science form 1 - chapter 2.3 by kelvin

8/18/2019 Science Form 1 - Chapter 2.3 By Kelvin

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SCIENCE FORM 1 - CHAPTER2.3

- Cell organisation in thehuan !o"#

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Contents

Title )ate P*

2.+ Organisation o,

ell

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2. Cell 10/3/201+

2. Tissue - -

2. Organ - -

2.10 S#ste 1/3/201+ 11


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2.+ Organisation o, ellCell - The !asi unit that a4es u5 the

!o"#. E6a5le 7 re" !loo" ell8 9hite!loo" ell. ii.

Tissue a"e u5 o, the sae t#5e o, ells

that 9or4 together to 5er,or a,untion. E6a5les7 e5ithelial tissue 8usle tissue8 !one tissue an" ner:etissue.

Organ - Ma"e u5 o, "i;erent tissues that9or4 together to 5er,or a ,untion.E6a5les 7 !rain8 e#es8 nose8 ears8

lungs8 heart an" s4in.P*3


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S#ste - Ma"e u5 o, "i;erent organsthat 9or4 together to 5er,or a

,untion. There are ten s#stes inthe huan !o"#.

E6a5les

S4eletal s#ste1. E6retor# s#ste

2. Musular s#ste

3. Res5irator# s#ste

. $loo" irulator#

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S#ste

1. )igesti:e s#ste

2. '#5hati s#ste

3. En"orine s#ste

. Ner:ous s#ste


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2. Cell

1. E:er# ell struture 5er,ors a ,untion ,or theell.

2. The ,untion o, a hloro5last is to arr# out5hotos#nthesis to a4e ,oo" ,or the 5lant.

3. Onl# ells that ontain hloro5lasts an arr#out 5hotos#nthesis. The ells in a 5lant root ,ore6a5le8 annot arr# out 5hotos#nthesis.

. The nuleus an ontrol all ati:ities o, the ell!eause it ontains hroosoes.Chroosoes arr# geneti in,oration thatontrol the ell=s ati:ities.


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• +. Foo" 5asses through the elle!rane !e,ore it enters the ell.

• . >aste aterials 5ass through theell e!rane !e,ore the# lea:e theell.

• . The ell 9all is a strong struturethat gi:es the 5lant ell a regularsha5e . The anial ell "oes not

ha:e a regular sha5e !eause it "oesnot ha:e a ell 9all.

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1. The huan !o"# is a"e u5 o, trillion o, ells.

2. There are a!out 200 t#5es o, ells in the huan !o"#.

3. Eah t#5e o, huan ell is res5onsi!le ,or "oing a s5ei? @o!,or the !o"#.

E6a5les 7

i. Fat ells - store ,at ,or the !o"#

ii. Huan s5er ell - the ale re5ro"uti:e elliii. Huan egg ell - the ,eale re5ro"uti:e ell i:. Re" !loo"

ell - arr# o6#gen to "i;erent 5arts o, the !o"#

:. >hite !loo" ell - 4ill !ateria an" 5rotet the !o"# ,ro"iseases

:i. $one ells -,or !ones that 5rotet an" su55ort the !o"#:iii. Musles ells - ,or usle tissues 9hih ena!le o:eent

6i. E5ithelial ells - @oin together to ,or the s4in that o:ers the!o"# an" lines the inner sur,ae o, the !o"#.

6. Ner:e ells - arr# assages in the ,or o, eletrial signals

i5ulsesB !et9een "i;erent 5arts o, the !o"#.

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13

Full e6erise o, Cell Organisation in thehuan !o"#


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1


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science form 1 - chapter 2.3 by kelvin

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