COMPLETE STUDY GUIDE FOR LEHNINGER
PRINCIPLES OF BIOCHEMISTRY 8TH EDITION |
TEST BANK CHAPTERS 1–28 BY NELSON
◉ The main difference between prokaryotic and eukaryotic cells is
the existence of _______ in eukaryotes. Answer: the nucleus
◉ Which of the following organelles does not have a double
membrane?
a. mitochondrion
b. nucleus
c. endoplasmic reticulum
d. chloroplast Answer: c. endoplasmic reticulum
◉ The heat of reaction at constant pressure is ________________.
Answer: It's change in enthalpy
◉ Organelles have which three attributes? Answer: Only in
eukaryotic cells, membrane bound, have a dedicated set of tasks.
◉ The amino and carboxyl groups of amino acids react in a head-to-
tail fashion, eliminating water, and forming a covalent _______ linkage
typically referred to as a _______ bond. Answer: amide, peptide
, ◉ pH=pKa when: Answer: [A-]=[HA]
*think pH=pKa + log(4/4) --> the log(1) equals 0, so all that's left in
the equation is pH=pKa, but only when the A- and HA are the same.
◉ Electrostatic forces
a. include ionic interactions between negatively charged carboxyl
group and positively charged amino groups.
b. average about 2kJ/mol in aqeous solutions.
c. typically are directional like hydrogen bonds
d. require a precise fit like van der Waals interactions Answer: a.
include ionic interactions between negatively charge carboxyl group
and positively charged amino groups.
◉ Weak forces that create constantly forming and breaking
interactions at physiological temperatures, but cumulatively impart
stability to biological structures generated by the sum of their
collective interactions include all EXCEPT:
a. hydrogen bonds
b. van der Waals forces
c. ionic interactions
d. covalent bonds Answer: covalent bonds
PRINCIPLES OF BIOCHEMISTRY 8TH EDITION |
TEST BANK CHAPTERS 1–28 BY NELSON
◉ The main difference between prokaryotic and eukaryotic cells is
the existence of _______ in eukaryotes. Answer: the nucleus
◉ Which of the following organelles does not have a double
membrane?
a. mitochondrion
b. nucleus
c. endoplasmic reticulum
d. chloroplast Answer: c. endoplasmic reticulum
◉ The heat of reaction at constant pressure is ________________.
Answer: It's change in enthalpy
◉ Organelles have which three attributes? Answer: Only in
eukaryotic cells, membrane bound, have a dedicated set of tasks.
◉ The amino and carboxyl groups of amino acids react in a head-to-
tail fashion, eliminating water, and forming a covalent _______ linkage
typically referred to as a _______ bond. Answer: amide, peptide
, ◉ pH=pKa when: Answer: [A-]=[HA]
*think pH=pKa + log(4/4) --> the log(1) equals 0, so all that's left in
the equation is pH=pKa, but only when the A- and HA are the same.
◉ Electrostatic forces
a. include ionic interactions between negatively charged carboxyl
group and positively charged amino groups.
b. average about 2kJ/mol in aqeous solutions.
c. typically are directional like hydrogen bonds
d. require a precise fit like van der Waals interactions Answer: a.
include ionic interactions between negatively charge carboxyl group
and positively charged amino groups.
◉ Weak forces that create constantly forming and breaking
interactions at physiological temperatures, but cumulatively impart
stability to biological structures generated by the sum of their
collective interactions include all EXCEPT:
a. hydrogen bonds
b. van der Waals forces
c. ionic interactions
d. covalent bonds Answer: covalent bonds
