Question

If secretory vesicles were eliminated, which of the following would accumulate first? Rough ER Golgi complex Smooth ER Nucleus All of the above A structure with an internal cross section showing a characteristic "9 + 2" microtubule morphology is the Mitochondrion Vacuole Golgi apparatus Flagellum A and D Which of the following protrude through the plasma membrane? Proteoglyeans Collagens Fibronectin Intergrins Laminins Which of the following move across microtubules? Actin Myosin Kinesin Dynein C and D Nerve impulses travel along the neurons by the opening of channels that allow sodium ions to flow inward, followed by an outward flow of potassium ions. In order to ensure that the impulse may be produced at any time, sodium is actively transported out of the cell, and potassium is transported into the cell by the sodium, potassium pump. Which of the following types of work is performed by the sodium/potassium pump? Mechanical Electrical Electrochemical Synthetic Bioluminescent

Answer 1

15. The secretory vesicles are formed from Golgi apparatus. These vesicles carry the proteins from golgi complex to cell surface. Therefore, if secretory vesicles are absent, Golgi complex is accumulated first. Option B is correct.

16. The flagellum, in cross section exhibits the 9 + 2 microtubule arrangement. Option D is correct.

17. Proteoglycans fibrous proteins found within connective tissue. Collagen is also found in connective tissue. Laminin is a protein found in basal lamina and epithelia. Fibronectin is also protein found in connective tissue. Integrins are transmembrane proteins that have $\alpha$ helices and $\beta$ structures that span through the membrane. Option D is correct.

18. Kinesin and dyenin are motor proteins that can move along the microtubules. Actin and myosin are found in muscle cells. Option E is correct.

19. The movement of sodium ions to outside of cell and potassium ions inside the cell by Sodium - Potassium ATPase is to perform the elctrochemical work inorder maintain the ion equilibrium. Option C is correct.