28. Where does protein synthesis take place? A) in the nucleolus B) on smooth endoplasmic reticulum C) on ribosomes D) in the nucleus E) in the Golgi apparatus 29. A cell you view under a microscope has a cell wall and chromosomes but no nucleus. The cell you are viewing could be a a) human muscle cell. b) cell from the leaf of a maple tree. c) bacterium recovered from the large intestine of a mammal. d) cell from the skin of a potato 30. Which of the following cell structures is (are) found in both animal and plant cells? A) mitochondria B) chloroplasts C) centrioles D) large central vacuole E) cell wall Based on its function in detoxifying drugs, you would expect to find a large amount of smooth endoplasmic reticulum ER in______ cells. A) brain B) lung C) liver D) intestinal E) muscle 31. Instructions: Complete the table below with either the organelle performing the stated function, or the function performed by the organelle listed: Organelle | Function --- | --- | Synthesis of components of the ribosome | Digests worn out organelles and cells Microtubules | Golgi Apparatus | | Synthesis of proteins used inside a cell Mitochondria | Vacuole | Cilia |
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a. DNA b. proteins c. nucleus d. nucleolus e. modify f. digestion g. cellulose h. channels i. vacuoles j. mitochondria k. microtubules 1. rough ER m. smooth ER n. solar energy o. protein fibers p. large vacuole q. Golgi apparatus I. microfilaments s. intermediate filaments t. endomembrane system The (1) is the cell's genetic control center. The nucleus houses the cell's (2) and directs protein synthesis by making messenger RNA. The (3) makes the subunits of ribosomes. Ribosomes synthesize (4) according to the directions from DNA. Many organelles are connected through the (5) (6) synthesizes lipids and processes toxins. (7) manufactures membranes and ribosomes on its surface, produce membranes and secretory proteins. The (8) consists of stacks of sacs that (9) - ER products and then ship them to other organelles or to the cell surface. Lysosomes house enzymes that function in (10) and recycling within the cell. Plant cells contain a (11) that stores molecules ad wastes and facilitates growth. While animal cells have small and numerous (12) that function in the general maintenance of the cell. The organelles of the endomembrane system are interconnected structurally and functionally. (13) is the main organelle in animal cell responsible in harvesting chemical energy from food while chloroplasts in plant convert (14) to chemical energy. The cell's internal skeleton helps organize its structure and activities. The cytoskeleton is a network of (15) (16) of actin enable cells to change shape and move. (17) reinforce the cell and anchor certain organelles. (18) give the cell rigidity and acts as tracks for organelle movement. Plant cell walls are made largely of (19) Plasmodesmata are connecting (20) between plant cells.
Sri K.
In a eukaryotic cell, what would be the location of protein synthesis for: Protein found in the matrix of mitochondria? A. Free Ribosomes in the Cytosol B. Surface of the ER C. Either of these D. None of these 2. In a eukaryotic cell, what would be the location of protein synthesis for: Nuclease in the lysosome? A. Free Ribosomes in the Cytosol B. Surface of the ER C. Either of these D. None of these 3. Place the following events involved in signal hypothesis in the correct sequence: A. Ribosome finishes/terminates translation on the RER B. SRP binds to the signal sequence C. mRNA leaves the nucleus D. Growing polypeptide chain enters the lumen of the RER E. SRP-Ribosome-mRNA binds to the SRP Receptor on the RER F. Ribosome begins the process of translation
Suman K.
Where are the RNA components of ribosomes synthesized? a. cytoplasm b. endoplasmic reticulum c. nucleus d. nucleolus
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