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From smallest to Large:
1. What are the characteristic
1. Atoms & molecules-chemical level
levels of organization of the
2. Cells
body?
3. Tissues
4. Organs
5. Systems
2. What are cells? The smallest structural unit; organization of various chemicals
that can carry' out life's activities.
3. What are tissues? Organization of similar cells working together to perform a
specific job.
4. What are organs? Organizations of ditterent kinds of tissues working together to
perform a specific job.
5. What are systems? Organization of many kinds of organs working together to
perform a specific job.
6. What is an organism? Can be made of one cell or many organ systems.
7. The different substances that Protoplasm
makes the cell are collectively
called?
8. What components make up From greatest to least:
the protoplasm? 1. Water
2. Ions
3. Proteins
4. Lipids
5. Carbohydrates
9. What is cell theory?
,BMS 595 - PHYSIOLOGY EXAM 1 questions with
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Composed of THREE premises:
1. The cell theory is the theory that ALL organisms are com-
posed of one or more cells.
2. Cells are the basic unit of structure and function in organ-
isms.
3. All cells come from other cells.
10. Who first observed cells? Robert Hooke in 1665. He was and English mathematician and
Physicist. He first observed the live compartments in honey
combs and named them cellulae later known as cells.
11. What are the membranous 1. Plasma Membrane
organelles of Eukaryotic cells? 2. RER
3. SER
4. Golgi Apparatus
5. Lysosomes
5. Mitochondria
6. Peroxisomes
12. What are the non-membra- 1. Microtubules
nous organelles of eukaryotic 2. Filaments
cells? 3. Centrioles
4. Ribosomes
5. Proteasomes
13. Plasma Membranes are selec- Plasma Membranes are selectively permeable for solutes.
tively what for solutes?
14. Plasma Membranes are semi Plasma Membranes are semi-permeable for water.
what for water?
15. Appear trilaminar or tripartite under electron microscope.
,BMS 595 - PHYSIOLOGY EXAM 1 questions with
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What is the appearance of the
plasma membrane under an
electron microscope?
16. What is the composition of From Greatest to Least:
the plasma membrane? 1. Lipids
2. Proteins
3. Water
4. Carbohydrates
17. Why is the cell membrane A cell membrane is quasi-fluid since it functions like a solid
quasi fluid? by enclosing the contents of the cell and also like a liquid by
enabling molecules to pass via it by dittusion and osmosis.
18. Where do protein molecules Occur at places both inside and on the outer side.
occur in the bilayer?
19. What are the protein mole- Intrinsic & integral
cules that occur within the bi-
layer?
20. What are the protein mole- Extrinsic & Peripheral
cules that occur outside the
bilayer?
21. What do integral proteins do? Integral proteins pass into lipid bilayer & establish hydrophobic
bonds with lipid molecules
22. What are tunnel proteins? Some integral proteins run through out the lipid bilayer and
are called tunnel protein or transmembrane proteins.
These tunnels form channels for passage of water- and wa-
ter-soluble substance which passes selective properties for
,BMS 595 - PHYSIOLOGY EXAM 1 questions with
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passage of ditterent ions.