biology final

20 cards

biology flash cards. f


 
  
Created Mar 25, 2012
by
kellyt004

 

 
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1
The special molecules that have large structures and characteristically made by living organisms...
 
macromolecules
2
Three of the four macromolecules present in living systems are ________ which means they are...
 
polymers
3
Proteins that can carry out catalysis in organisms are called ________.
 
enzymes
4
A modified form of cellulose found in the exoskeletons of insects and crustaceans is known...
 
chitin
5
Non-polarity and insolubility characterize biological compounds known as _________.
 
lipids
6
__________ are polymers containing up to 20 different kinds of naturally occurring amino acids....
 
proteins
7
The covalent bonds connecting monomer units in sugars can be formed by the removal of a water...
 
dehydration
8
This atom in its unbound state has four valent electrons. These electrons readily form single,...
 
carbon
9
Macromolecules are disassembled in ____________ reactions.
 
hydrolysis
10
Relatively small organic molecules with a central carbon atom which is bonded to a carboxyl...
 
amino acids
11
Macromolecules that are used by organisms to store hereditary information are called
 
DNA molecules
12
DNA, RNA, and ATP contain functional units known as
 
nucleotides
13
Which of the following is not a property of carbon?
 
All compounds made from carbon are soluble in water.
14
Which of the following is not a macromolecule?
 
water
15
All of the following are examples of functional groups in cells except  
 
-H2O
16
Carbohydrates are polymers formed of structural units called
 
monosaccharides
17
Biological membranes contain bilayers of which of the following lipids?
 
phospholipids
18
A chain of amino acids linked together end-to-end can only be found in a
 
polypeptide
19
The specific amino acid sequence in a protein is its
 
primary structure
20
Alpha helix and beta pleated sheets are examples of which level of protein structure?
 
secondary

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