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ACS Biochemistry Exam– Questions With Solutions (100% Correct)
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ACS Biochemistry Exam– Questions With Solutions (100% Correct)
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ACS Biochemistry Exam– Questions With Solutions(100% Correct)
What is a nucleotide? Right Ans - Nucleotides are the monomer unit of
nucleic acids. They're composed of a nitrogenous base, 5-carbon sugar and a
phosphate group
What is a biopolymer? Right Ans - A polymer that is made by a living
organism
Nucleic acids are biopolymers of what? Right Ans - DNA and RNA
What are the key features of DNA? Right Ans - DNA is more stable
carries genetic information
double-stranded
What are the key features of RNA? Right Ans - RNA is less stable
Most forms are ntermediate in expression of genetic information
Can form secondary structures by hydrogen bonding with itself (ex: tRNA)
Usually single-stranded
What are the types of RNA, and what do they do? Right Ans - tRNA: transfer
RNA, holds amino acids used in protein synthesis, wobble
rRNA: ribosomal RNA, part of the ribosome
siRNA: small interfering RNA,short term silencing of pleiotrophin coding
genes, targets mRNA for degradation
miRNA: micro RNA, silencing and post-transcriptional regulation of gene
expression
RNA serves a wide variety of purposes compared to DNA; they can also
catalyze reactions
Why does inosine display true wobble qualities? Right Ans - Ff that is the
first nucleotide in the anticodon then any of three bases in the original codon
can be matched with the tRNA
What are the two categories of nitrogenous bases? Right Ans - Purines and
Pyrimidines
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