If all cells in your body have the same DNA,how can you have different types of cells

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/07 13:56:55
If all cells in your body have the same DNA,how can you have different types of cells

If all cells in your body have the same DNA,how can you have different types of cells
If all cells in your body have the same DNA,how can you have different types of cells

If all cells in your body have the same DNA,how can you have different types of cells
As we known,all cells in our body have the same DNA,however,even if they have exactly the same DNA,why are eyes and lungs so different?The answer lies with what DNA is and how it works.
Human's DNA contains all of the information needed for making you.This information is stored in the over 30,000 human genes found in almost all your cells.Therefore,to get at the information,a gene must be turned on (expressed) and the information turned into something useful,a protein.Once made,that protein goes out into the cell and performs some set of specific tasks.For example,hemoglobin,a protein found in red blood cells,carries oxygen to cells and carbon dioxide away.
For a cell to work,1000's of these proteins must be made,each doing its particular job.Eyes and lungs are so different because different sets of proteins are made in the various eye and lung cells.In other words,in the eye,genes are turned on for seeing and the "breathing" genes are off.In lung cells,the situation is reversed.

= =、、、你自己用书查找

如果你体内所有细胞有着相同的DNA,你如何会有不同类型的细胞呢?

回答后在招人烦译成英文

If all cells in your body have the same DNA,how can you have different types of cells 英语翻译you have 2 eyes,each composed of 130 million photoreceptor cells.In each one if those cells,there are 100 trillion atoms.That's more than all the stars in the milky way galaxy.However,each atom in each cell in each eyes formed in the core you'll have all your eggs in one basket.If you don’t’ listen to me and invest all your money in this project,you'll have all your eggs in one basket.这样怎麼翻译好点 Your smile is all in all to 问几个生物题(全是英文写的)1.Cells and Genetics question:How do some cells become brain cells and others become skin cells when the DNA in ALL the cells is exactly the same?2.Why is RNA necessary to act as a messenger?Why can't the cod cross out the cells with a line 要是有图表解释更好Please put check marks in the relevant cells。Please cross out cells that are irrelevant to your cases. for each .in .语句 请赐教我这样写错在哪里?它还是照样把空白单元格错误的当成0值显示.for each c in activesheet.usedrange.cells if c.value then if cells(a,b)=cells(a,b+1) thenCells(a,b).Interior.ColorIndex = 6Cells(a,b + 英语翻译If you haven’t got the product right all your branding effort will be in vain. If you sit in your sofa and watch TV all day long,you are the so-called coach potato.coach 英语翻译A thousand times I`ve failedStill your mercy remainsAnd If I stumble againI`m caught in our graceEverlasting,Your light will shineWhen all else failsNeverending,your glory goesBeyond all fameYour will above all elseMy purpose remainsThe a 英语翻译In all metal uptake experiments,DCFs increased linearly over time for all three metals (Figs 1 and 2).Cells maintained at a higher nitrate concentration grew faster than those maintained without nitrate additions,indicating that the cells 英语翻译Frequencies cannot be reused in adjacent cells,so when a user moves from one cell to another,a new frequency must be allocated for the call.If a user moves into a cell,all of whose frequencies are currently in use,the user’s call must b If a person in your heart,in your mind,in your dreams in your eyes. please do me a fevor of translating one sentence from english to chinese!But in some animals,certain muscle cells have become so specialized as electrical generators that they do not work as muscle cells at all. 生物英语求翻译Animal cells can be made to grow in two basically different modes .most animal cells be induced to divide if they are first allowed to attach to a surface or solid substratum , while It'S all in your head. if love is always in your heart If I Were In Your Shoes 歌词