Biology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is the type of barrier that only allows certain molecules to pass through? | Selectively Permeable
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| What is the type of transport in which water moves with its concentration gradient? | Passive Transport
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| What are the requirements for allowing materials to cross the barrier? | Size of molecule, size of pore, and concentration
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| Which transport does not require energy from cell? | Passive
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| What is it called when the concentration of a substance is the same throughout space? | Equilibrium
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| Plasmolysis of a human red blood cell or plant would occur if the cell would occur if the cell were in what type of solution? | Hypertonic
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| What is the bursting of a cell called? | Cytolysis
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| What is the pressure that water molecules exert against a cell wall? | Turgor Pressure
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| What is known as a relatively high solute concentration called? | Hypertonic
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| What is the uptake of large particles called? | Phagocytosis
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| What is known as a relatively low solute concentration called? | Hypotonic
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| What is known as when the concentration of solutes outside and inside the cell are equal? | Isotonic
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| What is a transport that requires the cell to expend energy called? | Active Transport
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| Which type of molecule forms a bilayer within a cell membrane? | Lipids
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| What other compounds have a close relationship with the membrane? | Proteins
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| Glucose molecules cross the cell membrane down the concentration gradient leads to a ___________? | Passive Transport
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| What is it called when ridding the cell of material by discharging it from sacs (vesicles) at the cell surface? | Exocytosis
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| What organelle does a plant cell have that helps maintain stability and rigidity? | Cell Wall
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| Which structure permits the entry and exit of dissolved materials in an animal cell? | Cell Membrane
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| What is the structure most closely associated with the destruction of worn out cell organelles called? | Lysosomes
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| In which organelle would water and dissolved materials be stored? | Vesicles
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| What organelle is most directly involved in cellular aerobic respiration? | Mitochondria
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| Which two structures are only found in animal cells? | Vesicles and Centrioles
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| What is responsible for carrying on photosynthesis within plants? | Chloroplasts
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| What is responsible for protein synthesis in the cell? | Ribosomes
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| What structure are used to modify and package secretions for exports from the cell? | Golgi Bodies
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| What is an organelle which appears to play a role in animal cell division? | Centrioles
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| Name 3 parts of the cell theory and the scientists who contributed | Robert Hooke- discovered and named the "cell"
(observed cork and decided they look like prison cells)
Robert Brown- discovered cell nucleus
Scleiden & Schwann- all plants and animals ared made out of cells
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| What's the difference between passive and active transport? | Active requires energy and passive does not
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| What process would happen to the molecules in a drop of ink dropped into a beaker of water? | Diffusion
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| How would temperature affect diffusion? | Heat would speed it up
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| Define hypotonic? | Lower concentration of solute on inside and less H20 on OUTSIDE
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| Define hypertonic? | Higher concentration of solute on outside and more H20 on INSIDE
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| Define isotonic? | Equal balance of solutes on each side of membrane
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| Iodine was used to stain which organelle of potatoes in order to see them? | Leucoplast
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| What is the End symbiotic Theory? | Mitochondria and chloroplasts were once free living cells
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| What is the difference between a vesicle and a lysosome? | A vesicle is the storage unit for the cell of water, nutrients, and waste. A lysosome has digestive enzymes that merge with vesicles to digest food.
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| What is the difference between a prokaryotic and eukaryotic cell? | Prokaryotic- an organelle that has no nuclear membrane, no organelles in the cytoplasm except ribosomes
Eukaryotic- an organelle with a structure of cytoplasm, a membrane-bound nucleus enclosing genetic material organized into chromosomes
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| Why did we use dyes such as methylene blue and iodine to stain specimens in lab? | To identify different organelles
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| What is the difference between magnification and resolution? | Magnification- (ex 100x) zooming in
Resolution- clarity
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| What should be done when you can't focus an image under high power? | Go back to low power
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| What does the coarse adjustment do? | Used to focus on scanning and low power *NEVER HIGH*
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| What does the ocular lens do? | (Aka Eyepiece) is the lens to look into microscope magnifies 10X
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| What does the diaphragm do? | Regulates amount of light to pass through specimen
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| What does the high power objective lens do? | Stronger magnification 40X
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| What does the revolving nose piece do? | Holds and turns objective lens into viewing positions
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| What does the fine adjustment do? | Sharpen image under low and HIGH power
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| Which direction do molecules always move? | Down
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