Protein Structure

Question: 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: Option D

Explanation:

No answer description available for this question.

Question: 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: Option D

Explanation:

No answer description available for this question.

Question: Cyclins are proteins that
[A].

regulate ability of cells to invade tissue

[B].

regulate passage from one stage of cell division to another

[C].

regulate apoptosis of damaged cells

[D].

none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Question: Over 50% of common cancers are associated with damage to a protein, p53. This protein
[A].

is a cyclin

[B].

is a tumor supressor

[C].

is an oncogene

[D].

regulates apoptosis

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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: Option B

Explanation:

No answer description available for this question.

Question: 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: Option A

Explanation:

No answer description available for this question.

Question: Beta pleated sheets are examples of protein’s
[A].

primary structure

[B].

secondary structure

[C].

tertiary structure

[D].

quaternary structure

Answer: Option B

Explanation:

No answer description available for this question.