Question 1

Muscles important in maintaining posture contain a high proportion of slow oxidative (type 1) muscle fibres. Compared to other types of muscle fibres, type 1 muscle fibres

Accepted Answer

A)  fatigue easily. 
B)  have more mitochondria. 
C)  have fewer capillaries. 
D)  have low myoglobin content. 
E)  All of the above are true. 
A)  fatigue easily. 
B)  have more mitochondria. 
C)  have fewer capillaries. 
D)  have low myoglobin content. 
E)  All of the above are true.

Question 2

If you lengthen a cylindrical compartment of an organism with a hydrostatic skeleton, the compartment will

Accepted Answer

A)  increase in diameter. 
B)  decrease in volume. 
C)  increase in volume. 
D)  decrease in diameter. 
E)  have an unchanged diameter. 
A)  increase in diameter. 
B)  decrease in volume. 
C)  increase in volume. 
D)  decrease in diameter. 
E)  have an unchanged diameter.

Question 3

Sharks do not have a swim bladder, and counteract the tendency to sink by

Accepted Answer

A)  secreting gas into the body cavity to provide buoyancy. 
B)  active movement of the tail muscles to produce upward force. 
C)  adjusting body volume by taking in water. 
D)  using the pectoral fins as a hydrofoil to produce dynamic lift. 
E)  increased body fat which adds to buoyancy. 
A)  secreting gas into the body cavity to provide buoyancy. 
B)  active movement of the tail muscles to produce upward force. 
C)  adjusting body volume by taking in water. 
D)  using the pectoral fins as a hydrofoil to produce dynamic lift. 
E)  increased body fat which adds to buoyancy.

Question 4

An aeronautical engineer is struggling with the aerodynamics of a prototype aircraft and consults you for advice as to why his prototype struggles to stay airborne. His plane has a large aspect ratio and the angle of attack is 30 $\degree$. Using your knowledge of flight, what would you advise the engineer?

Accepted Answer

A)  Retain the aspect ratio, increase the angle of attack 
B)  Reduce the aspect ratio, retain the angle of attack 
C)  Reduce the aspect ratio, decrease the angle of attack 
D)  Reduce the aspect ratio, increase the angle of attack 
E)  Retain the aspect ratio, decrease the angle of attack 
A)  Retain the aspect ratio, increase the angle of attack 
B)  Reduce the aspect ratio, retain the angle of attack 
C)  Reduce the aspect ratio, decrease the angle of attack 
D)  Reduce the aspect ratio, increase the angle of attack 
E)  Retain the aspect ratio, decrease the angle of attack

Question 5

The amount of force a muscle fibre can produce is related to the

Accepted Answer

A)  diameter of the myosin filaments. 
B)  extent that the sarcomeres shorten. 
C)  density of the myofibrils. 
D)  the distance between the Z-discs. 
E)  length of the actin filaments. 
A)  diameter of the myosin filaments. 
B)  extent that the sarcomeres shorten. 
C)  density of the myofibrils. 
D)  the distance between the Z-discs. 
E)  length of the actin filaments.

Exam 30: Animal Movement

Muscles important in maintaining posture contain a high proportion of slow oxidative (type 1) muscle fibres. Compared to other types of muscle fibres, type 1 muscle fibres

If you lengthen a cylindrical compartment of an organism with a hydrostatic skeleton, the compartment will

Sharks do not have a swim bladder, and counteract the tendency to sink by

The amount of force a muscle fibre can produce is related to the

Nature of Molecules

Biomolecules

The Chemistry of Life

Functioning Cells

Movement Across Membranes

Harvesting Energy

Cells, Tissues and Signals

Cell Division

Inheritance

Genes, Chromosomes and Dna

The Genetic Code

Gene Expression

Genomes, Mutation and Cancer

Viruses

Genetic Engineering and Biotechnology

Reproduction, Growth and Development of Flowering Plants

Structure of Plants

Plant Nutrition, Transport and Adaptation to Stress

Plant Hormones and Growth Responses

Animal Reproduction

Animal Development

Homeostasis: Water, Solutes and Excretion

Gas Exchange in Animals

Circulation

Metabolism, Temperature Regulation and Environmental Stress

Animal and Human Nutrition

Innate Defences and the Immune System

Hormonal Control in Animals

Nervous Systems

Animal Behaviour

Evolving Life

Evolving Earth

Mechanisms of Evolution

Bacteria

The Protists

Plants

Fungi

Simple Animals: Sponges to Flatworms

Annelids, Molluscs, Nematodes and Arthropods

Echinoderms and Chordates

Australian Biota

Population Ecology

Living in Communities

Ecosystems

Human Impacts

Filters