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The final fate of electrons in the electron transport chain is combining with _____ to form _____.
hydrogen, ATP
carbon, carbon dioxide
oxygen, water
None of these
oxygen, water
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The majority of ATP is produced by which step of cell respiration?
Krebs cycle
Formation of acetyl CoA
Glycolysis
Electron transport chain
Electron transport chain
Which of the following is anabolism?
Oxidation of amino acids
Translation
Glycolysis
Oxidation of fatty acids
Translation
An oxidation reaction
results in the loss of hydrogen atoms in most biologic systems.
adds electrons to a molecule.
increases the potential energy of a molecule.
allows conversion of ATP to ADP.
occurs in conversion of pyruvic acid into lactic acid.
results in the loss of hydrogen atoms in most biologic systems.
ATP is produced
1. in the Krebs cycle through substrate-level phosphorylation of
GTP.
2. in the electron transport chain through oxidative
phosphorylation.
3. during the series of glycolytic reactions
converting glucose to fructose 1, 6-bisphosphate.
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1 only
2 only
3 only
1 and 2 are correct
1, 2, and 3 are correct
1 and 2 are correct
The most abundant product of the reactions of the Krebs cycle is
---
Pyruvate
Carbon dioxide
GTP
Reduced coenzymes
Water
Reduced coenzymes
ADP is converted to ATP via a process called
---
oxidation.
dephosphorylation.
phosphorylation.
none of these.
phosphorylation.
Which of the following will not stimulate lipolysis?
----
Cortisol
Insulin
Epinephrine
Human growth hormone
Insulin
Acetyl CoA formed by beta oxidation of fatty acids can be used to generate ATP during
------
Glycolysis.
The Kreb’s Cycle.
Fermentation.
All of these.
The Kreb’s Cycle
Hydrolyzed amino acids can be converted into proteins via translation which uses all of the following except
-----
peroxisomes.
mRNA.
ribosomes.
tRNA.
peroxisomes
This portion of a DNA segment does not code for a protein.
----
RNA
Introns
Exons
Polyribosome
Ribosome
Introns
he following is a particular sequence of codon on mRNA: ACU. What is the corresponding anti-codon for the tRNA?
UGA
UCA
TGA
TCA
AUC
UGA
Paracrines
are secreted into the blood stream
are secreted into a duct
act on the neighboring cell
act on the cell that secreted them
act on the neighboring cell