Biology Chapters 6 & 7- CellsLarge numbers of ribosomes are present in cells that specialize in producing which of these? Which organelle is primarily inn in synthesis of oils, phospholipids, and steroids? Which organelle is involved in a disease that results in cells becoming clogged with lipids? A plant or animal cell. It could be a cell from
Biology Chapters 6 & 7- Cells Flashcards | Quizlet
B a cell wall. C a plasma membrane. E an endoplasmic reticulum. Which of the following is a major cause of the size limits for certain types of cells?
Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and steroids? A ribosome B lysosome C smooth endoplasmic reticulum D mitochondrion E contractile vacuole. Which structure is the site of the synthesis of proteins that may be exported from the cell?
The difference in lipid and protein composition between the membranes of the endomembrane system is largely determined by A the physical separation of most membranes from each other. B the transportation of membrane among the endomembrane system by small membrane vesicles. C the function of the Golgi apparatus in sorting membrane components. D the modification of the membrane components once they reach their final destination.
E the synthesis of lipids and proteins in each of the organelles of the endomembrane system. In animal cells, hydrolytic enzymes are packaged to prevent general destruction of cellular components. Which of the following organelles functions in this compartmentalization?
A chloroplast B lysosome C central vacuole D peroxisome E glyoxysome. The liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells? Which of the following produces and modifies polysaccharides that will be secreted?
Which of the following contains hydrolytic enzymes? Which of the following is a compartment that often takes up much of the volume of a plant cell? Which is one of the main energy transformers of cells? Which of the following contains its own DNA and ribosomes?
Which of the following contains enzymes that transfer hydrogen from various substrates to oxygen? Grana, thylakoids, and stroma are all components found in A vacuoles. Organelles other than the nucleus that contain DNA include A ribosomes. The chemical reactions involved in respiration are virtually identical between prokaryotic and eukaryotic cells. In eukaryotic cells, ATP is synthesized primarily on the inner membrane of the mitochondria. Where are the corresponding reactions likely to occur in prokaryotic respiration?
A in the cytoplasm B on the inner mitochondrial membrane C on the endoplasmic reticulum D on the inner plasma membrane E on the inner nuclear envelope.
A It only has two membrane layers. B Its structure is not derived from the ER. C It has too many vesicles. D It is not involved in protein synthesis.
E It is not attached to the outer nuclear envelope. Motor proteins provide for molecular motion in cells by interacting with what types of cellular structures? A sites of energy production in cellular respiration B membrane proteins C ribosomes D cytoskeletons E cellulose fibers in the cell wall. Cells can be described as having a cytoskeleton of internal structures that contribute to the shape, organization, and movement of the cell. Which of the following are part of the cytoskeleton?
A the nuclear envelope B mitochondria C microfilaments D lysosomes E nucleoli. The differences among the three categories of cytoskeletal elements would suggest that each of the following has specialized roles. Which of the following is a correct match? A microfilaments and the nuclear lamina B microtubules and cleavage furrow formation C microfilaments and ciliary motion D intermediate filaments and cytoplasmic streaming E microtubules and chromosome movement.
Which of the following possesses a microtubular structure similar to a basal body? A centriole B lysosome C nucleolus D peroxisome E ribosome. Microfilaments are well known for their role in which of the following? Which of the following statements about the cytoskeleton is true? A The dynamic aspect of cytoskeletal function is made possible by the assembly and disassembly of a large number of complex proteins into larger aggregates.
B Microfilaments are structurally rigid and resist compression, while microtubules resist tension stretching. C Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other.
Cells require which of the following to form cilia or flagella? All of the following serve an important role in determining or maintaining the structure of plant cells. Which of the following are distinct from the others in their composition? A microtubules B microfilaments C plant cell walls D intermediate filaments E nuclear lamina. Which of the following correctly describes the order in which these structures will be encountered by the ion?
Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells? A peroxisomes B desmosomes C gap junctions D extracellular matrix E tight junctions. Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through A plasmodesmata.
A fibronectin B proteoglycans C integrins D collagen E middle lamella. Which statement correctly characterizes bound ribosomes?
A Bound ribosomes are enclosed in their own membrane. B Bound and free ribosomes are structurally different. C Bound ribosomes generally synthesize membrane proteins and secretory proteins.
D The most common location for bound ribosomes is the cytoplasmic surface of the plasma membrane. E All of the above. Which structure is not part of the endomembrane system? Which structure-function pair is mismatched? A nucleolus; production of ribosomal subunits B lysosome; intracellular digestion C ribosome; protein synthesis D Golgi; protein trafficking E microtubule; muscle contraction. Which of the following types of molecules are the major structural components of the cell membrane?
A phospholipids and cellulose B nucleic acids and proteins C phospholipids and proteins D proteins and cellulose E glycoproteins and cholesterol. The presence of cholesterol in the plasma membranes of some animals A enables the membrane to stay fluid more easily when cell temperature drops.
B enables the animal to remove hydrogen atoms from saturated phospholipids. C enables the animal to add hydrogen atoms to unsaturated phospholipids.
D makes the membrane less flexible, allowing it to sustain greater pressure from within the cell. E makes the animal more susceptible to circulatory disorders. According to the fluid mosaic model of cell membranes, which of the following is a true statement about membrane phospholipids?
A They can move laterally along the plane of the membrane. B They frequently flip-flop from one side of the membrane to the other. C They occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane. D They are free to depart from the membrane and dissolve in the surrounding solution. E They have hydrophilic tails in the interior of the membrane. Which of the following is one of the ways that the membranes of winter wheat are able to remain fluid when it is extremely cold?
A by increasing the percentage of unsaturated phospholipids in the membrane B by increasing the percentage of cholesterol molecules in the membrane C by decreasing the number of hydrophobic proteins in the membrane D by co-transport of glucose and hydrogen E by using active transport.