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SCI 220 WEEK 3 QUIZ

NIGHTINGALE SCI220 ANATOMY WEEK 3 QUIZ

QuestionAnswer
Lysosomes perform autophagy. This means that they: break down proteins and cytoplasm that are not needed by “self eating.” are the protein-destroying organelle in the cell. synthesize ATP. provide an internal supporting framework. break down proteins and cytoplasm that are not needed by “self eating.”
The structure that separates the contents of a cell from the surrounding tissue is known as: Golgi apparatus. plasma membrane. cytoplasm. centrosome. plasma membrane
Which cell fiber serves as part of our “cellular muscles?” Centrosome Microfilament Microtubule Intermediate filament microfilament
DNA is a major constituent of which cell organelle? Lysosome Ribosome Chromosome Nucleus nucleus
How do vesicles move from place to place in an organized way within the cell? Molecular motors pull them along the microtubules and microfilaments of the cytoskeleton Vaults pull them along the microtubules and microfilaments of the cytoskeleton. Molecular motors pull them along the microtubules and microfilaments of the cytoskeleton
Which of the following is not a function of the smooth endoplasmic reticulum? Provides a site for ribosome attachment Supplies membrane for use throughout the cell Makes steroid hormones Makes glycoproteins Provides a site for ribosome attachment
The nucleus is the only structure in the cell that contains DNA. False True False
Projections from the cell that move materials and mucus are called: cilia. flagella. microvilli. microtubules. cilia
Which of the following organelles is considered a nonmembranous organelle? Golgi apparatus Ribosome Mitochondria Both A and B Ribosome
The inner membrane of what double-membrane structure is contorted into folds called cristae? Golgi apparatus Mitochondrion Endoplasmic reticulum Ribosome Mitochondrion
Which of the following does not describe a structure or function of the proteasome? Breaking down abnormal and misfolded proteins released from the ER Looks like a hollow cylindrical drum made of protein subunits Requires the small protein call All of the above are structures or functions of proteasomes.
Which of the following recognize and destroy nonself cells? Gland cells Immune cells Nerve cells Red blood cells Immune cells
Which of the following is not a function of the integral membrane proteins? Acting as receptors Signal transduction Identification of “self” All of the above are functions of the integral membrane proteins. All of the above are functions of the integral membrane proteins.
Damage to the centrosome and centrioles in a cell would have the greatest impact on which cell function? Energy production Protein synthesis Cell division Synthesis of lipids and carbohydrates Cell division
Which organelle processes and packages material to be secreted? Nucleolus Ribosome Mitochondrion Golgi apparatus Golgi apparatus
A specialized cell structure that propels the sperm is the: flagellum. cilium. microvillus. microtubule. flagellum
Which organelles consist of vesicles that have pinched off from the Golgi apparatus? Mitochondria Cilia Peroxisomes Lysosomes Lysosomes
The cell extension that assists epithelial cells in absorption is called: cilia. flagella. microvilli. desmosomes. microvilli
The ____ is often called the microtubule organizing center. centrosome cytoskeleton centriole ribosome centrosome
Main cell structures include all of the following except: organelles. plasma membrane. interstitial fluid. cytoplasm. interstitial fluid.
The cell extension that contains microfilaments is called: microvilli. flagella. cilia. All cell extensions contain microfilaments. microvilli
Which of the following is not true about ribosomes? Contain protein Composed of a large unit and a small unit Surrounded by a membrane structure Contain RNA Surrounded by a membrane structure
Skin cells (epithelial) are held tightly together by: gap junctions. desmosomes. tight junctions. adhesions desmosomes
In the cell membrane, the hydrophilic part of the phospholipid molecule: faces the exterior of the cell. faces the interior of the cell. is in the center of the phospholipid bilayer. both A and B. faces the exterior of the cell. faces the interior of the cell. both A and B.
The fundamental organizational unit of life is the: atom. cell. gene. DNA molecule. cell
The nucleolus is composed chiefly of: mRNA. rRNA. tRNA. DNA. rRNA
The presence of which substance in the cell membrane keeps it from breaking too easily? Cholesterol Protein Phospholipids Glycoproteins Cholesterol
A list of the cell fibers from largest to smallest would read: microtubules, intermediate filaments, microfilaments. microtubules, microfilaments, intermediate filaments. microfilaments, intermediate filaments, microtubules. microfilaments, microtubules, intermediate filaments, microfilaments.
The structure in cells that is associated with the enzymatic breakdown (digestion) of foreign material is the: lysosome. Golgi apparatus. ribosome. centriole. lysosome
The barrier function of the plasma membrane is accomplished by the: receptor proteins. glycoproteins. rafts in the cell membrane. phospholipid bilayer. phospholipid bilayer
Created by: majomajo
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