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Cell Bio 3201, SPRING 2018 Figure Q4-38 4-39 Indicate whether the following stat

ID: 202038 • Letter: C

Question

Cell Bio 3201, SPRING 2018 Figure Q4-38 4-39 Indicate whether the following statements are true or false. If a statement is false, explain why it is false. A. Collagen is a protein that participates in both the cytoskeleton and the B. Collagen fibers and elastin fibers serve similar functions, which is expected C. The assembly of both collagen and elastin fibers requires the formation of extracellular matrix. because the structure of these two types of fibers is quite similar. disulfide bonds. ased ain) 4-40 For each of the following, indicate whether the individual folded polypeptide chain forms a globular (G) or fibrous (F) protein molecule. A. keratin B. lysozyme C. elastin D. collagen E. hemoglobin F. actin 4-41 Globular proteins fold up into compact, spherical structures that have uneven surfaces. They tend to form multisubunit complexes, which also have a rounded shape. Fibrous proteins, in contrast, span relatively large distances within the cell and in the extracellular space. Which of the proteins below is not classified as a fibrous protein? (a) elastase (b) collagen (c) keratin (d) elastin 4-42 Which of the following globular proteins is used to form filaments as an intermediate step to assembly into hollow tubes? (a) tubulin (b) actin (c) keratin (d) collagen 4-43 You have two purified samples of protein Y: the wild-ype (nonmutated) protein and a utant version with a single amino acid substitution. When washed through the same gel- Page 11 of 20

Explanation / Answer

Answer:

39) Indicate whether the following statement are true or false?

40) For each of the following, indicate whether the individual folded polypeptide chain forms a globular (G) or fibrous (F) protein molecule.

A) Keratin - Fibrous (F) protein

B) Lysozyme - Globular (G) protein

C) Elastin - Fibrous (F) protein

D) Collagen - Fibrous (F) protein

E) Hemoglobin - Globular (G) protein

F) Actin - Globular (G) protein   

41) Which of the proteins below is not classified as a fibrous protein?

a) Elastase - Correct Option (Elastase is a globular protein and not a fibrous protein)

b) Collagen

c) Keratin

d) Elastin

42) Which of the following globular proteins is used to form filaments as an intermediate step to assemble into hollow tubes?

a) Tubulin - Correct Option (Tubulin protein is used to form filaments as an intermediate step to assemble into hollow tubes structure called as microtubule)

b) Actin

c) Keratin

d) Collagen

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