BIO 243
BIO 243 Final Exam 2025 – Latest
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Questions with 100% Verified Correct
Solutions | Already Graded A+
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3 chemical components of
DNA - answ✔️✔️✔️✔️-(deoxyribose)
sugar nitrogenous base phosphate
group
How deoxyribonucleotides are joined together to form a DNA chain
DNA - answ✔️✔️✔️covalent bond: 3',5'-phosphodiester bond (linkage)
Catalyzed by DNA polymerases
How two intertwining DNA chains form an antiparallel double helix
DNA - answ✔️✔️✔️3' end of template strand is near the 5' end of the complementary
strand, and vice versa
5' and 3' ends of a strand of
DNA - answ✔️✔️✔️✔️-3'-OH(COOH) 3' end contains has free hydroxyl group attached to
3'-carbon of last DNA residue
5'-phosphate(NH2) 5' end contains free unreacted phosphate group attached to 5'-
carbon of first deoxyribonucleotide residue.
How the physical and chemical properties of DNA make it ideally suited for storing
genetic info
DNA - answ✔️✔️✔️Long, thin DNA wrapped around positively charged histones that
help fold up the DNA into a highly condensed structure called chromatin.
BIO 243 Final Exam 2025 – Latest Fully Updated Actual Exam Questions with 100% Verified Correct Solutions
Already Graded A+ Guaranteed
, BIO 243
How the physical and chemical properties of DNA can be exploited for extracting
and purifying DNA
DNA - answ✔️✔️✔️take advantage of charge and length properties.
Separate histones from DNA (charge)
(length) wrapping it around glass rod to extract from solution.
Types of deoxyribonucleotides
DNA - answ✔️✔️✔️Purines: Adenine and Guanine
Pyramidines: Thymine and cytosine
Number of H-bonds between nucleotides
DNA - answ✔️✔️✔️2 in A=T
3 in C=G
phosphodiester backbone
DNA - answ✔️✔️✔️Part of DNA composed of alternating sugar and phosphate groups
joined by phosphodiester bonds.
5'-carbon
DNA - answ✔️✔️✔️carbon on the sugar in a nucleotide that has a phosphate group,
where a phosphodiester bond forms between the phosphate attached to the 5'-
carbon of the incoming deoxyribonucleotideand the hydroxyl attached to the 3'-
carbon of the deoxyribose from the last residue of the growing DNA chain.
Central Dogma of Molecular Biology
DNA - answ✔️✔️✔️information is transferred from DNA to RNA to protein
polyploidy
DNA - answ✔️✔️✔️condition in which an organism has multiple/extra sets of
chromosomes
BIO 243 Final Exam 2025 – Latest Fully Updated Actual Exam Questions with 100% Verified Correct Solutions
Already Graded A+ Guaranteed
BIO 243 Final Exam 2025 – Latest
Fully Updated Actual Exam
Questions with 100% Verified Correct
Solutions | Already Graded A+
Guaranteed
3 chemical components of
DNA - answ✔️✔️✔️✔️-(deoxyribose)
sugar nitrogenous base phosphate
group
How deoxyribonucleotides are joined together to form a DNA chain
DNA - answ✔️✔️✔️covalent bond: 3',5'-phosphodiester bond (linkage)
Catalyzed by DNA polymerases
How two intertwining DNA chains form an antiparallel double helix
DNA - answ✔️✔️✔️3' end of template strand is near the 5' end of the complementary
strand, and vice versa
5' and 3' ends of a strand of
DNA - answ✔️✔️✔️✔️-3'-OH(COOH) 3' end contains has free hydroxyl group attached to
3'-carbon of last DNA residue
5'-phosphate(NH2) 5' end contains free unreacted phosphate group attached to 5'-
carbon of first deoxyribonucleotide residue.
How the physical and chemical properties of DNA make it ideally suited for storing
genetic info
DNA - answ✔️✔️✔️Long, thin DNA wrapped around positively charged histones that
help fold up the DNA into a highly condensed structure called chromatin.
BIO 243 Final Exam 2025 – Latest Fully Updated Actual Exam Questions with 100% Verified Correct Solutions
Already Graded A+ Guaranteed
, BIO 243
How the physical and chemical properties of DNA can be exploited for extracting
and purifying DNA
DNA - answ✔️✔️✔️take advantage of charge and length properties.
Separate histones from DNA (charge)
(length) wrapping it around glass rod to extract from solution.
Types of deoxyribonucleotides
DNA - answ✔️✔️✔️Purines: Adenine and Guanine
Pyramidines: Thymine and cytosine
Number of H-bonds between nucleotides
DNA - answ✔️✔️✔️2 in A=T
3 in C=G
phosphodiester backbone
DNA - answ✔️✔️✔️Part of DNA composed of alternating sugar and phosphate groups
joined by phosphodiester bonds.
5'-carbon
DNA - answ✔️✔️✔️carbon on the sugar in a nucleotide that has a phosphate group,
where a phosphodiester bond forms between the phosphate attached to the 5'-
carbon of the incoming deoxyribonucleotideand the hydroxyl attached to the 3'-
carbon of the deoxyribose from the last residue of the growing DNA chain.
Central Dogma of Molecular Biology
DNA - answ✔️✔️✔️information is transferred from DNA to RNA to protein
polyploidy
DNA - answ✔️✔️✔️condition in which an organism has multiple/extra sets of
chromosomes
BIO 243 Final Exam 2025 – Latest Fully Updated Actual Exam Questions with 100% Verified Correct Solutions
Already Graded A+ Guaranteed
