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BIO103 Exam 1
Chapters 3, 4, 5
43
Biology
Undergraduate 4
02/07/2017

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Term
osmosis
Definition
diffusion of water across the membrane
Term
dynamic equilibrium
Definition
particles are still moving, concentration not changing
Term
concentration gradient
Definition
difference in concentration from one place to another
Term
Passive Transport
Definition
  • requires no cell energy
  • movement from higher to lower concentration
Term
cell membranes are _
Definition
selectively permeable
Term
Nucleotides
Definition
  • repeating units
    1. form the basic structural unit of nucleic acids such as DNA
    2.  
     
     
Term
Nucleic Acids
Definition
macromolecules that transmit hereditary information
Term
Stages in the formation of a protein
Definition
  1. Primary structure
  2. Secondary Structure
  3. Tertiary Structure
Term
Categories of proteins
Definition
  1. Structural
  2. Functional
Term
Proteins
Definition
Polypeptide chains of 100 or more amino acids
Term
Lipids
Definition
  • fats
  • waxes
  • fat-soluble vitamins
  • monoglycerides
  • diglycerides
  • triglycerides
Term
Neutral Lipids
Definition
  • Palmitic Acid
  • Oleic Acid
  • Lineolic Acid
Term
Polymer of Fructose
Definition
Inulin
Term
Polymer
Definition
similar units bonded together
Hydrogen
Oxygen
Carbon
Term
Polymer of Galactose
Definition
Pectin
Term
Four major groups of organic compounds
Definition
  • carbohydrates
  • lipids
  • proteins
  • nucleic acids
Term
Glycosidic Bond
Definition
  • when glucose is joined together
  • bond between two molecules when a hydrogen is removed and leaves an oxygen
Term
Breaking Down Reactions
Definition
larger molecules split up into smaller ones
ex.: Hydolosis
Term
Building Up Reactions
Definition

Small molecules combine to make a larger one

ex.: Dehydration

Term
Polymers of Glucose
Definition
  • starch 
  • glycogen
  • cellulose
  • chitin
Term
Macromolecules
Definition
  • giant molecules consisting of thousands of atoms
  • most are polymers
Term
Nucleolus
Definition
makes ribosomes
Term

A. Contraction

B. Conduction

Definition

A. 9+2 arrangement of microtubules

B. 9x3 arrangement of microtubules

Term
Cilia
Definition
  • are self-duplicating
  • two types: Contraction and Conduction
Term
3 Types of Plastids
Definition

A. Leukoplasts - contain starch granules

B. Chromoplats - contain colour pigments

C. Chloroplats - contain chlorophile and carotenoids

Term
Mitcochondria
Definition
  • has its own DNA
  • contain respiratory enzymes
Term
Ribosomes
Definition
sites of protein synthesis
Term
Endoplasmic Reticulum (ER)
Definition
makes lipids and proteins
Term
Rough ER
Definition
ER with ribosomes attached
Term
Smooth ER
Definition
ER with no ribosomes attached
Term
Golgi
Definition
packages, stores, transports, and sercretes protein to the outside of the cell
Term
Lysosomes
Definition
gets rid of unwanted tissue
Term
Vacuoles
Definition
  • Phagosome
  • Pinosome
  • Contractile
Term
Features of Plant Cells that are Absent in Animal Cells
Definition
  • Cell Wall
  • Chloroplasts
  • Large Central Vacuole
Term
Two Basic Types of Organisms and Cells
Definition

1. Prokaryotic - DNA is not enclosed within a nuclear membraine (no nucleus) i.e. Bacteria

2. Eukaryotic - DNA is located within a nucleus (all other forms of life)

Term
Endocytosis
Definition
materials are taken into the cell
Term
Exocytosis
Definition
a cell ejects waste
Term
Active Transport
Definition
  • requires cell energy
  • movement is from lower to higher particle concentration
  • may use "carrier molecules"
Term
Facilitated Diffusion
Definition
a specific transport protein makes the membraine permeable to a particular solute
Term
where you find more solute, you find less _
Definition
water
Term
Hypotonic
Definition
fluid contains lower osmotic pressure
Term
Isotonic
Definition
concentration of solute is equal to that of what is in the cell
Term
osmotic pressure
Definition
water moves to where the soltue is in highest concentration
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