Protein Structure

Marfan's syndrome is thought to be a mutation affecting

A:

hemoglobin synthesis

B:

collagen synthesis

C:

metabolism of homogentisic acid

D:

insufficient thyroid production

Answer: B

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Individuals with PKU disease are mentally retarded unless

A:

phenylalanine in the diet is restricted

B:

tyrosine in the diet is restricted

C:

homogentisic acid in the diet is restricted

D:

none of the above

Answer: A

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Signal sequences are part of a protein that

A:

signal folding of the protein

B:

signal the protein synthesis on the ribosomes is ended

C:

transport proteins to other sites within the cell

D:

refold proteins in prion-associated diseases

Answer: C

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Metastasis involves

A:

ability of cells to dissolve cellular matrix

B:

metalloprotein levels

C:

decreased levels of proteins that regulate metalloproteins

D:

all of the above

Answer: D

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BRACl, an inherited form of breast cancer, regulates cell division by

A:

binding to a DNA sequence

B:

complexing with cyclins

C:

binding to the cell outer membrane

D:

binding to the protein RAD 51 which repairs DNA damage

Answer: D

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Questions for: Protein Structure