Biology CH4 Main Concepts
True
True or False? A Transmission Electron Microscope is used to study the details of internal cell structure.
True
True or False? A flagellum, longer than cilia, propels a cell by an undulating, whiplike motion.
False
True or False? A network of non connected sacs is called thylakoids.
False
True or False? A peroxisome is a membranous sac containing digestive enzymes.
True
True or False? A plant cell, but not an animal cell, has a rigid cell wall.
True
True or False? A thick fluid called cytoplasm contains the chloroplast DNA, ribosomes, and many enzymes.
True
True or False? All cells have ribosomes.
False
True or False? All of the membranes within a eukaryotic cell are part of the endomembrane system.
False
True or False? All ribosomes are free ribosomes.
True
True or False? Anchoring junctions fasten cells together into sheets.
False
True or False? Animal cells have a rigid cell wall, chloroplasts, and a central vacuole.
False
True or False? Animal sperm have cilla.
True
True or False? Both flagella and cilia are made of microtubules wrapped in an extension of the plasma membrane.
False
True or False? Both sides of the Golgi apparatus function as a receiving dock for the product.
True
True or False? Bound ribosomes are attached to the endoplasmic reticulum (ER) associated with the nuclear envelope and associated with proteins packed in certain organelles or exported from the cell.
False
True or False? Bound ribosomes are typically involved in making proteins that function within the cytoplasm.
True
True or False? Cells that must synthesize large amounts of protein have a large number of ribosomes.
False
True or False? Cells that sweep mucus out of our lungs have flagella.
False
True or False? Cellular Respiration is the conversion of light energy from the sun to the chemical energy of sugar molecules.
True
True or False? Cellular metabolism occurs within organelles.
True
True or False? Cellular respiration converts the chemical energy in foods to chemical energy in ATP (adenosine triphosphate).
True
True or False? Chloroplasts are the photosynthesizing organelles of all photosynthesizing eukaryotes.
False
True or False? Cilia, unlike flagella, moves by bending motor proteins called dynein feet.
True
True or False? DNA is coiled into a region called a nucleiod
False
True or False? DNA is not associated with chromosomes.
True
True or False? Eukaryotic cell structures can be grouped on the basis of four functions: genetic control, manufacturing, distribution, and breakdown, energy processing, and structural support, movement, and communication between cells.
True
True or False? Eukaryotic cells have a membrane enclosed nucleus.
False
True or False? Eukaryotic cells may have longer projections called flagella that may propel the cell through its liquid environment.
True
True or False? Extracellular matrix (ECM) helps hold cells together in tissues and protects and supports the plasma membrane.
False
True or False? Flagella and cilia have a very different structure and mechanism of movement.
True
True or False? Free ribosomes are suspended in the cytoplasm.
False
True or False? Gap junctions are channels that prevent molecules from flowing between cells.
True
True or False? In some regions, thylakoids are stacked like poker chips. Each stack is called a granum,where green chlorophyll molecules trap solar energy.
True
True or False? Intermediate filaments reinforce cell shape and anchor organelles.
False
True or False? Large cells have more surface area than small cells, and have more surface area to volume ratio than small cells.
True
True or False? Light Microscopes pass light through a specimen and through glass lenses.
False
True or False? Lysosomes also help remove or recycle the over-powering parts of a cell.
True
True or False? Lysosomes and centrioles are not found in plant cells.
False
True or False? Magnification and Resolution are pretty much the same thing.
False
True or False? Magnification is a measure of the clarity of an image.
False
True or False? Microtubules (actin filaments) support the cell's shape and are involved in motility.
True
True or False? Microtubules (made of tubulin) give the cell rigidity and act as tracks for organelle movement.
False
True or False? Mitochondria are organelles that carry out photosynthesis in nearly all eukaryotic cells.
True
True or False? Mitochondria in all cells and chloroplasts in plant cells are involved in energy processing.
