PRINCIPLES OF BIOCHEMISTRY 7TH
EDITION PRACTICE TEST 2026 TESTED
QUESTIONS AND CORRECT ANSWERS
◉ Eukaryotes
Answer: Organisms with cells containing a true nucleus enclosed by
a nuclear envelope.
◉ Nuclear envelope
Answer: The double membrane structure that encloses the nucleus
in eukaryotic cells.
◉ Cell dimensions
Answer: Living cells usually have lengths and diameters in the range
of 0.1 μm to 100 μm.
◉ Archaea
Answer: A group of single-celled microorganisms found growing in
extreme environments.
◉ Chemoheterotroph
, Answer: An organism that requires organic molecules for growth
and energy.
◉ Organelles
Answer: Specialized subunits within a cell, such as mitochondria,
endoplasmic reticulum, and peroxisomes.
◉ Noncovalent interaction
Answer: Interactions like hydrogen bonds, hydrophobic interactions,
ionic interactions, and van der Waals interactions that maintain
macromolecular structure.
◉ Carbon
Answer: One of the four most abundant elements in living
organisms.
◉ Tetrahedral
Answer: The geometry formed by the four covalent bonds around
carbon in methane (CH4).
◉ Proteome
Answer: The catalog of all proteins functioning in a cell.
EDITION PRACTICE TEST 2026 TESTED
QUESTIONS AND CORRECT ANSWERS
◉ Eukaryotes
Answer: Organisms with cells containing a true nucleus enclosed by
a nuclear envelope.
◉ Nuclear envelope
Answer: The double membrane structure that encloses the nucleus
in eukaryotic cells.
◉ Cell dimensions
Answer: Living cells usually have lengths and diameters in the range
of 0.1 μm to 100 μm.
◉ Archaea
Answer: A group of single-celled microorganisms found growing in
extreme environments.
◉ Chemoheterotroph
, Answer: An organism that requires organic molecules for growth
and energy.
◉ Organelles
Answer: Specialized subunits within a cell, such as mitochondria,
endoplasmic reticulum, and peroxisomes.
◉ Noncovalent interaction
Answer: Interactions like hydrogen bonds, hydrophobic interactions,
ionic interactions, and van der Waals interactions that maintain
macromolecular structure.
◉ Carbon
Answer: One of the four most abundant elements in living
organisms.
◉ Tetrahedral
Answer: The geometry formed by the four covalent bonds around
carbon in methane (CH4).
◉ Proteome
Answer: The catalog of all proteins functioning in a cell.