Question 1

In the wobble phenomenon, the base that wobbles is found in

Accepted Answer

A)  the tRNA. 
B)  the mRNA 
C)  either the tRNA or the mRNA. 
A)  the tRNA. 
B)  the mRNA 
C)  either the tRNA or the mRNA.

Question 2

The protein which marks proteins for degradation is called:

Accepted Answer

A)  Chaperonin 
B)  Ubiquitin 
C)  Proteasomin 
D)  Apoptosin 
E)  None of these names is correct. 
A)  Chaperonin 
B)  Ubiquitin 
C)  Proteasomin 
D)  Apoptosin 
E)  None of these names is correct.

Question 3

Which of the following statements concerning the genetic code is false ?

Accepted Answer

A)  It is based on triplets. 
B)  It is non-overlapping. 
C)  Commas are used. 
D)  It is degenerate. 
A)  It is based on triplets. 
B)  It is non-overlapping. 
C)  Commas are used. 
D)  It is degenerate.

Question 4

Under certain conditions, tRNAs can bind to the standard stop codons.

Accepted Answer

A) True 
 B)False

Question 5

Specificity of aminoacyl-tRNA synthetases is always based on the anticodon.

Accepted Answer

A) True 
 B)False

Question 6

The standard free energy change for the following reaction is about zero.
Amino acid + ATP + tRNA → aminoacyl-tRNA + AMP + PPi 
The driving force for this reaction in the cell is

Accepted Answer

A)  the relatively low concentrations of the reactants 
B)  the subsequent reaction of peptide bond formation, which is energetically favorable 
C)  the subsequent hydrolysis of pyrophosphate, which releases energy 
D)  the increased resonance stability of the acyl group on aminoacyl-tRNA 
A)  the relatively low concentrations of the reactants 
B)  the subsequent reaction of peptide bond formation, which is energetically favorable 
C)  the subsequent hydrolysis of pyrophosphate, which releases energy 
D)  the increased resonance stability of the acyl group on aminoacyl-tRNA

Question 7

How many codons are possible in a system in which a sequence of three bases specifies a single amino acid?

Accepted Answer

A)  20 
B)  24 
C)  27 
D)  64 
A)  20 
B)  24 
C)  27 
D)  64

Question 8

Activation of amino acids always takes place

Accepted Answer

A)  on the ribosomes 
B)  on a ribosomal subunit 
C)  on the rough endoplasmic reticulum 
D)  in the cytoplasm 
A)  on the ribosomes 
B)  on a ribosomal subunit 
C)  on the rough endoplasmic reticulum 
D)  in the cytoplasm

Question 9

Leader sequences for protein transport to specific organelles are removed by proteases associated with the:

Accepted Answer

A)  endoplasmic reticulum 
B)  golgi apparatus 
C)  nucleus 
D)  mitochondra 
E)  none of these 
A)  endoplasmic reticulum 
B)  golgi apparatus 
C)  nucleus 
D)  mitochondra 
E)  none of these

Question 10

In bacteria, each mRNA will bind to only one ribosome at a time.

Accepted Answer

A) True 
 B)False

In the wobble phenomenon, the base that wobbles is found in

The protein which marks proteins for degradation is called:

Which of the following statements concerning the genetic code is false ?

Under certain conditions, tRNAs can bind to the standard stop codons.

Specificity of aminoacyl-tRNA synthetases is always based on the anticodon.

The standard free energy change for the following reaction is about zero. Amino acid + ATP + tRNA → aminoacyl-tRNA + AMP + PP_i The driving force for this reaction in the cell is

How many codons are possible in a system in which a sequence of three bases specifies a single amino acid?

Activation of amino acids always takes place

Leader sequences for protein transport to specific organelles are removed by proteases associated with the:

In bacteria, each mRNA will bind to only one ribosome at a time.

Biochemistry and the Organization of Cells

Water the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins Enzymes

The Behavior of Proteins Enzymes Mechanisms and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids How Structure Conveys Information

Biosynthesis of Nucleic Acids Replication

Transcription of the Genetic Code the Biosynthesis of Rna

Nucleic Acid Biotechnology Techniques

Viruses Cancer and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism Cellular Signaling

Filters

Exam 12: Protein Synthesis Translation of the Genetic Message

In the wobble phenomenon, the base that wobbles is found in

The protein which marks proteins for degradation is called:

Which of the following statements concerning the genetic code is false ?

Under certain conditions, tRNAs can bind to the standard stop codons.

Specificity of aminoacyl-tRNA synthetases is always based on the anticodon.

The standard free energy change for the following reaction is about zero. Amino acid + ATP + tRNA → aminoacyl-tRNA + AMP + PPi The driving force for this reaction in the cell is

How many codons are possible in a system in which a sequence of three bases specifies a single amino acid?

Activation of amino acids always takes place

Leader sequences for protein transport to specific organelles are removed by proteases associated with the:

In bacteria, each mRNA will bind to only one ribosome at a time.

Biochemistry and the Organization of Cells

Water the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins Enzymes

The Behavior of Proteins Enzymes Mechanisms and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids How Structure Conveys Information

Biosynthesis of Nucleic Acids Replication

Transcription of the Genetic Code the Biosynthesis of Rna

Nucleic Acid Biotechnology Techniques

Viruses Cancer and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism Cellular Signaling

Filters

The standard free energy change for the following reaction is about zero. Amino acid + ATP + tRNA → aminoacyl-tRNA + AMP + PP_i The driving force for this reaction in the cell is