Question 1

Essential amino acids are synthesized by:

Accepted Answer

A)  microorganisms. 
B)  humans. 
C)  plants. 
D)  A and B. 
E)  A and C. 
A)  microorganisms. 
B)  humans. 
C)  plants. 
D)  A and B. 
E)  A and C.

Question 2

The activated methyl cycle involves the production and use of:

Accepted Answer

A)  glutamine. 
B)  glycine. 
C)  heterocysteine. 
D)  homocysteine. 
E)  methanol. 
A)  glutamine. 
B)  glycine. 
C)  heterocysteine. 
D)  homocysteine. 
E)  methanol.

Question 3

Describe the effect of cumulative inhibition.

Accepted Answer

This describes a situation in which seve

Question 4

Draw homocysteine.

Accepted Answer

The molecu

Question 5

Describe the process and proteins involved in nitrogen fixation.

Accepted Answer

Electrons are provided by ferredoxin, tr

Question 6

Metabolic pathways that have alternate products are often regulated by __________________and ____________.

Accepted Answer

feedback i

Question 7

Essential amino acids differ from nonessential amino acids in that:

Accepted Answer

A)  nonessential amino acids are synthesized in simple reactions compared to many for most essential amino acids. 
B)  essential amino acids are generally synthesized directly from citric acid cycle intermediates, but nonessential amino acids are not. 
C)  microorganisms and animals cannot synthesize essential amino acids but plants can. 
D)  animals cannot synthesize essential amino acids because they have lost the ability to carry out transamination reactions. 
E)  None of the above. 
A)  nonessential amino acids are synthesized in simple reactions compared to many for most essential amino acids. 
B)  essential amino acids are generally synthesized directly from citric acid cycle intermediates, but nonessential amino acids are not. 
C)  microorganisms and animals cannot synthesize essential amino acids but plants can. 
D)  animals cannot synthesize essential amino acids because they have lost the ability to carry out transamination reactions. 
E)  None of the above.

Exam 31: Amino Acids Synthesis

Essential amino acids are synthesized by:

The activated methyl cycle involves the production and use of:

Describe the effect of cumulative inhibition.

Draw homocysteine.

Describe the process and proteins involved in nitrogen fixation.

Metabolic pathways that have alternate products are often regulated by __________________and ____________.

Essential amino acids differ from nonessential amino acids in that:

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant Dna Techniques

Filters

Metabolic pathways that have alternate products are often regulated by ______and .