Lehninger Principles of
Biochemistry 7th Edition
Nelson Test Bank question
and answers
Nucleoid - ANSWER -The region in a bacterial cell where the DNA is located, not
enclosed by a membrane.
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.
Energy sources - ANSWER -Phototrophs can use carbon dioxide as a carbon source, and
chemotrophs can use carbon dioxide as an energy source.
Bacterial and archaeal cells - ANSWER -Both consist of a thin bilayer of lipid molecules
penetrated by proteins, with group-specific specializations in their cell envelope and a layer of
peptidoglycan.
Centrifugation - ANSWER -A useful method for fractionating cellular organelles.
Carbon - ANSWER -Used in living organisms due to its ability to make four bonds, form
double bonds, and create more preferred geometries when bonding.
Jacques Monod's statement - ANSWER -Suggesting that the principles of E. coli apply to
all living organisms.
Chemoautotrophs - ANSWER -Organisms that use inorganic compounds as energy
sources and CO2 as a carbon source.
Stereospecificity - ANSWER -The property of a reaction or process to produce a specific
stereoisomer.
Biochemistry 7th Edition
Nelson Test Bank question
and answers
Nucleoid - ANSWER -The region in a bacterial cell where the DNA is located, not
enclosed by a membrane.
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.
Energy sources - ANSWER -Phototrophs can use carbon dioxide as a carbon source, and
chemotrophs can use carbon dioxide as an energy source.
Bacterial and archaeal cells - ANSWER -Both consist of a thin bilayer of lipid molecules
penetrated by proteins, with group-specific specializations in their cell envelope and a layer of
peptidoglycan.
Centrifugation - ANSWER -A useful method for fractionating cellular organelles.
Carbon - ANSWER -Used in living organisms due to its ability to make four bonds, form
double bonds, and create more preferred geometries when bonding.
Jacques Monod's statement - ANSWER -Suggesting that the principles of E. coli apply to
all living organisms.
Chemoautotrophs - ANSWER -Organisms that use inorganic compounds as energy
sources and CO2 as a carbon source.
Stereospecificity - ANSWER -The property of a reaction or process to produce a specific
stereoisomer.
