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Judith KINNEAR | Marjory MARTIN
NATURE OF
BIOLOGY
2
VCE UNITS 3 AND 4 FIFTH EDITION
nature of
biology
2
VCE Units 3 and 4 fifth edition
nature of
biology
2
VCE Units 3 and 4 fifth edition
Judith Kinnear
Marjory Martin
Fifth edition published 2017 by
John Wiley & Sons Australia, Ltd
42 McDougall Street, Milton, Qld 4064
First edition published 1992
Second edition published 2000
Third edition published 2006
Fourth edition published 2013
Typeset in 10.5/12 pt Utopia Std
© Judith Kinnear and Marjory Martin 1992, 2000, 2006, 2013, 2017
The moral rights of the authors have been asserted.
National Library of Australia
Cataloguing-in-Publication entry
Chapter 1 Chapter 4
viii Contents
Area of study 2 Chapter 15
Contents ix
Preface
This fifth edition of Nature of Biology Book 2 builds on the Walter and Eliza Hall Research Institute in Melbourne
previous editions that were positively received by teachers introduces students to some of the outstanding researchers
and students of biology. It has been thoroughly revised who are involved in cutting-edge research programs.
and updated, and reflects current curriculum decisions It is our hope that the range of profiles may inspire some
regarding the key knowledge and skills expected of biology readers to explore the domain of biology further through
students. their tertiary studies and become the researchers and the
This book seeks to convey a multifaceted sense of practitioners of the future, or the inspiring teachers of
biology: as a rigorous scientific discipline with explanatory future students of biology.
models that organise the living world for us in a mean- We have enjoyed writing this book and we hope that our
ingful way; as a dynamic science whose explanations are readers will also enjoy reading the text and exploring the
subject to testing and change, rather than as a fixed and visual images, and gain confidence as they grapple with
unchanging body of knowledge; as a science that impacts and master the questions associated with each chapter.
on everyday life, both at the level of the individual and at This project was greatly enhanced by the generous
a societal level. cooperation of many academic colleagues and friends.
We continue to emphasise recent developments in bio- In particular, we owe a special debt of gratitude to the
technology as exemplified by the CRISPR gene-editing following:
technique, monoclonal antibodies and an update on
genetically modified organisms (GMOs), both plant and Matthew Ames and family, Ivy and Van Steel and family, Dr
animal. We have placed emphasis on examples relevant Robyn Pickering (University of Cape Town), Dr Christophe
to Australia, including the establishment of the Australian Lasseur (European Space Agency), Christine Tomlin
Criminal Intelligence Commission (ACIC) in 2016, trends (Zoos Victoria, Healesville), Brian Versteeg (Canada),
in organ and tissue transplantation, as well as examples of Professor Dietrich Stout (Emory University), Dr Olivier
global interest such as the spread of the Zika virus. New Schwartz (Insitut Pasteur, Paris), Professor Gillian Griffiths
material in the fifth edition includes updates relating (Cambridge Instutute for Medical Research), Dr Vanessa
to continuing curriculum topics, such as hominin evol- Solomon (WEHI), Penny Fannin (WEHI), Dr Song Tan
ution, and new material that reflects curriculum changes, (Penn State University), Professor Colin Brooks (University
including the immune system’s components, mode of of Newcastle, UK), Professor Nina van Sorge (University
operation and the defects that can arise. Importantly, to Medical Centre, Utrecht), Dr Heinrich Feldmann (NIH/
provide the context for the study of the immune system, NIAID, USA), Elizabeth Fischer (NIH/NIAID, USA), Dr Jessie
we have provided coverage of the types of microbes and Maisano (University of Texas), Dave Conley (AquaBounty
agents that cause the myriad diseases against which our Technologies), Dr Kristin Friedrich (La Brea Tar Pits and
immune system provides defence. Museum), Dr Linzi Wilson-Wilde (ANZPAA NIFS), Dr
Included in each unit are examples to assist students Jessica Mazerik (NCI, Office of Cancer Genomics), Dr Kate
to understand how biological knowledge and skills are Charlton-Robb (Australian Marine Mammal Conservation
applied in a variety of settings. Throughout the book, Foundation), Steven Mileto (Monash University), Dr Alex
the history of various significant discoveries, such as the Johnson (University of Melbourne), Catherine Cavallo
hormone insulin and the Taung fossil, is outlined so that (Monash University), Sonia Sanchez (Monash University),
students may appreciate how advances in biology have Dr Dadna Hartman (Victorian Institute of Forensic
been achieved. Likewise, aspects of the development of Medicine), Professor John Paterson (University of New
key concepts, such as the germ theory and the theory of England), Professor Leigh Ackland (Deakin University),
evolution by natural selection, are described to illustrate Drew Berry (WEHI), Professor Marie-Liesse Asselin-
that theories must be based on evidence and be subject Labat (WEHI), Susie Moreton (Epworth Hospital), Shaun
to testing. The ‘Biologist at work’ profiles are intended McKenna (Creative Photography), Professor Peter Timms
to increase student awareness of vocational opportuni (University of the Sunshine Coast), Frank Oncken (Stone
ties. Updated or new profiles introduce a range of people Hill Construction Inc. VA, USA), Jonathan Franks and
working in diverse roles. In particular, the updated box on Dr Donna Stolz (University of Pittsburg).
