BSC 150- R.M.Estrill-Instructor

Name: ______Date:______

BSC 150- R.M.Estrill-Instructor

CHAPTER 4 TEST

/
/ The architecture of cell surfaces can be viewed in the most detail using a _____. ( Module 4.1)
/ scanning electron microscope
/ transmission electron microscope
/ light microscope
/ magnifying glass
/ microscope and fluorescent dyes
/
/
/ The term resolving power refers to _____. ( Module 4.1)
/ the apparent increase in the size of an object
/ the source of the illumination
/ the depth of focus
/ the clarity of the image in showing two objects as separate
/ the type of cell being observed
/
/
/ A normal size range for a typical eukaryotic cell is _____. ( Module 4.2)
/ 0.1 nanometers
/ 10 nanometers
/ 100 nanometers
/ 1 to 10 micrometers
/ 10 to 100 micrometers
/
/
/ The maximum size of a cell is limited by _____. ( Module 4.2)
/ its need for enough surface area to make exchanges with its environment
/ the number of organelles that can be packed inside
/ the materials needed to build it
/ the amount of flexibility it needs to be able to move
/ the amount of food it needs to survive
/
/
/ What are the limits on which maximum cell size depends? ( Module 4.2)
/ the number of organelles
/ surface-to-volume ratio
/ number of surrounding cells
/ amount of DNA in the nucleus
/ thickness of the cell membrane
/
/
/ To enter or leave any cell, substances must pass through _____. ( Module 4.2)
/ a microtubule
/ the Golgi apparatus
/ a ribosome
/ the nucleus
/ the plasma membrane
/
/
/ Which of the following structures are found in prokaryotic cells? ( Module 4.3)
/ Golgi apparatus
/ endoplasmic reticulum
/ mitochondria
/ ribosomes
/ nucleus
/
/
/ Bacterial cells are prokaryotic; unlike a typical eukaryotic cell, they _____. ( Module 4.3)
/ lack a nucleus
/ have a smaller nucleus
/ lack a plasma membrane
/ have more internal membranous compartments
/ have a greater variety of organelles
/
/
/ A certain cell has a dense nucleoid region, ribosomes, but no membrane-enclosed organelles. Based on this information, it could be _____. ( Module 4.3)
/ a cell from a pine tree
/ a grasshopper cell
/ a yeast (fungus) cell
/ an archaean
/ a Paramecium
/
/
/ Which of the following are found in prokaryotic cells? ( Module 4.3)
/ Golgi apparatuses
/ mitochondria
/ nucleoli
/ proteins
/ endomembrane systems
/
/
/ Which of the following would be found in the cytoplasm of a eukaryotic cell? ( Module 4.4)
/ DNA
/ nucleolus
/ flagella
/ extracellular matrix
/ centrioles
/
/
/ The nucleolus _____. ( Module 4.4)
/ contains the hereditary blueprint of the cell
/ modifies substances made on the endoplasmic reticulum
/ organizes the spindle fibers for cell division
/ manufactures ribosomes
/ exports substances out of the cell
/
/
/ Most of the DNA in a eukaryotic cell is in the _____. ( Module 4.4)
/ cytoskeleton
/ mitochondria
/ endomembrane system
/ cytoplasm
/ nucleus
/
/
/ A plant cell was grown in a test tube containing radioactive nucleotides, the parts from which DNA is built. Later examination of the cell showed the radioactivity to be concentrated in the _____. ( Module 4.4)
/ rough endoplasmic reticulum
/ peroxisome
/ smooth endoplasmic reticulum
/ central vacuole
/ nucleus
/
/
/ Phospholipid bilayer membranes are semipermeable. Which of the following can move across the membrane without assistance? ( Module 4.5)
/ O2
/ H+
/ glucose
/ starch
/ polar molecules
/
/
/ Under a light microscope, which substance becomes visible as the cell divides? ( Module 4.6)
/ DNA
/ protein
/ rRNA
/ mRNA
/ chromatin
/
/
