Question 1

What visual pigment is found in rods?

Accepted Answer

A)  chlorophyll 
B)  phycocyanin 
C)  carotene 
D)  rhodopsin 
E)  anthrocyanin 
A)  chlorophyll 
B)  phycocyanin 
C)  carotene 
D)  rhodopsin 
E)  anthrocyanin

Question 2

Detection of touch includes several stimuli, and two of the key components include

Accepted Answer

A)  pressure and sharpness. 
B)  temperature and sound. 
C)  pressure and duration. 
D)  temperature and taste. 
E)  pressure and temperature. 
A)  pressure and sharpness. 
B)  temperature and sound. 
C)  pressure and duration. 
D)  temperature and taste. 
E)  pressure and temperature.

Question 3

Which photoreceptors are most closely related in humans?

Accepted Answer

A)  green and blue 
B)  green and red 
C)  red and rhodopsin 
D)  rhodopsin and green 
E)  blue and red 
A)  green and blue 
B)  green and red 
C)  red and rhodopsin 
D)  rhodopsin and green 
E)  blue and red

Question 4

In terms of sequence structure, OR family proteins are 20% identical to the ________________.

Accepted Answer

β-adrenerg

Question 5

Most odorants are

Accepted Answer

A)  mixtures of ions. 
B)  small, volatile, organic molecules. 
C)  complex salts. 
D)  small globular proteins. 
E)  large organic molecules. 
A)  mixtures of ions. 
B)  small, volatile, organic molecules. 
C)  complex salts. 
D)  small globular proteins. 
E)  large organic molecules.

Question 6

Name another stimulus (besides the basic senses) that appears to be detected by humans.

Accepted Answer

Our circadian rhythm

Question 7

How is sound converted to a biochemical signal?

Accepted Answer

As sound passes across the hair bundles

Question 8

How were genes identified for bitter tastants?

Accepted Answer

A)  A specific taste was genetically linked to a chromosome region and the DNA sequence examined for a sequence similar to 7TM receptors. 
B)  Knockout mice were used to determine the exact sequence. 
C)  A hybridization analysis of all genes expressed in taste buds with 7TM probes was obtained. 
D)  Protein purification and characterization of a family of proteins were conducted. 
E)  Taste tests were conducted with humans deficient in 7TM receptors. 
A)  A specific taste was genetically linked to a chromosome region and the DNA sequence examined for a sequence similar to 7TM receptors. 
B)  Knockout mice were used to determine the exact sequence. 
C)  A hybridization analysis of all genes expressed in taste buds with 7TM probes was obtained. 
D)  Protein purification and characterization of a family of proteins were conducted. 
E)  Taste tests were conducted with humans deficient in 7TM receptors.

Question 9

What is the reason for color-blindness in humans?

Accepted Answer

The genes for the visual pigments are ve

Exam 33: Sensory Systems

What visual pigment is found in rods?

Detection of touch includes several stimuli, and two of the key components include

Which photoreceptors are most closely related in humans?

In terms of sequence structure, OR family proteins are 20% identical to the ________________.

Most odorants are

Name another stimulus (besides the basic senses) that appears to be detected by humans.

How is sound converted to a biochemical signal?

How were genes identified for bitter tastants?

What is the reason for color-blindness in humans?

Biochemistry: an Evolving Science

Protein Composition and Structure

Exploring Proteins and Proteomes

DNA, RNA, and the Flow of Genetic Information

Exploring Genes and Genomes

Exploring Evolution and Bioinformatics

Hemoglobin: a Portrait of a Protein in Action

Enzymes: Basic Concepts and Kinetics

Oxidative Phosphorylation

Catalytic Strategies

Regulatory Strategies

Carbohydrates

Lipids and Cell Membranes

Membrane Channels and Pumps

Signal-Transduction Pathways

Metabolism: Basic Concepts and Design

Glycolysis and Gluconeogenesis

The Citric Acid Cycle

The Light Reactions of Photosynthesis

The Calvin Cycle and the Pentose Phosphate Pathway

Glycogen Metabolism

Fatty Acid Metabolism

Protein Turnover and Amino Acid Catabolism

The Biosynthesis of Amino Acids

Nucleotide Biosynthesis

Biosynthesis of Membrane Lipids and Steroids

The Integration of Metabolism

DNA Replication, Repair, and Recombination

Rna Synthesis and Processing

Protein Synthesis

The Control of Gene Expression in Prokaryotes

The Control of Gene Expression in Eukaryotes

The Immune System

Molecular Motors

Drug Development

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