Question 1

Compared to oxidative skeletal muscle fibres, those classified as glycolytic typically have ________.

Accepted Answer

A)  a higher concentration of myoglobin 
B)  a higher density of mitochondria 
C)  a smaller diameter 
D)  less resistance to fatigue 
A)  a higher concentration of myoglobin 
B)  a higher density of mitochondria 
C)  a smaller diameter 
D)  less resistance to fatigue

Question 2

A skeletal muscle deprived of adequate ATP supplies will ________.

Accepted Answer

A)  immediately relax 
B)  enter a state where actin and myosin are unable to separate 
C)  fire many more action potentials than usual and enter a state of "rigour" 
D)  sequester all free calcium ions into the sarcoplasmic reticulum 
A)  immediately relax 
B)  enter a state where actin and myosin are unable to separate 
C)  fire many more action potentials than usual and enter a state of "rigour" 
D)  sequester all free calcium ions into the sarcoplasmic reticulum

Question 3

Most of the ATP supplies for a skeletal muscle undergoing one hour of sustained exercise come from ________.

Accepted Answer

A)  creatine phosphate 
B)  glycolysis 
C)  substrate phosphorylation 
D)  oxidative phosphorylation 
A)  creatine phosphate 
B)  glycolysis 
C)  substrate phosphorylation 
D)  oxidative phosphorylation

Question 4

Most of the chemosensory neurons arising in the nasal cavity have axonal projections that terminate in the ________.

Accepted Answer

A)  gustatory complex 
B)  olfactory bulb 
C)  occipital lobe 
D)  posterior pituitary gland 
A)  gustatory complex 
B)  olfactory bulb 
C)  occipital lobe 
D)  posterior pituitary gland

Question 5

Corneal surgery is now routinely performed to change the shape of the cornea and improve vision. This surgery is beneficial because it ________.

Accepted Answer

A)  improves the circulation of nutrients to the eye 
B)  improves the focusing of light onto the retina 
C)  decreases the amount of light entering the eye 
D)  increases the sensitivity of the photoreceptors 
A)  improves the circulation of nutrients to the eye 
B)  improves the focusing of light onto the retina 
C)  decreases the amount of light entering the eye 
D)  increases the sensitivity of the photoreceptors

Question 6

Umami perception would be stimulated by ________.

Accepted Answer

A)  chocolate milk 
B)  a slice or roast beef 
C)  acidic orange juice 
D)  salt water 
A)  chocolate milk 
B)  a slice or roast beef 
C)  acidic orange juice 
D)  salt water

Question 7

The correct sequence of sensory processing is ________.

Accepted Answer

A)  sensory adaptation → stimulus reception → sensory transduction → sensory perception 
B)  stimulus reception → sensory transduction → sensory perception → sensory adaptation 
C)  sensory perception → stimulus reception → sensory transduction → sensory adaptation 
D)  stimulus reception → sensory perception → sensory adaptation → sensory transduction 
A)  sensory adaptation → stimulus reception → sensory transduction → sensory perception 
B)  stimulus reception → sensory transduction → sensory perception → sensory adaptation 
C)  sensory perception → stimulus reception → sensory transduction → sensory adaptation 
D)  stimulus reception → sensory perception → sensory adaptation → sensory transduction

Exam 50: Sensory and Motor Mechanisms

Compared to oxidative skeletal muscle fibres, those classified as glycolytic typically have ________.

A skeletal muscle deprived of adequate ATP supplies will ________.

Most of the ATP supplies for a skeletal muscle undergoing one hour of sustained exercise come from ________.

Most of the chemosensory neurons arising in the nasal cavity have axonal projections that terminate in the ________.

Corneal surgery is now routinely performed to change the shape of the cornea and improve vision. This surgery is beneficial because it ________.

Umami perception would be stimulated by ________.

The correct sequence of sensory processing is ________.

Evolution, the Themes of Biology, and Scientific Inquiry

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Viruses

Dna Tools and Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonised Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Vascular Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signalling

Nervous Systems

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