Edexcel AS Level Biology

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There are 7 characteristics:
• Move
• Respire
• Sensitive to
Changes
• Grow
• Reproduce
• Excrete Waste
• Nutritional
Needs
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Movement/Move
• An action by an organism or part of an
organism causing a change of position or
place.
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Respiration/Respire
• The chemical reactions that break down
nutrient molecules in living cells to release
energy
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Sensitivity/Sensitive to Changes
• The ability to detect or sense changes in
the environment (stimuli) and to make
responses.
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Growth/Grow
• A permanent increase in size and dry
mass by an increase in cell number or cell
size or both.
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Reproduction/Reproduce
• The processes that make more of the
same kind of organism
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Excretion
• The removal from organisms of toxic
materials, the waste products of
metabolism (chemical reactions in cells
including respiration) and substances in
excess of requirements.
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Nutrition/Nutritional Needs
• The taking in of
nutrients which are
organic substances
and mineral ions,
containing raw
materials or energy for
growth and tissue
repair, absorbing and
assimilating them.
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Today in Life Science November 4, 2013
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Warm-up Part 1: Use Chart with Video
Warm-up Part 2: Use Warm-up Sheet
Weeks Ahead Overview
Characteristics of Living Things Quiz
Necessities of Life Note-taking Guide IAN Page
55
 Necessities of Life Cornell Notes and HW IAN
Pages 56 and 57
A Look Ahead at the Study of Cells

Cell Structure and Function At-a-Glance
November 4th - 8th
Monday - Characteristics of Living Thing Wrap-up/Necessities of Life Introduction
Tuesday - Necessities of Life Wrap-up/Cells Intro
Wednesday - Diversity of Life Reading and Notes
Thursday - Cell Organelles Differentiated Activity
Friday - Chapter 3 Reading and Wrap-up Text Assignment
November 11th - 15th
Monday - Cell Analogy Project Day 1
Tuesday - Cell Analogy Project Day 2
Wednesday - Cell Analogy Project Day 3
Thursday - Cell Stations
Friday - Cell Stations
November 18th - November 22nd
Monday - Cell Structure and Function Exam Review (Characteristics of Living Things,
Necessities of Living Things, and Cell Parts and Functions)
Tuesday- Cell Structure and Function Exam 1 (Cell Structures and Functions)
Wednesday - Amnesty Day/Make-up Day
Thursday Edible Cell Model Project
Friday - Amnesty Day - IAN CHECK
It is pretty clear to most people, even very small
children, know that icicles are not alive. They are cold to
the touch; they don't move, except to drip or to fall to
the ground when they break; they don't reproduce. At
the opposite end of the spectrum, it is also clear that
household pets and human friends are alive, especially
when you see them run, jump, or respond to you. Those
are fairly easy examples. But what about a clock or a
seed? Are these things living or nonliving, and how can
you tell?
You know that a clock is nonliving, right? But its hands
move, it makes noise, and it responds when you turn
its dials or press its buttons. That's more lifelike than
an icicle, isn't it? And what about a seed? Even though
we're told that it holds the potential for life, it looks
about as lively as a stone. As you can see, the
distinction between living and nonliving is not always
clear-cut. Some inanimate objects have
characteristics of living organisms, while many living
organisms, on the face of it, seem utterly lifeless.
So how does one distinguish between living and
nonliving things? First of all, the scientific definition
of living includes those things that are alive or have
ever been alive -- including what's left of a tree that
died years before. Likewise, the seed, which
appears lifeless and can remain dormant for years
before finally germinating under the right
environmental conditions, qualifies as living. In
contrast, nonliving things are not alive, nor have
they ever been.
But what does it mean to be alive? According to biologists
living organisms are characterized by seven "signs of life":
1) living things have highly organized, complex structures
(CELLS); 2) living things maintain a chemical composition
that is quite different from their surroundings; 3) living
things have the capacity to take in, transform, and use
energy from the environment; 4) living things can respond
to stimuli; 5) living things have the capacity to reproduce
themselves; 6) living things grow and develop; and 7)
living things are well-suited to their environment.
Summary
•
•
•
•
•
•
•
Move
Respire
Sensitive
Growth
Reproduction
Excretion
Nutrition
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Quiz Part 2
Guess which characteristic is being
demonstrated by the following animations:
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Question 8
A. GROWTH B. MOVEMENT C. EXCRETION D. SENSITIVITY
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Question 9
A. NUTRITION B. MOVEMENT C. EXCRETION D. SENSITIVITY
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Question 10
A. NUTRITION B. MOVEMENT C. EXCRETION D. SENSITIVIYT
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Question 11
A. NUTRITION B. REPRODUCTION C. EXCRETION D. SENSITIVITY
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Question 12
A. SENSITIVITY and MOVEMENT
B. MOVEMENT and GROWTH
C. REPRODUCTION and MOVEMENT
D. MOVEMENT and RESPIRATION
Which two characteristics are shown by
this animation:
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Question
13
A. NUTRITION and EXCRETION
B. NUTRITION and GROWTH
C. NUTRITION and REPRODUCTION
D. NUTRITION and SENSITIVITY
Other than movement, which characteristics
are shown by this animation:
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Question 14
A. NUTRITION and EXCRETION
B. REPRODUCTION and GROWTH
C. GROWTH and EXCRETION
D. RESPIRATION and GROWTH
So far you should have
named a total of five
different characteristics.
However there are 7
characteristics in total.
Name the two remaining
characteristics.
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Answers:
How well did you do?
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Question 8: Excretion
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Question 9: Nutrition
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Question 10: Movement
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Question 11: Reproduction
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Question 12: Sensitivity and Movement
Which two characteristics are shown by
this animation:
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Question 13: Sensitivity and Nutrition
Other than movement, which characteristics
are shown by this animation:
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Question 14: Growth and Respiration
So far you should have
named a total of five
different characteristics.
However there are 7
characteristics in total.
Name the two remaining
characteristics.
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Cambridge IGCSE Biology
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