Questions:

Q1. If a person dies from ruptured aorta and is found to have a history of such deaths in family. The gene for what protein is likely to be mutated in this patient?

1. fibronectin
2. heparin
3. proteoglycan aggregate
4. fibrillin

Q2. When a benign adenoma becomes a metastatic adenocarcinoma, which group of molecules are almost certainly degraded by the tumor cells?

1. collagen type I, II and III
2. fibronectin and b2 integrins
3. type IV collagen and laminin
4. elastin, type IX collagen, and selectins

Q3. Chromosomes are duplicated during which phase of the cell cycle?

1. G1 phase
2. G2 phase
3. S phase
4. metaphase
5. prophase

Q4. If a cell is in G2 then-------

1. it has twice the amount of DNA present in a telophase nucleus.
2. it has visibly distinct chromosomes.
3. it lacks a visible nuclear membrane.
4. it is in mitosis.
5. it is in cytokinesis.

Q5. The ____________ is responsible for the separation of the chromosomes during

____________ of mitosis.

1. cell wall; anaphase
2. flagellum; metaphase
3. mitotic spindle; anaphase
4. kinetochore; prophase
5. centromere; telophase

Q6. The ____ surrounds the cell like a belt, preventing the passage of substances between the cells.

1. gap junction
2. desmosome
3. hemidesmosome
4. tight junction