/ Where are the ribosomes that produce enzymes responsible for the first steps of sugar metabolism found? ( Module 4.7)
/ smooth endoplasmic reticulum
/ Golgi apparatus
/ lysosomes
/ cytoplasm
/ rough endoplasmic reticulum
/
/
/ Digestive cells produce many enzymes that break down ingested food. These cells have a large number of ribosomes _____. ( Module 4.7)
/ on the smooth endoplasmic reticulum
/ on the Golgi apparatus
/ in the nucleus
/ in the cytoplasm
/ on the rough endoplasmic reticulum
/
/
/ Which of these is a function of the endomembrane system? ( Module 4.8)
/ cell movement
/ light energy conversion
/ control center
/ molecule export
/ cell shape
/
/
/ Of the following organelles, which group is involved in manufacturing the substances needed by the cell? ( Module 4.8)
/ lysosome, vacuole, ribosome
/ ribosome, rough endoplasmic reticulum, smooth endoplasmic reticulum
/ vacuole, rough endoplasmic reticulum, smooth endoplasmic reticulum
/ smooth endoplasmic reticulum, ribosome, vacuole
/ rough endoplasmic reticulum, lysosome, vacuole
/
/
/ The rough endoplasmic reticulum is considered to be in which general functional category of organelle? ( Module 4.9)
/ breakdown
/ energy-processing
/ manufacturing
/ support between cells
/ communication between cells
/
/
/ Which of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes? ( Module 4.9)
/ rough endoplasmic reticulum
/ smooth endoplasmic reticulum
/ lysosomes
/ microfilaments
/ mitochondria
/
/
/ In muscle cells, the _____ is/are specialized for the storage and release of calcium. ( Module 4.9)
/ mitochondria
/ smooth endoplasmic reticulum
/ the Golgi apparatus
/ contractile vacuoles
/ rough endoplasmic reticulum
/
/
/ Membrane proteins are synthesized by ribosomes that are attached to _____. ( Module 4.9)
/ the Golgi apparatus
/ mitochondria
/ the nucleolus
/ the endoplasmic reticulum
/ lysosomes
/
/
/ When isolated liver cells are combined with toxins, initial processing in the _____ increases the solubility of those compounds as an initial step in their excretion. ( Module 4.9)
/ smooth endoplasmic reticulum
/ Golgi apparatus
/ mitochondrion
/ rough endoplasmic reticulum
/ lysosome
/
/
/ You would expect a cell with an extensive Golgi apparatus to _____. ( Module 4.10)
/ make a lot of ATP
/ secrete a lot of material
/ move actively
/ perform photosynthesis
/ store large quantities of food
/
/
/ A researcher made an interesting observation about a protein made by the rough endoplasmic reticulum and eventually used to build a cell's plasma membrane. The protein in the membrane was actually slightly different from the protein made in the ER. The protein was probably altered in the _____. ( Module 4.10)
/ Golgi apparatus
/ smooth endoplasmic reticulum
/ mitochondrion
/ nucleus
/ chloroplast
/
/
/ Lysosomes are derived from _____ and function in _____. ( Module 4.11)
/ mitochondria … anaerobic respiration
/ the Golgi apparatus and rough endoplasmic reticulum … digestion of worn-out organelles
/ microtubule organizing centers … storage of ATP
/ symbiotic bacteria … extrachromosomal inheritance
/ nucleoli … aerobic respiration
/
/
/ Which of the following is the most likely consequence for a cell lacking functional lysosomes? ( Module 4.11)
/ The cell becomes crowded with undigested wastes.
/ The cell dies because its ATP-synthesizing mechanisms are missing.
/ The cell dies from a lack of enzymes to catalyze metabolic reactions.
/ The cell is unable to reproduce itself.
/ The cell is unable to grow to a mature size and always remains small.
