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【纪念当年的帖子（2008）】BIOLOGY讨论发问专区
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发表于 21-11-2008 11:17 PM
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原帖由 venoms 于 21-11-2008 11:01 PM 发表 
两个都有的。。。。。。。
两个都有 ??
:rf :rf |
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发表于 22-11-2008 10:54 AM
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Inheritance那边，
有时候他会问"一个高，一个矮的plants结合"然后叫你找出offspring的ratio那种问题，
我想问一下，如果他没有注明高的parent plant是不是purebred，
酱我要用TT还是Tt? |
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发表于 23-11-2008 01:47 PM
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回复 86# ccarljun91 的帖子
我明白了.
多谢 |
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发表于 22-11-2008 11:10 AM
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回复 64# 牛奶牧师 的帖子
我也很想知道。。
不过多数不是会说homo 还是hater的吗？ |
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发表于 22-11-2008 08:47 PM
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the answer only can be written as the question required. If excess, the wrong answer will deduct the marks even the other answer is correct. |
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发表于 22-11-2008 10:50 PM
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发表于 22-11-2008 10:51 PM
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原帖由 ToriYoshida 于 22-11-2008 10:35 PM 发表 
请问个位，这些是来自什么chapter的？
Homeostasis-ability to maintain - organs help maintain / ATP molecules
Digestive System - breathing - osmoregulation in human
homeostatis - form 5 chapter 3
digestive - form 4 chapter 6 |
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发表于 22-11-2008 11:13 PM
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原帖由 ToriYoshida 于 22-11-2008 10:55 PM 发表
wat organ help maintain homeostatis ?
ATP from which chapter ?
Breathing mean respiration ?
homeostatis 是一个process involved到很多system的
excretory system是maintain homeostatis的主要system
如果说organ,那应该是kidney吧。。不过skin也会maintain
atp energy,我们一开始在chapter 2就学到
mitochondrion会convert energy to ATP form
但是真正学到是在form 4 的chap 7
breathing就是respiration啊 |
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发表于 24-11-2008 02:25 AM
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发表于 24-11-2008 04:38 PM
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回复 88# ccarljun91 的帖子
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完全没有 ==|||||||||||||||||| |
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发表于 24-11-2008 04:39 PM
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好彩我有spot到nutrition和GHE。。。 |
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发表于 24-11-2008 08:32 PM
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发表于 12-1-2009 09:30 PM
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发表于 6-1-2009 10:58 PM
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什么是osmosis?simple diffusion?active transport ?facilitate diffusion |
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发表于 7-1-2009 06:43 AM
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原帖由 calabash_heng 于 6-1-2009 10:58 PM 发表 
什么是osmosis?simple diffusion?active transport ?facilitate diffusion
osmosis 是 liquid molecule transfer from high concentration to low concentration,也就是说当一个地方少水,而旁边比较多水的时候,多水的地方会去少水的地方的process 名字就叫做osmosis....
simple diffusion 我相信form 3 你就学了,oxygen,CO2 都是simple diffusion , exchange gases ..也是和osmosis 一样,from high concentration to low concentration..
facilitate diffusion有involve到channel protein/pore protein 或者是carrier protein.
由于是有关于到protein,所以这是transport SMAll molecule such as glucose ..这个也是from high concentration to low concentration,因为如果身体没有glucose和其他重要substance就不行了.
上面那3个都是不需要用到energy 因为这是自然会发生的..很自然的..从多去少in order to reach equailibrium是很自然的现象,所以这不需要energy
然而,要用到energy的是active transport .因为active transport 是拿mineral ion,而且特别的是from low concentration to high concentration,从少去多,当然需要energy来support.
所以,这是需要mitochondria来进行.每当一看到carrier protein那里有ATP,就是说明active transport.
明白吗? |
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发表于 14-1-2009 10:19 PM
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发表于 12-1-2009 08:09 PM
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发表于 12-1-2009 10:00 PM
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发表于 12-1-2009 10:36 PM
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原帖由 XxJ@s0n幼稚鬼xX 于 12-1-2009 10:00 PM 发表
就是那個死老師說不要跟課本一樣的才慘!!!
死料啦....
GOOGLE也找不到...
只好來這裡求救....
what is the study of Biology??
Biology (from Greek βιολογία - βίος, bios, "life"; -λογία, -logia) is the study of life and a branch of the natural sciences which studies living organisms and how they interact with each other and their environment. It examines the structure, function, growth, origin, evolution, and distribution of living things. Also, it classifies and describes organisms, their functions, and how species come into existence. Five unifying principles form the foundation of modern biology: cell theory, evolution, gene theory, energy, and homeostasis.
Biology as a separate science was developed in the nineteenth century as scientists discovered that organisms shared fundamental characteristics. Biology is now a standard subject of instruction at schools and universities around the world, and over a million papers are published annually in a wide array of biology and medicine journals.
Most biological sciences are specialized disciplines. Traditionally, they are grouped by the type of organism being studied: botany, the study of plants; zoology, the study of animals; and microbiology, the study of microorganisms. The fields within biology are further divided based on the scale at which organisms are studied and the methods used to study them: biochemistry examines the fundamental chemistry of life; molecular biology studies the complex interactions of systems of biological molecules; cellular biology examines the basic building block of all life, the cell; physiology examines the physical and chemical functions of the tissues and organ systems of an organism; and ecology examines how various organisms and their environment interrelate.
直接抄wiki的啦
biology
不过坦白讲
你老师有点白痴下。。
要了解这么多，但是spm可能只会出那么1题的题目
有点多余 |
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发表于 15-1-2009 06:32 AM
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