Which of the following choices concerning Tyrosine phosphate is true?

Which of the following choices concerning Tyrosine phosphate is true?
Help with these bio questions please.Thank you

1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response to a signal can be fast if it a) 4 A involves change in gene expression b) To make a new protein Does not involve gene expression and synthesis of a new protein d) To make new enzymes 5. Cells can communicate with one another using a) Hormones ? b) Receptors 6. Vesicle docking depends c) local mediators d) all the above on which of the following proteins a) Tethering proteins b) Chaperone proteins Enzyme coupled receptors interact with GPCR a) True 7. b) False 8. As RTK bonds to its ligand, an intracellular signaling response develops when a) Tyrosine is phosphorylated b) Tyrosine is dephosphorylated c) Threonine is phosphorylated d) Threonine is dephosphorylated GPCR in eye cause the eye to: a) Respond to light quickly b) Respond to light slowly c) Have no effect on the eye d) GPCR are not present in the eye 9. 10. Phosphatases phosphorylate molecules b) false a) True 11. Which of the following choices concerning Tyrosine phosphate is true? a) Removes phosphate from serine b) Adds phosphate to serine c) Removes phosphate from tyrosine d) Adds phosphate to tyrosine 12. Kinases: a) b) Add a phosphate to a molecule Phosphorylates molecules d) More than one is correct 13. Ca concentration in an unstimulated cell is very high