Genetics Exam 3 Questions And Answers
2026 Update!!!
building block of nucleic acid → sugar,
what is a nucleotide?
phosphate, and base
composed of nucleotides - makes up DNA and
what is nucleic acid?
RNA
what is difference between nucleotides and
nucleic acids are made up of nucleotides
nucleic acids?
what are the complimentary base pairs in DNA? c = g and a=t
what is antiparallel arrangement in DNA? strands run from 5’ to 3’ opposite of 3’ to 5’
what is the primary structure of DNA? nucleotide sequences
what is the secondary structure of DNA? double helix shape
what is the tertiary structure of DNA? supercoiling - over coiling of double helix
why are phosphodiester bonds important? provides stability for DNA structure
stabilizes helix and helps with easy strand
why are hydrogen bonds important?
separation
3’ end = OH group → site of nucleotide addition
what is difference between 3’ and 5’ end?
5’ end = phosphate groups
how does DNA read? 3’ to 5’
How does mRNA read? 5’ to 3’
what is a double helix? two antiparallel strands twisted
when a dna cell makes a daughter cell identical
what is DNA replication?
to mother cell
what does bidirectional mean? when the replication forks move both ways
, each daughter DNA has one old and one new
what does semi conservative mean?
strand
2026 Update!!!
building block of nucleic acid → sugar,
what is a nucleotide?
phosphate, and base
composed of nucleotides - makes up DNA and
what is nucleic acid?
RNA
what is difference between nucleotides and
nucleic acids are made up of nucleotides
nucleic acids?
what are the complimentary base pairs in DNA? c = g and a=t
what is antiparallel arrangement in DNA? strands run from 5’ to 3’ opposite of 3’ to 5’
what is the primary structure of DNA? nucleotide sequences
what is the secondary structure of DNA? double helix shape
what is the tertiary structure of DNA? supercoiling - over coiling of double helix
why are phosphodiester bonds important? provides stability for DNA structure
stabilizes helix and helps with easy strand
why are hydrogen bonds important?
separation
3’ end = OH group → site of nucleotide addition
what is difference between 3’ and 5’ end?
5’ end = phosphate groups
how does DNA read? 3’ to 5’
How does mRNA read? 5’ to 3’
what is a double helix? two antiparallel strands twisted
when a dna cell makes a daughter cell identical
what is DNA replication?
to mother cell
what does bidirectional mean? when the replication forks move both ways
, each daughter DNA has one old and one new
what does semi conservative mean?
strand