True
True or False? My dog is perfect in every way:) (hint: true)
False
True or False? Not all cells have one or more chromosomes that they pass down to further generations of off spring.
False
True or False? Nuclear and cellular membranes have DNA and ribosomes.
False
True or False? Organs contain a network of protein fibers, called the cytoskeleton, which functions in structural support and motility.
True
True or False? Phospholipid molecules are the main components of biological membranes
False
True or False? Plant cells have cell junctions called plasma that serve in communication between cells.
True
True or False? Products are modified as they go from one side of the Golgi apparatus to the other and travel in vesicles to other sites.
True
True or False? Products travel in transport vesicles from the ER to the Golgi apparatus.
False
True or False? Prokaryotic cells are more complex than eukaryotic cells
False
True or False? Prokaryotic cells have only a few real organelles
True
True or False? Prokaryotic cells may have a complex cell wall
True
True or False? Prokaryotic cells may have short projections that help attach to other cells or the substrate
False
True or False? Prokaryotic cells never have a capsule surrounding the cell wall
True
True or False? Rough ER makes additional membrane for itself and proteins destined for secretions.
False
True or False? Rough ER produces enzymes important in the synthesis of lipids, oils, phospholipids, and steroids.
True
True or False? Scanning Microscopes show the outside/surface of images.
True
True or False? Smooth and rough ER differ in structure and function.
True
True or False? Some protists have contractile vacuoles that help to eliminate water from the protist.
False
True or False? Structural support, movement, and communication between cells are functions of the Golgi Apparatus.
False
True or False? The cell membrane is involved in the cell's protein synthesis.
True
True or False? The damaged organelle is first enclosed in a membrane vesicle. Then a lysosome fuses with the vesicle, dismantles its contents, and breaks down the damaged organelle.
True
True or False? The endomembrane system includes the nuclear envelope, endoplasmic reticulum (ER), Golgi apparatus, lysosomes, vacuoles, and the plasma membrane.
False
True or False? The endoplasmic reticulum, membrane, lysosomes, vacuoles, and ribosomes are involved in the manufacture, distribution, and breakdown of molecules.
True
True or False? The endosymbiont theory proposes that mitochondria and chloroplasts were formerly small prokaryotes and they began living within larger cells.
True
True or False? The enzymes and membrane are produced by the ER and transferred to the Golgi apparatus for processing.
False
True or False? The interior of all cells is called chromoplasm
False
True or False? The mitochondrial helix contains the mitochondrial DNA, ribosomes, and many enzymes that catalyze some of the reactions of cellular respiration.
False
True or False? The mitochondrion's are attached to a network of cellular membranes called the endoplasmic reticulum.
True
True or False? The nuclear envelope is a double membrane
True
True or False? The nucleolus is a prominent structure in the nucleus and the site of ribosomal RNA (rRNA) synthesis.
True
True or False? The nucleus and ribosomes are involved in the genetic control of the cell.
True
True or False? The nucleus contains most of the cell's DNA and controls the cell's activities by directing protein synthesis by making messenger RNA (mRNA).
False
True or False? The nucleus serves as a molecular warehouse and finishing factory for products manufactured by the ER.
False
True or False? The ribosomes serve to safely isolate these potent enzymes from the rest of the cell.
False
True or False? The two parts of cell theory are 1. All living things are made of cells and 2. Cells cannot reproduce
False
True or False? There are three kinds of endoplasmic reticulum—smooth, rough and membraneous.
True
True or False? There are three kinds of fibers in the cytoskeleton: microfilaments, intermediate filaments, and microtubules.
False
True or False? There is no limit to how big or small a cell membrane can be, the cell will work the same regardless.
False
True or False? Tight junctions can cause leakage of extracellular fluid across a layer of epithelial cells.
False
True or False? Vacuoles are large vesicles that have only one function.
False
True or False? Very few of the organelles and other structures of animals cells are present in plant cells.
True
True or false? Lysosomes help digest food particles engulfed by a cell.
