BIO 101 EXAM 2 WCC STUDY GUIDE AND PRACTICE
QUESTIONS 2026/2027
function units of nucleic acids - Ans✅✅✅ nucleotides
physical makeup of a nucleic acid - Ans✅✅✅ 5 carbon ribose sugar, phosphate group, and a
nitrogenous base
the nitrogenous bases are - Ans✅✅✅ adenine, guanine, thymine, cytosine, and uracil
replication - Ans✅✅✅ makes a copy of a dna strand
helicase - Ans✅✅✅ breaks open the dna ladder during replication
dna polymerase - Ans✅✅✅ binds molecules and brings in copies during replication
ligase - Ans✅✅✅ joins molecules back together during replication
transcription and translation are known together as - Ans✅✅✅ protein synthesis
transcription - Ans✅✅✅ copying a gene only
gene - Ans✅✅✅ small segment of dna that codes for a specific protein
codon - Ans✅✅✅ reads three base pairs at a time
anticodon - Ans✅✅✅ transfer RNAS contain anticodons to match up with codons
, stop codon - Ans✅✅✅ stops the codon from reading
the genetic code - Ans✅✅✅ which amino acid codes with which base pair
start codons - Ans✅✅✅ tells the codon where to start reading from
nucleic acids bond by - Ans✅✅✅ weak hydrogen bonds between base pairs
introns - Ans✅✅✅ does not code for a specific protein
exons - Ans✅✅✅ contains information for coding proteins
hox genes(master control genes) - Ans✅✅✅ control genes that coordinate other genes and regulate
gene expression
98% of our dna does not code for a specific - Ans✅✅✅ protein
master switch genes - Ans✅✅✅ turn genes on and off
single gene may form ________ or more proteins - Ans✅✅✅ three
more chromosomes does not mean - Ans✅✅✅ more complicated
humans have 23 pairs of - Ans✅✅✅ chromosomes
humans have 46 - Ans✅✅✅ chromosomes in total
mutation - Ans✅✅✅ change in a dna sequence
QUESTIONS 2026/2027
function units of nucleic acids - Ans✅✅✅ nucleotides
physical makeup of a nucleic acid - Ans✅✅✅ 5 carbon ribose sugar, phosphate group, and a
nitrogenous base
the nitrogenous bases are - Ans✅✅✅ adenine, guanine, thymine, cytosine, and uracil
replication - Ans✅✅✅ makes a copy of a dna strand
helicase - Ans✅✅✅ breaks open the dna ladder during replication
dna polymerase - Ans✅✅✅ binds molecules and brings in copies during replication
ligase - Ans✅✅✅ joins molecules back together during replication
transcription and translation are known together as - Ans✅✅✅ protein synthesis
transcription - Ans✅✅✅ copying a gene only
gene - Ans✅✅✅ small segment of dna that codes for a specific protein
codon - Ans✅✅✅ reads three base pairs at a time
anticodon - Ans✅✅✅ transfer RNAS contain anticodons to match up with codons
, stop codon - Ans✅✅✅ stops the codon from reading
the genetic code - Ans✅✅✅ which amino acid codes with which base pair
start codons - Ans✅✅✅ tells the codon where to start reading from
nucleic acids bond by - Ans✅✅✅ weak hydrogen bonds between base pairs
introns - Ans✅✅✅ does not code for a specific protein
exons - Ans✅✅✅ contains information for coding proteins
hox genes(master control genes) - Ans✅✅✅ control genes that coordinate other genes and regulate
gene expression
98% of our dna does not code for a specific - Ans✅✅✅ protein
master switch genes - Ans✅✅✅ turn genes on and off
single gene may form ________ or more proteins - Ans✅✅✅ three
more chromosomes does not mean - Ans✅✅✅ more complicated
humans have 23 pairs of - Ans✅✅✅ chromosomes
humans have 46 - Ans✅✅✅ chromosomes in total
mutation - Ans✅✅✅ change in a dna sequence
