1. Rosalind Franklin obtained X-ray diffraction patterns of crystalline B-form D

Question

1. Rosalind Franklin obtained X-ray diffraction patterns of crystalline B-form DNA, which is essential for Watson and Crick to discover the DNA structure. A) True B) False 2. Proteins destined for the secretory pathway are packaged into vesicles that pinch off from the membrane of the ER and fuse with the A) cis face of the Golgi apparatus. B) trans 3. Akt is also called protein kinase B or PKB and promotes programmed cell death called apoptosis. A) True B) False 4. The activated phospholipase C hydrolyzes a membrane inositol phospholipid into two small messenger molecules: Diacylglycerol and Inositol 1,4,5-trisphosphate (IP3). A) True B) False 5. The gascan cross the plasma membrane and activate the guanylyl cyclase directly. A) NO B) CO 6. When NADH is converted to NAD+, each NADH donates two electrons to the NADH dehydrogenase complex in mitochondria. A) True B) False 7. Nearly all of the oxygen that we breathe is converted to water at the cytochrome b-c1 complexes. A) True B) False 8. The electrochemical gradient of H+ across the inner mitochondrial membrane, which is used for ATP production, is mainly contributed by the H+ concentration gradient (ApH) compared to a relatively smaller force driven by membrane potential (AV). A) True B) False 9. Proton gradient serves as an energy store and is used to drive the synthesis of ATP by the ATP synthase. A) True B) False 10. The double membrane of the nuclear envelope is penetrated by nuclear pore complexes (NPCs) A) True B) False 11. In the cytosol, RanGAP1 (Ran GTPase-activating protein) stimulate Ran GTPase to hydrolyze it bound GTP to GDP A) True B) False 12. Receptor tyrosine kinases (RTKs) phosphorylate selected target proteins on threonine, thereby altering protein activity A) True B) False

Explanation / Answer

Answeres

Question 1 : (a) The answer is true.

Question 2 : (a) Proteins destined to the secrectory pathway are packaged into vesicles that pinch off from the membrane of the ER and fuse with the cis face of the golgi appratus.

Question 3 : (a) The answer is true.

Question 4 : (a) The answer is true.

Question 5 : (a) The gas NO can cross the placenta membrane and activate the gaunylyl cyclase directly.

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