HUMAN BIO LATEST 2025 EXAM 2 WITH MULTIPLE
CHOICE OF QUESTIONS AND DETAILED CORRECT
ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS ( JUST RELEASED!!!!!)
- protein making machine (the builder)
- follows instructions from mRNA to make the protein
tRNA - CORRECT ANSWER-- transfer RNA
- brings the correct amino acid to the ribosome bead of codons (like a
delivery truck)
- each tRNA has an anticodon that matches the codon on the mRNA
Initiation - CORRECT ANSWER-- "outfit"
- ribosome attaches to mRNA
- finds the start codon (AUG)
- first tRNA brings in methionine (the start amino acid)
Elongation - CORRECT ANSWER-- "makeup"
- mRNA is read
- tRNA brings the correct amino acid
- amino acids link together to make the protein
,Termination - CORRECT ANSWER-- "hair"
- ribosome reaches the stop codon (UAA, UAG, or UGA)
- ribosome lets go of the finished protein
Silent Mutation - CORRECT ANSWER-- no effect
- changed codon codes for the same amino acid
Missense - Conservative Mutation - CORRECT ANSWER-- amino acid changes,
but it has the same chemical properties (ex: positively charged)
- little to no change in folding
- little to no effect (may or may not notice effect)
Missense - Non-Coservative Mutation - CORRECT ANSWER-- complete amino
acid change, diff chemical properties
- change in folding
- you will see effect
Nonsense Mutation - CORRECT ANSWER-- amino acid changes to a stop codon
- sequence will immediately stop
Insertion Frameshift Mutation - CORRECT ANSWER-- addition of nitrogenous
base
- completely different proton is being made
, Deletion Frameshift Mutation - CORRECT ANSWER-- subtraction of
nitrogenous base
- completely different proton is being made
enzyme - mutation = conservative mutation in active site - CORRECT ANSWER-
- a new amino acid will be coded for but the same chemical properties will
be present
- not much change
- the same protein folding will occur
channel protein for sucrose - mutation = non-conservative mutation in
hydrophobic region - CORRECT ANSWER-- the amino acid will have new
chemical properties
- the protein will fold differently
- protein will not stay embedded in the hydrophobic region because it is
changing properties
transcription factor - mutation = nonsense mutation - CORRECT ANSWER-- a
stop codon will be coded for
- the sequence will stop
Why does it make sense that DNA is replicated in a semi-conservative
manner? - CORRECT ANSWER-- built in backup plan
- keeps a backup copy incase there is a mistake in replication
- efficient for more copies
CHOICE OF QUESTIONS AND DETAILED CORRECT
ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS ( JUST RELEASED!!!!!)
- protein making machine (the builder)
- follows instructions from mRNA to make the protein
tRNA - CORRECT ANSWER-- transfer RNA
- brings the correct amino acid to the ribosome bead of codons (like a
delivery truck)
- each tRNA has an anticodon that matches the codon on the mRNA
Initiation - CORRECT ANSWER-- "outfit"
- ribosome attaches to mRNA
- finds the start codon (AUG)
- first tRNA brings in methionine (the start amino acid)
Elongation - CORRECT ANSWER-- "makeup"
- mRNA is read
- tRNA brings the correct amino acid
- amino acids link together to make the protein
,Termination - CORRECT ANSWER-- "hair"
- ribosome reaches the stop codon (UAA, UAG, or UGA)
- ribosome lets go of the finished protein
Silent Mutation - CORRECT ANSWER-- no effect
- changed codon codes for the same amino acid
Missense - Conservative Mutation - CORRECT ANSWER-- amino acid changes,
but it has the same chemical properties (ex: positively charged)
- little to no change in folding
- little to no effect (may or may not notice effect)
Missense - Non-Coservative Mutation - CORRECT ANSWER-- complete amino
acid change, diff chemical properties
- change in folding
- you will see effect
Nonsense Mutation - CORRECT ANSWER-- amino acid changes to a stop codon
- sequence will immediately stop
Insertion Frameshift Mutation - CORRECT ANSWER-- addition of nitrogenous
base
- completely different proton is being made
, Deletion Frameshift Mutation - CORRECT ANSWER-- subtraction of
nitrogenous base
- completely different proton is being made
enzyme - mutation = conservative mutation in active site - CORRECT ANSWER-
- a new amino acid will be coded for but the same chemical properties will
be present
- not much change
- the same protein folding will occur
channel protein for sucrose - mutation = non-conservative mutation in
hydrophobic region - CORRECT ANSWER-- the amino acid will have new
chemical properties
- the protein will fold differently
- protein will not stay embedded in the hydrophobic region because it is
changing properties
transcription factor - mutation = nonsense mutation - CORRECT ANSWER-- a
stop codon will be coded for
- the sequence will stop
Why does it make sense that DNA is replicated in a semi-conservative
manner? - CORRECT ANSWER-- built in backup plan
- keeps a backup copy incase there is a mistake in replication
- efficient for more copies