/
/
/ The contractile vacuole _____. ( Module 4.12)
/ contains trapped bacteria to be digested by the lysosomes
/ contains the cell sap
/ eliminates excess water from the cytoplasm of freshwater protists
/ converts light energy to chemical energy
/ converts light energy to physical energy
/
/
/ Peroxisomes are organelles that are involved in the _____. ( Module 4.13)
/ breakdown of fatty acids
/ generation of energy
/ production of ribosomes
/ synthesis of lipids
/ catabolism of sugar
/
/
/ What are the inner folds of the mitochondria called? ( Module 4.14)
/ cristae
/ matrix
/ stroma
/ grana
/ tubules
/
/
/ The purpose of cellular respiration is the production of _____. ( Module 4.14)
/ ATP
/ oxygen
/ carbon dioxide
/ glucose
/ photons
/
/
/ Mitochondria appear in the greatest numbers in cells that are _____. ( Module 4.14)
/ reproducing
/ metabolically active
/ dead
/ metabolically inactive
/ undergoing cell division
/
/
/ Chloroplasts are found in _____. ( Module 4.15)
/ plant cells and some protists
/ animal cells only
/ both plant cells and animal cells
/ neither plant cells nor animal cells
/ animal cells and bacterial cells, but not in plant cells
/
/
/ Which cellular organelle is required for photosynthesis to occur in eukaryotic cells? ( Module 4.15)
/ chloroplast
/ nucleus
/ lysosome
/ Golgi apparatus
/ mitochondrion
/
/
/ Mitochondria and chloroplasts are similar in that they both _____; they are different in that chloroplasts, but not mitochondria, _____. ( Module 4.16)
/ have a double membrane … carry out photosynthesis
/ have many internal membranes that increase their internal surface area … are found in plants
/ have an internal 9 + 2 arrangement of microtubules … also have centrioles
/ deal with energy transformations … are found only in eukaryotes
/ have a double membrane … contain DNA
/
/
/ The internal skeleton of a cell is composed of _____. ( Module 4.17)
/ microtubules, intermediate filaments, and microfilaments
/ cellulose and intermediate filaments
/ cellulose, microtubules, and centrioles
/ microfilaments
/ microfilaments and cellulose
/
/
/ When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become rounded. The internal structures disrupted by this chemical are probably _____. ( Module 4.17)
/ cell junctions
/ microtubules
/ rough endoplasmic reticulum
/ mitochondria
/ dynein arms
/
/
/ Where would you expect to find contractile proteins in a cell? ( Module 4.17)
/ lysosomes
/ cytoskeleton
/ nucleus
/ smooth endoplasmic reticulum
/ chloroplasts
/
/
/ The protein actin is a component of a(n) _____. ( Module 4.17)
/ intermediate filament
/ microtubule
/ tubulin
/ microfilament
/ organelle
/
/
/ Cilia and flagella move due to energy provided by the enzymatic breakdown of ATP by _____. ( Module 4.18)
/ actin
/ pseudopodia
/ basal bodies
/ myosin
/ dynein arms
/
/
/ Basal bodies are most closely associated with which of the following cell components? ( Module 4.18)
/ microfilaments
/ centrioles
/ cilia
/ the central vacuole
/ mitochondria
/
/
/ Primary ciliary dyskinesia is a genetic disorder in which the cilia of the respiratory tract become immobile. As a result, these individuals suffer respiratory illnesses. This is because the cells _____. ( Module 4.19)
/ are adversely affected by tobacco and other products
/ lack dynein arms
/ are unable to communicate effectively
/ lack microtubules
/ do not get the correct signal from the nucleus
/
/
/ Integrins are proteins that are responsible for integrating changes that are occurring outside and inside the cell. They are able to do this because of _____. ( Module 4.20)
/ microfilaments
/ glycoproteins
/ the extracellular matrix
/ the nucleus
/ microtubules
/
/
/ Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why? ( Module 4.21)
/ The intestinal cells are fused together into one giant cell.
/ The intestinal cells are bound together by plasmodesmata.
/ The intestinal cells are bound together by tight junctions.
/ The intestinal cells are bound together by gap junctions.
/ The intestinal cells are bound together by anchoring junctions.
/
/
/ Which one of the following structures is directly involved in the passage of electrical signals between cells as, for example, in the vertebrate heart? ( Module 4.21)
/ gap junctions
/ chemical synapses
/ anchoring junctions
/ tight junctions
/ neuromuscular junctions
/
/
/ Dye injected into a plant cell might be able to enter an adjacent cell through a(n) _____. ( Module 4.22)
/ tight junction
/ microtubule
/ anchoring junction
/ plasmodesma
/ gap junction
/
/
/ The cell junctions in plant cells that provide channels between adjacent cells are generally _____. ( Module 4.22)
/ anchoring junctions
/ gap junctions
/ plasmodesmata
/ tight junctions
/ synapses
/
/
/ The general function of _____ is the breakdown of substances. ( Module 4.23)
/ chloroplasts
/ ribosomes
/ cell junctions
/ peroxisomes
/ the Golgi apparatus
/