B1a Fitness and health 1. You should be thinking about the differences between health and fitness‚ concentrating on the causes and prevention of heart disease‚ which is the most common cause of death in the UK. 2. Have ideas on encouraging a healthy lifestyle e.g. ways to reduce the risk of heart disease and high blood pressure e.g. give up smoking‚ avoid eating high levels of salt and avoid eating high levels of saturated fat. 3. Know that the risk of developing heart disease can be increased
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1 Chapter Applied Ecology WEEK 12 Applied Ecology 1 2 12.1 Human Impact on the Environment 3 4 Pattern of human population growth 5 6 7 8 9 影響人口增長的因素包括：生育率 (birth rate) 、死亡率 (death rate) 、移入 (immigration) 及移出 (emigration) 。 © 2014 Hong Kong Educational Publishing Co. 2 Getting 5** in 9 Weeks: Biology • Reasons for abrupt increase in human population after mid-17th century: – improved farming techniques‚ better storage – improved technologies – control of infectious
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Question 1 2 out of 2 points Which of the following statements about meiosis is true? Selected Answer: a. The chromosome number in the resulting cells is halved. Question 2 2 out of 2 points The mitotic spindle Selected Answer: e. is composed of two different types of microtubules. Question 3 2 out of 2 points A chromatid is Selected Answer: e. one-half of a newly replicated eukaryotic chromosome. Question 4 2
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Biology‚ the Study of Life C H AP T E R O U T LI N E Science Helps Us Understand the Natural World 1.1 Scientists use a preferred method 4 1.2 Control groups allow scientists to compare experimental results 6 THE CELL THEORY: 1 Fire Ants Have a Good Defense ire ants have a red to reddish-brown color‚ but even so‚ they most likely take their name from the ability to STING. Their stinger protrudes from the rear‚ but in a split second‚ they can grab a person’s skin with their mandibles and
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AS Biology - Unit 1 ------------------------------------------------- Metabolism Metabolism is a term to describe all reaction which is taking place within a cell and is separated into two types which are * anabolic = compounds being built up * catabolic = compounds being broken down ------------------------------------------------- Water The water molecule is a molecule which is made up from 2 hydrogen atoms and 1 oxygen atom. It is bounded by 2 covalent bonds and has is polar.
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Chapter 1: May/June 06 1 What is the resolution‚ in nanometres‚ of an electron microscope and of a light microscope? A electron microscope 0.5 light microscope 20 B 0.5 200 C 5.0 20 D 5.0 200 2 The diagram shows a drawing of an electron micrograph of a cell. Which structures are surrounded by double membranes? Golgi apparatus lysosome mitochondrion nucleus cytoplasm A ✓ ✓ ✓ ✓ ✓ B ✓ ✗ ✗ ✗ ✗ C ✗ ✗ ✓ ✓ ✗ D ✗ ✓ ✗ ✗ ✓ 3 In which animal cells would Golgi apparatus be most abundant
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Biology Midterm Review Chapter 1: Introduction to Biology Biology- the science of life; study the diversity of life‚ research diseases‚ develop technologies‚ improve agriculture and preserve the environment. Made of one or more cells (all organisms are made of one or more cells0‚ displays organization (the levels of organization in biological systems begin with atoms and molecules and increase in complexity)‚ grows and develops (growth results in an increase in mass while development results in
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It was flaming hot‚ the sand beneath my bare legs burned when it hit water. I thrived to keep my eyes open‚ but instead I drifted into my daydreams imaginations‚ and spontaneously everything was peaceful and utterly dreamy. It was more to a vision than a dream when I imagine myself in 2026‚ but within an instant I am blown away. I discover that I am the new legend in the genetic research field in the United States‚ not only that but a mother too. Consequently‚ I see an extraordinary day of
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HOMEOSTASIS BIOLOGY I BIO091 Prepared by: Nur Syakireen Bt. Ishak SCOPE •Definition and importance of homeostasis •Homeostatic organ •Negative and positive feedback mechanisms •Blood-glucose regulation •Thermoregulation •Osmoregulation DEFINITON & IMPORTANCE OF HOMEOSTASIS Homeostasis • Homeostasis: • is the steady state of physiological condition of the body. • it is the physiological processes by which organisms maintain a constant & balanced internal environment. • In achieving
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1. What are the characteristics of a living organism? 2. How do you determine the TOTAL magnification of the field of view of a microscope? 3. What is homeostasis? How is homeostasis important to the survival of an organism? How is homeostasis maintained in a human? 4. What is the difference between diffusion and osmosis? 5. Define osmosis‚ hypertonic‚ hypotonic‚ isotonic solutions 6. What happens if you have a high concentration of salt water on the outside of the egg‚ yet there is very little
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