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ACS Biochemistry Exam 2 Questions with correct Answers

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  • Biochemistry ACS
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  • Biochemistry ACS

ACS Biochemistry Exam 2

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  • September 3, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biochemistry ACS
  • Biochemistry ACS
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ACS Biochemistry Exam 2

What is a nucleotide? - answer 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? - answer A polymer that is made by a living organism

Nucleic acids are biopolymers of what? - answer DNA and RNA

What are the key features of DNA? - answer DNA is more stable
carries genetic information
double-stranded

What are the key features of RNA? – answer RNA is less stable
Most forms are intermediate 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? – answer 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? - answerFf 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? - answerPurines and Pyrimidines

What are the two types of purines? - answerAdenine and Guanine

Which bases are two rings, and which bases are one ring? - answerTwo rings: purines
(adenine and guanine)
One ring: pyrimidines (Cytosine, Thymine, Uracil)

What are the two ring bases made from? - answerThe two rings are made from a
pyrimidine and an imidazole

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