Shared Flashcard Set

Details

Essential Microbiology-ch. 2
TEST YOURSELF: ch 2 biochemical principles (Hogg)
28
Microbiology
Graduate
10/10/2011

Additional Microbiology Flashcards

 


 

Cards

Term
The number of protons in an atom of an element is called
Definition
atomic number of that element
Term
The sum of the protons and neutrons in an atom is the
Definition
atomic mass of the element
Term
The number of _________ in an atom of an element is called atomic number of that element
Definition
protons
Term
The transfer of an ______ from one atom to another so that both achieve a full outer electron shell is called ionic bonding.
Definition
electron
Term
The transfer of an electron from one atom to another so that both achieve a full outer electron shell is called ___________.
Definition
ionic bonding
Term
___________ involves the sharing of one or more pairs of electrons.
Definition
Covalent bonding
Term
Covalent bonding involves the sharing of one or more pairs of __________.
Definition
electrons
Term
A solution with pH of 3 is _______ times more acidic than one with pH of 6.
Definition
1000
Term
Possession of a functional groups such as phosphate or aldehyde makes a molecule more hydrophilic and therefore more readily _______ in water.
Definition
dissolvable
Term
______ are joined together by glycosidic linkages.
Definition
Monosaccharides
Term
Sugars are joined together by _______ linkages.
Definition
glycosidic
Term
No matter how long a _______ grows, it always has an amino group at one end and a carboxyl group on the other.
Definition
peptide chain
Term
No matter how long a peptide chain grows, it always has an ______ group at one end and a ______ group on the other.
Definition
amino group & carboxyl group
Term
An example of a negatively charged amino acid is _______) or _________.
Definition
aspartate (aspartic acid) or glutamate (glutamic acid)
Term
An example of a _______ charged amino acid is aspartate (aspartic acid) or glutamate (glutamic acid).
Definition
negatively
Term
_________ bonds are formed between residues of the amino acid cysteine.
Definition
Disulfide
Term
Disulfide bonds are formed between residues of the amino acid _______.
Definition
cysteine
Term
Secondary protein structure is brought about by the formation of ______ bonds between amide groups and carboxyl groups.
Definition
hydrogen
Term
Secondary protein structure is brought about by the formation of hydrogen bonds between ______ groups and _______ groups.
Definition
amide & carboxyl
Term
Amino acids in naturally occurring proteins are all _ (one letter) -isomer. This results in an alpha helix of protein taking on a spiral or right-handed configuration for maximum stability. (*)
Definition
L
Term
Heating or treatment with certain chemicals cause proteins to lose their three dimensional structure and become _______.
Definition
denatured
Term
A short stretch of double stranded DNA has ____# adenine residues and _____# guanine residues.

There are therefore 61 cytosine residues and a total of 287 = (61*3)+(52*2) hydrogen bonds joining two strands.
Definition
52 adenine residues and 61 guanine residues
Term
The arrangement of _________________ is described as anti-parallel.
Definition
two strands of a DNA molecule
Term
The nucleotides of ___ contain uracil instead of thymine.
Definition
RNA
Term
The nucleotides of RNA contain uracil instead of thymine.
Definition
thymine
Term
19. Phospholipids are described as amphipathic because their molecules have both _______ and ______ regions
Definition
polar & nonpolar
Term
In fats, fatty acids are joined to ______ via ester linkages.
Definition
glycerol
Term
20. In fats, fatty acids are joined to glycerol via ester linkages.
Definition
ester
Supporting users have an ad free experience!