Cell and molecular BIO Multiple choice Answer ALL 31. A fibroblast can attach in

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Cell and molecular BIO Multiple choice Answer ALL 31. A fibroblast can attach indirectly to collagen via which type of"linker" protein? (a) proteoglycan pectin (c) cadherin (d) fibronectin (e) integrin 32. Proteoglycans in the extracellular matrix of animal tissues chiefly (a) provide tensile strength b) allow cartilage to resist compression (c) are linked to (d) are positively through the plasma membrane charged 33. Which of the following proteins joins two neighboring epithelial cells together? (a) cadh (b) fibronectin (c) integrin. (d) adhesion 34. Cells that are terminally differentiated (a) will undergo within a few days (b) can no longer undergo cell division (c) are unable to move (d) no longer produce RNAs 35. Which of the following statements is false? (a) Most tissues consist of a single type of cell bound together by an ECM. (b) Different tissues have different rates of renewal. (e) A single type of stem cell can give rise to several types of differentiated cells. (d) When a stem cell divides, the daughter cells can remain a cell or differentiate. 36. Induced pluripotent stem (iPS) cells (a) created from adult cells by the expression of a set of key genes (b) require a of donor egg cells, such as embryonic stem cells (c) can differentiate into a greater of adult tissues than embryonic stem cells (d) are created by nuclear transplantation 37. a) In most tissues, dying cells are continuously replaced. This process must be orderly to maintain the complex organization of for maintaining the organization (3-1 of the key mechanisms important of cells into tissues. three

Explanation / Answer

1. Choose option d.

Fibronectin is the protein that attahes fibroblasts indirectly to collagen.

So option d, fibronectin is correct.

2.option b is the correct answer.

Proteoglycans in extracellular matrix helps in resisting compression.

So choose option b.

3.option d is the correct answer.

Adhesion proteins binds two neighboring epithelial cells together.

So choose option d.

4.option b is the correct answer.

Terminally differentiated cells can no longer undergo cell division.

5.option a is the correct answer.

This statement is false.

6.option a is the correct answer.

Thank you

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