PCB 3023C / PCB3023C Exam 2:
(Latest Update ) Cell
Biology | Questions & Answers |
Grade A | 100% Correct - FGCU
Question:
Explain how codons are unambiguous (specific) and degenerate
Answer:
unambiguous because each individual codon codes for only one specific
amino acid, considered "degenerate" because multiple codons can code for
the same amino acid
Question:
how many total codons for amino acids
Answer:
64
,Question:
how many tRNA molecules
Answer:
45
Question:
how many amino acids
Answer:
20
Question:
3 parts of mRNA processing
Answer:
5' capping
RNA splicing
polyadenylation
,Question:
•Describe the 3 differences between RNA and DNA
Answer:
1. DNA is double stranded, RNA is single
2. DNA contains thymine as a base, RNA contains uracil
3. DNA contains deoxyribose, RNA contains ribose
Question:
3 steps of translation
Answer:
1. Initiation
2. Elongation
3. Termination
Question:
It is the ____, not the presence, of a gene that determines the properties of a
cell
Answer:
expression
, Question:
Cell differentiation occurs through changes in ____ patterns of genes, not
permanent changes to the nucleotide sequence of DNA.
Answer:
expression
Question:
transcription factors and other regulatory elements that control gene
expression in specific tissues
Answer:
tissue specific regulators
Question:
reduces the change/output (return system back to stable state)
Answer:
negative feedback
Question:
increases change or output (amplified signal)
Answer:
positive feedback
(Latest Update ) Cell
Biology | Questions & Answers |
Grade A | 100% Correct - FGCU
Question:
Explain how codons are unambiguous (specific) and degenerate
Answer:
unambiguous because each individual codon codes for only one specific
amino acid, considered "degenerate" because multiple codons can code for
the same amino acid
Question:
how many total codons for amino acids
Answer:
64
,Question:
how many tRNA molecules
Answer:
45
Question:
how many amino acids
Answer:
20
Question:
3 parts of mRNA processing
Answer:
5' capping
RNA splicing
polyadenylation
,Question:
•Describe the 3 differences between RNA and DNA
Answer:
1. DNA is double stranded, RNA is single
2. DNA contains thymine as a base, RNA contains uracil
3. DNA contains deoxyribose, RNA contains ribose
Question:
3 steps of translation
Answer:
1. Initiation
2. Elongation
3. Termination
Question:
It is the ____, not the presence, of a gene that determines the properties of a
cell
Answer:
expression
, Question:
Cell differentiation occurs through changes in ____ patterns of genes, not
permanent changes to the nucleotide sequence of DNA.
Answer:
expression
Question:
transcription factors and other regulatory elements that control gene
expression in specific tissues
Answer:
tissue specific regulators
Question:
reduces the change/output (return system back to stable state)
Answer:
negative feedback
Question:
increases change or output (amplified signal)
Answer:
positive feedback