x Preface
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eBookpLus features: studyoN features:
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students’ learning • sit past VCAA exams (Units 3 & 4) or topic tests
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to reinforce learning.
Author: H. C. McNeile
Language: English
It was the first night out on the last stage that Jim and I were sitting
talking with the skipper on the bridge. Occasionally the sharp,
hissing crackle of the wireless installation broke the silence, and
through the open door of the cabin we could see the operator
working away in his shirt sleeves.
“I guess it’s hard to begin to estimate what we sailors owe to
Marconi for that invention,” said Kelly thoughtfully. “Now that we’ve
got it, it seems almost incredible to think how we got along without
it. And what can I do for you, sir?”
An abrupt change in his tone made me look around to see the
Reverend Samuel Longfellow standing diffidently behind us. He
evidently felt that he was trespassing, for his voice was almost
apologetic.
“Is it possible, captain, to send a message from your wireless?” he
asked.
“Of course it is,” answered Kelly. “You can hand in any message
you like to the operator, and he’ll send it for you.”
“You see, I’ve never sent a message by wireless before,” said the
parson mildly, “and I wasn’t quite sure what to do. Can you get an
answer quickly?”
“Depends on whom you are sending it to and where he is.”
“He’s on a yacht somewhere in this neighborhood,” answered the
clergyman. “He is a missionary, like myself, whose health has broken
down, and a kind philanthropist is taking him for a cruise to help him
recover. I felt it would be so nice if I could speak to him, so to say—
and hear from him, perhaps, how he is getting on.”
“Quite,” agreed the skipper gravely. “Well, Mr. Longfellow, there is
nothing to prevent your speaking to him as much as you like. You
just hand in your message to the operator whenever you want to,
and he’ll send down the answer to you as soon as he receives it.”
“Oh, thank you, Captain Kelly,” said the parson gratefully. “I
suppose there’s no way of saying where I am,” he continued
hesitatingly. “I mean on shore when one sends a wire the person
who gets it can look up where you are on a map, and it makes it so
much more interesting for him.”
Jim whistled. “By Jove! It would be a nice haul for some one. Bit out
of your line, isn’t it, James—carrying specie?”
“Yes, it is,” agreed the other. “It generally goes on the bigger
boats, but there was some hitch this time. And it’s just as safe with
me as it is with them. That has made it safe.” He pointed to the
wireless operator busily sending out the parson’s message. “That has
made piracy a thing of the past. And incidentally, as you can
imagine, Jim, it’s a big feather in my cap, getting away with this
consignment. It’s going to make the trip worth six ordinary ones to
the firm, and—er—to me. And, with any luck, if things go all right, as
I’m sure they will, I have hopes that in the future it will no longer be
out of our line. We might get a share of that traffic, and I’ll be able
to buy that chicken farm in Dorsetshire earlier than I thought.”
Jim laughed. “You old humbug, James! You’ll never give up the
sea.”
The skipper sighed and stretched himself.
“Maybe not, lad; maybe not. Not till she gives me up, anyway. But
chickens are nice companionable beasts they tell me, and Dorset is
England.”
Dear Brother how lovely the gentleman who guides our ship
tells me we pass quite close about midday the day after
tomorrow will lean over railings and wave pocket handkerchief.
Ferdinand.
“My sainted aunt!” spluttered the skipper. “‘Lean over railings and
wave pocket handkerchief!’”
