1- The plasma membrane performs all of the following functions except a. regulating flow of materials into and out of the cell b. facilitating protein synthesis c. providing a barrier d. facilitating communication with other cells 2- Where do most of the metabolic activities take place within the cell? a. Cytoskeleton b. Cytoplasm c. Endoplasmic reticulum d. Golgi apparatus 3- What would happen if a cell stopped making properly functioning R N A? a. Nothing. The cell would function properly. b. The cell would not be able to translate the information in protein into D N A. c. The cell would not be able to translate the information in D N A into protein. d. The cell would not be able to translate the information in D N A into lipids. 4- If a cell had a nucleoid, it most likely would be a(n) a. animal cell b. plant cell c. fungal cell d. bacterial cell 5- Which is NOT an organelle of animal cells? a. Plastid b. Mitochondrion c. Endoplasmic reticulum d. Golgi apparatus 6- If an organism has cilia, most likely it is a. a plant b. an animal c. living in a dry environment d. living in a watery environment
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Step 1: The plasma membrane performs all of the following functions except regulating the flow of materials into and out of the cell, facilitating protein synthesis, providing a barrier, and facilitating communication with other cells. Show more…
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The plasma membrane is involved in which of the following functions, EXCEPT? Cell communication Import and export of molecules Cell growth and motility Structural protection
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Which of the following statements are correct? Explain your answers. A. Ribosomes are cytoplasmic structures that, during protein synthesis, become linked by an mRNA molecule to form polyribosomes. B. The amino acid sequence Leu-His-Arg-Leu-Asp-Ala-GlnSer-Lys-Leu-Ser-Ser is a signal sequence that directs proteins to the ER. C. All transport vesicles in the cell must have a v-SNARE protein in their membrane. D. Transport vesicles deliver proteins and lipids to the cell surface. E. If the delivery of prospective lysosomal proteins from the trans Golgi network to the late endosomes were blocked, lysosomal proteins would be secreted by the constitutive secretion pathways shown in Figure $15-30$ F. Lysosomes digest only substances that have been taken up by cells by endocytosis. G. $N$ -linked sugar chains are found on glycoproteins that face the cell surface, as well as on glycoproteins that face the lumen of the ER, trans Golgi network, and mitochondria.
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