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59 Cards in this Set
- Front
- Back
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Does a prokaryotic cell have a nucleus?
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no
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Which type of cell can be single-celled or multicellular?
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Eukaryote
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Which part of a microscope contains a magnifying lens?
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the eye-piece
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What does the body tube do?
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Keeps the right distance between the eyepiece and the objective lens
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Which part of the microscope supports the body tube?
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Arm
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What does the revolving nose piece do?
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Rotates to change the magnification
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What does the stage do?
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Supports the slide that you are looking at.
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The high-power objective
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magnifies 43x
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The opening in the stage allows what through
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light
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Low-Power objective
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magnifies by 10x
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What does the fine-adjustment do?
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Moves the body tube just a little to sharpen the focus
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What holds the slide in place?
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Stage clips
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What type of adjustment moves the body tube up and down to focus?
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Course Adjustment
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The diaphragm lever...
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Opens and closes the diaphragm
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What supports the microscope?
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Base
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What regulates the amount of light entering the body tube?
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The diaphragm
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The illuminator
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produces and reflects light through the body tube
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What did Schleiden, Schwann, & Virchow do?
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Their work led to the development of the cell theory
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How do you clean the lenses of the microscope?
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With a lens paper
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If you are using high power which adjustment would you use?
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Fine adjustment
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When you increase magnification your field size does what?
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decreases
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Eukaryotic cells are bigger than how many microns?
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10 microns
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How many chromosomes does a prokaryote have?
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1
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Polar substances attract _________
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water
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What type of cells have centrioles?
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animal cells
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How many amino acids are there?
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20
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How do we get amino acids?
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From proteins
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Monosaccharide means
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one sugar
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C H O is the formula for what?
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a disaccharide
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What is the formula for cellulose?
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(C H O )x
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Field of View
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The white circle of light you see when you look in the microscope
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Which power has the smallest field of view?
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High-Power
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How many statements does the Cell theory have?
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3
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What is the support structure within the cytoplasm called?
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cytoskeleton
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What is the cytoskeleton made out of?
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a thin, fibrous element
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What do cillia and flagella do?
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move the cell
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What are cillia?
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short hairlike projections from the plasma membrane
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Which type of cells are unicellular - prokaryottes or eukaryotes
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prokaryotes
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In what type of cells are cillia and flagella the major means of locomotion?
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Prokaryotes
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What unit of measurement is used to determine the size of samples being looked at under a microscope?
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micrometer
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The idea that living things are made up of cells is called the ___________
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Cell Theory
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Revolving Nosepiece allows you to ___________
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switch objectives
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Which power do you start your observation with?
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Scanning
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How do you find the total magnification of a microscope with an eyepiece of 10x and an objective of 20x?
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You multiply the eyepiece magnification and the objective magnification.
10 x 20 = 200x |
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How many micrometers are in a millimeter
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1,000
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Mitochondria
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The "power houses"
transform food into energy |
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Nuclear Membrane
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Regulates what enters and exits the nucleus of the cell
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Nucleolus
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Where ribosomes are made
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Nucleoplasm
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Fills the nucleolus
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Nucleus
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Holds the genetic information of the cell. It is the control center.
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Ribosomes
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Produce proteins
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Vacuole
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Where water, carbohydrates, waste, etc. is stored in a cell
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Cell Wall
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Provides structure and protection to the cell.
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Cell Membrane
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Regulates what enters and exits the cell
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Centriole
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Aids in cell division. Are only in animal cells
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Chloroplast
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Changes light into energy in plant cells.
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Chromosomes
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Contain the gender information of a cell.
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What are the 2 types of cells?
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Prokaryotes, and Eukaryotes
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What are the 2 types of Eukaryotic cells?
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Plant cells and Animal cells
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