“I think I prefer ‘the gentleman who guides our ship,’ said Jim
gravely. “Anyway, James, I shall borrow your telescope as we come
abreast of Ferdinand. I’d just hate to miss him. Good night, old man.
You’d better have that message framed.”
It was about half an hour later that the door of my cabin opened
and Jim entered abruptly. I was lying in my bunk smoking a final
cigarette, and I looked at him in mild surprise. He was fully dressed,
though I had seen him start to take off his clothes twenty minutes
before, and he was looking grave.
“You pay attention, Dick,” he said quietly, sitting down on the
other bunk. “I had just taken off my coat when I remembered I’d
left my cigar case in a niche up on deck. I went up to get it, and just
as I was putting it in my pocket I heard my own name mentioned.
Somewhat naturally I stopped to listen. And I distinctly heard this
sentence—‘Don’t forget—you are absolutely responsible for Maitland.’
I listened for about five minutes, but I couldn’t catch anything else
except a few disconnected words here and there, such as ‘wireless’
and ‘midday.’ Then there was a general pushing back of deck chairs,
and those seven black-coated blighters trooped off to bed. They
didn’t see me; they were on the other side of the funnel—but it
made me think. You remember that remark you heard as we came
on board? Well, why the deuce is this bunch of parsons so infernally
interested in me? I don’t like it, Dick.” He looked at me hard through
his eyeglass. “Do you think they are parsons?”
“Has it occurred to you,” said Jim quietly, “that two very useful
pieces of information have been included in those two fool
messages? First, our exact position at a given time, and our course
and our speed. Secondly, the approximate time when the
convalescing curate, in the yacht belonging to the kind friend, will
impinge on that course. And the third fact—not contained in either
message, but which may possibly have a bearing on things, is that
on board this yacht there is half a million in gold, and quarter of a
million in pearls.
“Good heavens!” I muttered, staring at him foolishly.
“Mark you, Dick, I may have stumbled into a real first-class mare’s
nest. The Reverend Samuel and his pals may be all that they say
and more, but I don’t like this tender solicitude for my salvation.”
“Are you going to say anything to the skipper?” I asked.
“Yes,” he answered. “I think I shall tell James. But he’s a pig-
headed fellow, and he’ll probably be darned rude about it. I should,
if I were he. They aren’t worrying over his salvation.”
And with that he went to bed, leaving me thinking fairly acutely.
Could there be anything in it? Could it be possible that any one
would attempt piracy in the twentieth century, especially when the
ship, as the skipper had pointed out, was equipped with wireless?
The idea was ridiculous, and the next morning I went around to
Jim’s cabin to tell him so. It was empty, and there was a note lying
on the bed addressed to me. It was brief and to the point:
I am ill in bed with a sharp dose of fever. Pass the good news
on to our friend--the parson.
Jim
And the strange thing is that when the thing did occur it came with
almost as much of a shock to me as if I had had no previous
suspicions. It was the suddenness of it, I think—the suddenness and
the absolute absence of any fuss or shouting. Naturally I didn’t see
the thing in its entirety; my outlook was limited to what happened to
me and in my own vicinity.
I suppose it was about half-past eleven, and I was strolling up and
down the deck. Midday had been the time mentioned, and I was
feeling excited and restless. Mrs. Armstrong and her daughter were
seated in their usual place, and I stopped and spoke a few words to
them. Usually Mrs. Armstrong was the talker of the two—a big,
gaunt woman with yellow spectacles, but pleasant and homely. This
morning, however, the daughter answered—and her mother, who
had put on a veil in addition to the spectacles, sat silently beside her.
“Poor mother has such a headache from the glare that she has
had to put on a veil,” she said. “I hope Mr. Maitland is better.”
I murmured that he was about the same, just as two of the
parsons strolled past and I wondered why the girl gave a little laugh.
Then suddenly she sat up, with a cry of admiration.
“Oh, look at that lovely yacht!”
I swung around quickly, and there, sure enough, about a hundred
yards from us and just coming into sight around the awning, was a
small steam yacht, presumably the one from which Ferdinand was to
wave. And at that moment the shorter of the two parsons put a
revolver within an inch of my face, while the other one ran his hands
over my pockets. It was so unexpected that I gaped at him foolishly,
and even when I saw my Colt flung overboard I hardly realized that
the big holdup had begun.
