Molecular cell biology
Molecular Cell Biology 9th Edition advanced 2025
(All Chapters)
Study guide with frequently tested questions and
answers
@ pg. 1
, Molecular cell biology
Cell cycle - ✔✔✔The orderly sequence of events by which a cell duplicates its contents
and divides into two.
Base pair - ✔✔✔Two complementary nucleotides in an RNA and a DNA molecule that
are held together by hydrogen bonds.
Chromatin - ✔✔✔Complex of DNA and proteins that makes up the chromosomes in a
eukaryotic cell.
Centromere - ✔✔✔Specialized DNA sequence that allows duplicated chromosomes to
be separated during M phase; can be seen as the constricted region of a mitotic
chromosome.
Double helix - ✔✔✔The typical structure of a DNA molecule in which the two
complementary polynucleotide strands are wound around each other with base-pairing
between the strands.
Euchromatin - ✔✔✔One of the two main states in which chromatin exists within an
interphase cell. Prevalent in gene-rich area, its less compacted structure allows access
for proteins involved in transcription.
Gene - ✔✔✔Unit of heredity containing the instructions that dictate the characteristics
or phenotype of an organism; in molecular terms, a segment of DNA that directs the
production of a protein or functional RNA molecule.
Gene expression - ✔✔✔The process by which a gene makes a product that is useful to
the cell or organism by directing the synthesis of a protein or an RNA molecules with a
characteristic activity.
@ pg. 2
Molecular Cell Biology 9th Edition advanced 2025
(All Chapters)
Study guide with frequently tested questions and
answers
@ pg. 1
, Molecular cell biology
Cell cycle - ✔✔✔The orderly sequence of events by which a cell duplicates its contents
and divides into two.
Base pair - ✔✔✔Two complementary nucleotides in an RNA and a DNA molecule that
are held together by hydrogen bonds.
Chromatin - ✔✔✔Complex of DNA and proteins that makes up the chromosomes in a
eukaryotic cell.
Centromere - ✔✔✔Specialized DNA sequence that allows duplicated chromosomes to
be separated during M phase; can be seen as the constricted region of a mitotic
chromosome.
Double helix - ✔✔✔The typical structure of a DNA molecule in which the two
complementary polynucleotide strands are wound around each other with base-pairing
between the strands.
Euchromatin - ✔✔✔One of the two main states in which chromatin exists within an
interphase cell. Prevalent in gene-rich area, its less compacted structure allows access
for proteins involved in transcription.
Gene - ✔✔✔Unit of heredity containing the instructions that dictate the characteristics
or phenotype of an organism; in molecular terms, a segment of DNA that directs the
production of a protein or functional RNA molecule.
Gene expression - ✔✔✔The process by which a gene makes a product that is useful to
the cell or organism by directing the synthesis of a protein or an RNA molecules with a
characteristic activity.
@ pg. 2
