 53

Match the following.

A)glycine
B)lysine
C)alanine
D)serine
E)phenylalanine
F)aspartic acid

Question 54

Match the following.

A)glycine
B)lysine
C)alanine
D)serine
E)phenylalanine
F)aspartic acid

Question 55

In the sequence Arg-Pro-Leu-Gln, which amino acid contains the C-terminal group?

A)proline
B)leucine
C)glutamine
D)arginine