CELL BIO: Please answer as many as you can. I need them to be them 100% correct.

Question

CELL BIO: Please answer as many as you can. I need them to be them 100% correct. if you are at all unsure, please skip it. i dont need an explanation. thank you

7. which of the following is true regarding the Endoplasmic Reticuium 67. a. The ER contains its own DNA Any protein destined to leave the cell must enter into the ER c. Proteins to be delivered into the ER are synthesized on smooth ER d. There are several separate ERs in the cell 68. What is the role of the nuclear localization sequence in a nuclear protein? a. It prevents the protein from diffusing out of the nucleus thr b. It is bound by nuclear receptor direct the c. It is a hydrophobic nuclear pores or proteins that direct the nuclear protein to the nuclear pore sequence that enables the protein to enter the nuclear membranes It alds in protein unfolding so that the protein can thread through nuclear pores a. is cleaved after protein synthesis is complete 69. ER signal sequence b. Binds to signal recognition particle in the cytoplasm c. Binds to translocation channel in ER membrane d. All of the abave 70. Which of the following ing proteins curves the membrane to form a bud during vesicle formation? t a. Clathrin b. Dynamin c. d. Rab 71. What is the function of v-SNAREs and t-SNAREST a. b. c. d. e. They ensure that vesicles fuse with the correct membrane They ensure that the correct cargo gets incorporated into vesicles They cause membrane fusion to accur Ail of the above A&c; 72. If you remove the lysosomal signal sequence from a protein that normally resides in the lyso predict the protein will ultimately end up? c. In the Golgi a. b. In the cytoplasm In the ER d. In the extracellular matrix c. Phagocytosis d. All af the above . 73. Which of the following mechanisms would be used by an amoeba to engulf a smaller ceil? a. Receptor-mediated endocytosis b. Pinocytosis 74, Which of the following statements about the unfolded protein response (UPR) is true? The UPR becomes activated in response to an accumulation of misfolded proteins in the ER a. b. in response to the UPR, the cell produces more chaperone proteins in response to the UPR, the cell produces more ER membranes c. d. All of the above 75. Which of the following statements regarding lysosomes is false? a. b. c. d. Lysosomes can digest warn out organelles by a process called autophagy Lysosomes fuse with endosomes to digest material entering the cell by endocytosis Lysosomal membranes contain H+ pumps that pump Ht into the lysosome Lysosomes digest cytosolic proteins that are old or warn out 76. Which of the following signaling mechanisms involves signal molecules that are found on the cell signal cell? a. Paracrine signaling b. Neuronal signaling c. Endocrine signaling d. Contact-dependent sig 77. in the process of cell communication, what determines whether a particular cell is a target cell? a. if the signal cel contains a receptor b. If the signal molecule can diffuse into the cell c. If the potential target cell contains a receptor for the specific signal molecule d. If the signal molecule is soluble or insoluble

Explanation / Answer

67 = B 86 = QUESTION GETS CUT BY SIDE

68 = C 87 = B

69 = D 88 = D

70 = A   

71 = E

72 = D

73 = C

74 = B

75 = C

76 = D

77 = C

78 = D

79 = unclear

80 = D

81 = E

82 = D

83 = C

84 = C

85 = B

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