Then there came a heavy thud from just above us, and I saw
Jenkins, the wireless man, pitch forward on his face half in and half
out of his cabin door. He lay there sprawling, while another of the
parsons proceeded to wreck his instruments with the iron bar which
he had used to stun the operator. Just then, with a squawk of terror
like an anguished hen, Mrs. Armstrong rose to her feet, and with her
pink parasol in one hand and her rug in the other fled toward the
bow of the ship. She looked so irresistibly funny—this large,
hysterical woman—that I couldn’t help it, I laughed. And even the
two determined-looking parsons smiled, though not for long.
Just then, with a squawk of terror like an anguished hen, Mrs. Armstrong rose
to her feet and with her pink parasol in one hand fled toward the bow
Sure enough, mounted fore and aft, and trained directly on us were
two guns that looked to me to be of about three-inch calibre, and
behind each of them stood two men.
“What’s the game anyway?” he went on excitedly, as two boats
shot away from the yacht. For the first time I noticed that the
engines had stopped and that we were lying motionless on the calm,
oily sea. But my principal thoughts were centered on Jim. Where
was he? What was he doing? Had these blackguards done away with
him, or was he lying up somewhere—hidden away? And even if he
was, what could he do? Those two guns had an unpleasant
appearance.
A bunch of armed men came pouring over the side of the ship,
and then disappeared below, only to come up again in a few minutes
carrying a number of wooden boxes, which they lowered into the
boats alongside. They worked with the efficiency of well-trained
sailors, and I found myself cursing aloud. For I knew what was
inside those boxes, and was so utterly helpless to do anything. And
yet I couldn’t help feeling a sort of unwilling admiration; the thing
was so perfectly organized. It might have been a well-rehearsed
drill, instead of a unique and gigantic piece of piracy.
I stepped back a few paces and looked up at the bridge. The
skipper and his three officers were there—covered by another of the
parsons. And the fifth member of the party was the Reverend
Samuel Longfellow. He was smiling gently to himself, and as the last
of the boxes was lowered over the side, he came to the edge of the
bridge and addressed us.
“We are now going to leave you,” he remarked suavely. “You are
all unarmed, and I wish to give you a word of advice. Should either
of the gunners on my yacht see any one move, however innocent
the reason, before we are on board, he or both of them will open
fire. So do not be tempted to have a shot at me, Captain Kelly,
because it will be the last shot you ever have. You will now join your
crew, if you please.”
In silence the skipper and his officers came down from the bridge,
and the speaker followed them. For a moment or two he stood
facing us with an ironical smile on his face.
“Your brother in the church thanks you for your little gift to his
offertory box,” he remarked. Then he turned to one of the other
parsons beside him. “Is it set?” he asked briefly.
“Yea,” said the other. “We’d better hurry. What about that woman
up there?”
“Confound the woman!” answered the Reverend Samuel. “A
pleasant journey, Captain Kelly.”
He stepped down the gangway into the second boat, and was
pulled away toward the yacht. And, feeling almost sick with rage, I
glanced at the skipper beside me. Poor devil! What he must be
feeling, I hardly dared to think. To be held up on the High Seas and
robbed of specie and pearls the first time he was carrying them was
cruel luck. And I was prepared to see anything on his face, save
what I did see. For he was staring at the bow of the ship, with a
fierce blaring excitement in his eyes, and instinctively I looked too,
though every one else was staring at the yacht.
Curiousity had overcome Mrs. Armstrong’s fright. She was kneeling in the bow
staring at the yacht, her pink parasol clutched in her hands, and tragic though
the situation was, I could not help smiling, involuntarily
And then for the first time I remembered Mrs. Armstrong. She was
cowering down with her hands over her ears—the picture of abject
terror. But now curiosity overcame her fright, and she knelt there,
staring at the yacht. Her pink parasol was clutched in her hands; and
tragic though the situation was, I could not help smiling involuntarily.
Anyway, she would have something to talk about when she got
home.
A mocking shout from the yacht made me look away again. The
scoundrel who called himself the Reverend Samuel Longfellow was
standing beside the boxes of gold and pearls which had been
stacked on the deck. He was waving his hand and bowing ironically,
with the six other blackguards beside him, when the last amazing
development took place.
Before our eyes there burst a great sheet of flame. I had a momentary glimpse
of the craft splitting in two
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