PRINCIPLES OF BIOCHEMISTRYFINAL
EXAM 2026/2027 ACTUAL QUESTIONS
WITH VERIFIED ANSWERS.
What is the first step in gene expression control? - correct
answer-control of mRNA processing
A key reaction in gene activation is the acetylation of this
(these) amino acids in histones - correct answer-lysine
Genes expressed at all times and in all cells are subject to
__________ expression - correct answer-constitutive
Eukaryotic translational control of gene expression include:
A. DNA methylation
B. histone acetylation
C. alternative splicing
D. phosphorylation of eIF2 - correct answer-phosphorylation of
eIF2
,True or False: The different cell types in a multicellular
organism have the same pattern of gene expression - correct
answer-False
Which of the following molecules is NOT a gene product?
A. DNA
B. RNA
C. protein - correct answer-DNA
Protein synthesis can account for up to _____% of the energy
used by a cell for all biosynthetic reactions - correct answer-
90%
An activator protein involved in gene regulation can have the
following domains, EXCEPT
A. DNA-binding domain
B. activation domain
C. transmembrane domain - correct answer-transmembrane
domain
, ________ and ________ are examples of GENOMIC control -
correct answer-DNA methylation and histone acetylation
In most organisms, gene expression is regulated primarily at
the __________ level - correct answer-transcriptional
Repressors and activators are usually ___________ - correct
answer-DNA binding proteins
The 3D structure of macromolecules is formed and maintained
primarily through what type of interactions? - correct answer-
noncovalent
This term refers to the chemical reactions that occur in a living
cell - correct answer-metabolism
In metabolism, some substances are broken down to yield
energy for vital processes, this is known as ________ - correct
answer-catabolism
EXAM 2026/2027 ACTUAL QUESTIONS
WITH VERIFIED ANSWERS.
What is the first step in gene expression control? - correct
answer-control of mRNA processing
A key reaction in gene activation is the acetylation of this
(these) amino acids in histones - correct answer-lysine
Genes expressed at all times and in all cells are subject to
__________ expression - correct answer-constitutive
Eukaryotic translational control of gene expression include:
A. DNA methylation
B. histone acetylation
C. alternative splicing
D. phosphorylation of eIF2 - correct answer-phosphorylation of
eIF2
,True or False: The different cell types in a multicellular
organism have the same pattern of gene expression - correct
answer-False
Which of the following molecules is NOT a gene product?
A. DNA
B. RNA
C. protein - correct answer-DNA
Protein synthesis can account for up to _____% of the energy
used by a cell for all biosynthetic reactions - correct answer-
90%
An activator protein involved in gene regulation can have the
following domains, EXCEPT
A. DNA-binding domain
B. activation domain
C. transmembrane domain - correct answer-transmembrane
domain
, ________ and ________ are examples of GENOMIC control -
correct answer-DNA methylation and histone acetylation
In most organisms, gene expression is regulated primarily at
the __________ level - correct answer-transcriptional
Repressors and activators are usually ___________ - correct
answer-DNA binding proteins
The 3D structure of macromolecules is formed and maintained
primarily through what type of interactions? - correct answer-
noncovalent
This term refers to the chemical reactions that occur in a living
cell - correct answer-metabolism
In metabolism, some substances are broken down to yield
energy for vital processes, this is known as ________ - correct
answer-catabolism
