BCHM 4360 EXAM 1 CHAPTER 6 (ACTUAL EXAM 2025) | ALL QUESTIONS AND CORRECT
ANSWERS | VERIFIED ANSWERS | GRADED A+ | NEWEST EXAM (JUST RELEASED)
chemically, nucleic acid was found to consist of organic... - (ANSWER)1) nitrogenous bases
2) Pentose sugar
3) phosphate
glycosidic bond - (ANSWER)the bond between carbon 1' of the sugar and the base nitrogen
what is the primary difference between the two chemical species of nucleic acids? - (ANSWER)differing
pentose sugars:
1) DNA = 2-deoxyribose (H is attached to the 2' carbon)
2) RNA - ribose (a hydroxyl group (-OH) is attached to the 2' carbon)
DNA stands for - (ANSWER)deoxyribonucleic acid
RNA stands for - (ANSWER)ribonucleic acid
the connection between successive monomer units in nucleic acids is through a ___________ attached
to the ________ on carbon 5' of one unit and the _______ on the 3' carbon of the next one.
what is this connection called? - (ANSWER)1) phosphate group
2) hydroxyl
3) hydroxyl
***phosphodiester link***
the phosphate group of nucleotides is a... - (ANSWER)strong acid (pKA of about 1)
***this is why DNA and RNA are acidic***
an amino acid or nucleotide as it exists within a polypeptide or polynucleotide chain, respectively. -
(ANSWER)(sugar) residue
, BCHM 4360 EXAM 1 CHAPTER 6 (ACTUAL EXAM 2025) | ALL QUESTIONS AND CORRECT
ANSWERS | VERIFIED ANSWERS | GRADED A+ | NEWEST EXAM (JUST RELEASED)
every residue in a DNA or RNA molecule carries a _____ at physiological pH - (ANSWER)negative charge
both DNA and RNA are... - (ANSWER)polynucleotides
the phosphodiester-linked _______ form the backbone of the nucleic acid molecule - (ANSWER)sugar
residues
the importance of nucleic acids in information storage and transmission derives from their being
_________ - (ANSWER)heteropolymers
a polymer made up of differing monomeric units - (ANSWER)heteropolymers
what are 2 examples of heteropolymers? - (ANSWER)1) nucleic acids
2) proteins
each monomer (sugar residue) in the polymer chain carries a ______ - (ANSWER)heterocyclic base
aka
nucleobase
nuclobases are always connected to... - (ANSWER)the 1' carbon of the sugar
what are the two types of heterocyclic bases? - (ANSWER)derivatives of:
1) purine (small name, bigger molecule)
2) pyrimidine (big name, smaller molecule)
DNA has two purine bases which are _______ and two pyrimidines which are _______ cytosine and
thymine
how is this different in RNA? - (ANSWER)purine bases:
ANSWERS | VERIFIED ANSWERS | GRADED A+ | NEWEST EXAM (JUST RELEASED)
chemically, nucleic acid was found to consist of organic... - (ANSWER)1) nitrogenous bases
2) Pentose sugar
3) phosphate
glycosidic bond - (ANSWER)the bond between carbon 1' of the sugar and the base nitrogen
what is the primary difference between the two chemical species of nucleic acids? - (ANSWER)differing
pentose sugars:
1) DNA = 2-deoxyribose (H is attached to the 2' carbon)
2) RNA - ribose (a hydroxyl group (-OH) is attached to the 2' carbon)
DNA stands for - (ANSWER)deoxyribonucleic acid
RNA stands for - (ANSWER)ribonucleic acid
the connection between successive monomer units in nucleic acids is through a ___________ attached
to the ________ on carbon 5' of one unit and the _______ on the 3' carbon of the next one.
what is this connection called? - (ANSWER)1) phosphate group
2) hydroxyl
3) hydroxyl
***phosphodiester link***
the phosphate group of nucleotides is a... - (ANSWER)strong acid (pKA of about 1)
***this is why DNA and RNA are acidic***
an amino acid or nucleotide as it exists within a polypeptide or polynucleotide chain, respectively. -
(ANSWER)(sugar) residue
, BCHM 4360 EXAM 1 CHAPTER 6 (ACTUAL EXAM 2025) | ALL QUESTIONS AND CORRECT
ANSWERS | VERIFIED ANSWERS | GRADED A+ | NEWEST EXAM (JUST RELEASED)
every residue in a DNA or RNA molecule carries a _____ at physiological pH - (ANSWER)negative charge
both DNA and RNA are... - (ANSWER)polynucleotides
the phosphodiester-linked _______ form the backbone of the nucleic acid molecule - (ANSWER)sugar
residues
the importance of nucleic acids in information storage and transmission derives from their being
_________ - (ANSWER)heteropolymers
a polymer made up of differing monomeric units - (ANSWER)heteropolymers
what are 2 examples of heteropolymers? - (ANSWER)1) nucleic acids
2) proteins
each monomer (sugar residue) in the polymer chain carries a ______ - (ANSWER)heterocyclic base
aka
nucleobase
nuclobases are always connected to... - (ANSWER)the 1' carbon of the sugar
what are the two types of heterocyclic bases? - (ANSWER)derivatives of:
1) purine (small name, bigger molecule)
2) pyrimidine (big name, smaller molecule)
DNA has two purine bases which are _______ and two pyrimidines which are _______ cytosine and
thymine
how is this different in RNA? - (ANSWER)purine bases:
