biochem Module 7 Flashcards
(116 cards)
true or false. nucleosides are nucleotides with phosphate groups
false
nucleotides are nucleosides with phosphate group
which part of the lac operon will encode for permease
a. lac I
b. lac z
c. lac y
d. lac a
c
sugar used in RNA is a product from which metabolic pathway
a. glycolysis
b. gluconeogenesis
c. PPP
d. ETC
c
In making nucleic acids, these are needed
a. nucleotide monophosphate
b. nucleotide diphosphate
c. nucleotide triphosphate
d. nucleoside
c
in adenosine triphosphate, phosphate groups are bonded by
a. glycosidic
b. phosphodiester
c. H bond
d. acid anhydride
d
name this structure
nitrogenous base: cytosine
sugar: deoxyribose
phosphate group: 1
deoxycytidine monophosphate
in purines, glycosidic bond is normally between ____ of sugar and ____ of purine
a. C1 and N1
b. C2 and N3
c. C3 and N5
d. C2 and N7
d. C1 and N9
d
in nuclei acids, the base pair C-G is linked by
a. 1 G bond
b. 2 H bond
c. 3 H bond
d. oxygen bond
c
nucleotides are linked together by
a. glycosidic
b. phosphodiester
c. H bond
d. acid anhydride
b
in the body, the first pyrimidine synthesized is
a. AMP
b. UMP
c. OMP
d. IMP
c
end product of purine metabolism
a. orotic acid
b. hydrochloric acid
c. uric acid
d. hydroxyapatite
c
the ff makes up a adenosine monophosphate except
a. purine
b. pyrimidine
c. ribose
d. phosphate group
b
synthetic nucleotide analogues are effective as anti virals because they act by
a. competitive inhibitors
b. non competitive inhibitor
c. enzyme inhibitor
d. enzyme inducer
a
deoxyribose has only 1 hydroxyl group attach to
a. carbon 1
b. carbon 2
c. carbon 3
d. carbon 4
e. carbon 5
c
if ribose carbon 2 and 3
the role of pyrophosphate in purine synthesis is
a. part of the final product
b. energy source
c. inhibitor
d. NOTA
b
rate limiting enzyme in purine synthesis
a. PRPP synthetase
b. AIR carboxylase
c. PRPP glutamyl aminotransferase
d. PGAM synthase
c
in ring closure, the process involved is
a. decarboxylation
b. oxidation
c. dehydrogenation
d. dehydration
d
initial substrate in purine synthesis
a. Glutamine
b. ribose 5 phosphate
c. IMP
d. amino acid
b
major site of purine synthesis
a. kidney
b. muscle
c. heart
d. liver
d
second messenger utilized by nitric oxide
a. cAMP
b. cGMP
c. phospholipase C
d. G protein
b
what amino acid can be synthesized from ribose 5 phosphate
a. glutamine
b. aspartate
c. arginine
d. histidine
d
the nitrogen 1 of purine is from
a. aspartate
b. CO2
c. N10 formyl THF
d. glycine
a
true or false. we can use the nucleic acids from the food we eat for purine anabolism
false
the repressor gene in bacteriophage lamba is an example of
a. positive regulator
b. negative regulator
c. both
d. nota
c