Exam 3: The Macromolecules of the Cell

A) its only found in the L form,which is incompatible with helical protein structure.
B) it lacks the hydrogen atom needed for hydrogen bonding.
C) it lacks a charged functional groups for ionic bonding.
D) it is hydrophobic.
E) it has a polar functional group.

Correct Answer

verified

Show Answer

Correct Answer

verified

Show Answer

Correct Answer

verified

Show Answer

A) Glycolipids are usually found on the exterior surface of the plasma membrane.
B) Glycolipids are found in plastids and are used to store energy.
C) Fructose and sucrose are often part of glycolipids.
D) Glycolipids contain steroids.
E) Usually more than 10 sugar units are attached to the glycolipid.

Correct Answer

verified

Show Answer

A) primary
B) secondary
C) tertiary
D) primary,secondary,and tertiary
E) None of these structures involve disulfide bonds.

Correct Answer

verified

C

A) Fibrous proteins usually contain a number of different domains with different structural motifs.
B) Fibrous proteins are composed of an equal mixture of α helices and β sheets with interconnecting looped segments.
C) Fibrous proteins have an extensive tertiary and quaternary structure that affects the strength and elasticity of each fiber.
D) Fibrous proteins have a simple primary structure and very little secondary structure,resulting in long,thin fibers.
E) Fibrous proteins are usually composed of either α helices or β sheets throughout the molecule,giving them a highly ordered,repetitive structure.

Correct Answer

verified

Show Answer

A) testosterone
B) vitamin A
C) glycerol
D) estrogen
E) chitin

Correct Answer

verified

B

A) The two proteins may have different secondary structures.
B) Protein A is fibrous and Protein B is globular.
C) Protein A may be a cytoplasmic protein and Protein B may be a membrane associate protein.
D) Protein A and Protein B are complementary parts of a supramolecular structure.
E) Protein A is most likely and enzyme and Protein B is most likely a storage protein.

Correct Answer

verified

Show Answer

A) a carboxyl group,an amine group,and a variable R group.
B) a five-carbon sugar,a phosphate group,and a nitrogen-containing aromatic base.
C) a three-carbon alcohol with a hydroxyl group on each carbon and three fatty acids.
D) two six-carbon sugars attached with an α(1→4) glycosidic bond.
E) a six-carbon sugar,an ester linkage,and a four-ringed hydrocarbon.

Correct Answer

verified

Show Answer

Correct Answer

verified

Fibrous proteins such as (silk,collagen,...

View Answer

Show Answer

A) phosphate
B) covalent
C) phosphodiester
D) peptide
E) phosphatidyl

Correct Answer

verified

Show Answer

A) testosterone
B) estradiol
C) cortisol
D) aldosterone
E) phenylalanine

Correct Answer

verified

Show Answer

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

Correct Answer

verified

Show Answer

Correct Answer

verified

5: polar,charged or uncharged (hydrophil...

View Answer

Show Answer

Correct Answer

verified

Amylose: is produced by plants and is a ...

View Answer

Show Answer

A) steroids
B) terpenes
C) fatty acids
D) triacylglycerols
E) pectins

Correct Answer

verified

Show Answer

A) The primary structure of the protein contains multiple cysteine residues that are hydrolyzed by the chemical reductant.
B) The protein is most likely composed of multiple polypeptide chains that are held together by disulfide bonds.
C) The protein is most likely composed of α helices that are held together by disulfide bonds.
D) The protein is most likely composed of β sheets that are held together by disulfide bonds.
E) The primary and secondary structure of the protein depends on disulfide bonds.

Correct Answer

verified

Show Answer

A) hereditary proteins
B) enzymes
C) motility proteins
D) regulatory proteins
E) structural proteins

Correct Answer

verified

A