CAMPBELL BIOLOGY IN FOCUS CHAPTER 43
CERTIFICATION EVALUATION TEST COMPLETE
QUESTIONS AND CORRECT ANSWERS
◉ Magnification.
Answer: Ratio of an object's image size to its real size
◉ Resolution.
Answer: Measure of the clarity of an image
◉ Contrast.
Answer: Difference in brightness between the light and dark areas of
the image
◉ Cell theory.
Answer: All living things are composed of cells; all cells come from
other cells; the cell is the basic structural and functional unit of all
living things
◉ Organelle.
Answer: Membrane-enclosed structures within eukaryotic cells
,◉ Electron microscope (EM).
Answer: Microscope that focuses a beam of electrons through the
specimen
◉ Scanning electron microscope (SEM).
Answer: Microscope that uses the electron beam scans the surface of
the sample, usually coated with a thin film of gold, which excites
electrons on the surface, and these secondary electrons are detected
by a device that translates the pattern of electrons into an electronic
signal sent to a video screen
◉ Transmission electron microscope (TEM).
Answer: Microscope that aims an electron beam through a very thin
section of the specimen, much as a light microscope aims light
through a sample on a slide, to study internal structure of cells
◉ How big are cells, bacteria, organelles?.
Answer: 1-100 micrometers (µm)
◉ Cytology.
Answer: Study of cell structure
◉ Biochemistry.
Answer: Study of chemical processes of cells
, ◉ Cell fractionation.
Answer: Technique in which cells are broken into pieces and the
different cell parts are separated
◉ Cytosol.
Answer: Fluid portion of cytoplasm
◉ Chromosomes.
Answer: Threadlike structures made of DNA molecules that contain
the genes
◉ Nucleoid.
Answer: Non-membrane-bounded region in a prokaryotic cell where
the DNA is concentrated
◉ Cytoplasm.
Answer: Interior of either type of cell
◉ Plasma membrane.
Answer: Selectively-permeable phospholipid bilayer forming the
boundary of the cells that allows oxygen, nutrients, wastes passage
CERTIFICATION EVALUATION TEST COMPLETE
QUESTIONS AND CORRECT ANSWERS
◉ Magnification.
Answer: Ratio of an object's image size to its real size
◉ Resolution.
Answer: Measure of the clarity of an image
◉ Contrast.
Answer: Difference in brightness between the light and dark areas of
the image
◉ Cell theory.
Answer: All living things are composed of cells; all cells come from
other cells; the cell is the basic structural and functional unit of all
living things
◉ Organelle.
Answer: Membrane-enclosed structures within eukaryotic cells
,◉ Electron microscope (EM).
Answer: Microscope that focuses a beam of electrons through the
specimen
◉ Scanning electron microscope (SEM).
Answer: Microscope that uses the electron beam scans the surface of
the sample, usually coated with a thin film of gold, which excites
electrons on the surface, and these secondary electrons are detected
by a device that translates the pattern of electrons into an electronic
signal sent to a video screen
◉ Transmission electron microscope (TEM).
Answer: Microscope that aims an electron beam through a very thin
section of the specimen, much as a light microscope aims light
through a sample on a slide, to study internal structure of cells
◉ How big are cells, bacteria, organelles?.
Answer: 1-100 micrometers (µm)
◉ Cytology.
Answer: Study of cell structure
◉ Biochemistry.
Answer: Study of chemical processes of cells
, ◉ Cell fractionation.
Answer: Technique in which cells are broken into pieces and the
different cell parts are separated
◉ Cytosol.
Answer: Fluid portion of cytoplasm
◉ Chromosomes.
Answer: Threadlike structures made of DNA molecules that contain
the genes
◉ Nucleoid.
Answer: Non-membrane-bounded region in a prokaryotic cell where
the DNA is concentrated
◉ Cytoplasm.
Answer: Interior of either type of cell
◉ Plasma membrane.
Answer: Selectively-permeable phospholipid bilayer forming the
boundary of the cells that allows oxygen, nutrients, wastes passage
