2021学年Module 5 Cloning课堂教学ppt课件

这是一份2021学年Module 5 Cloning课堂教学ppt课件，共41页。PPT课件主要包含了Module 5，Dolly，Thinking， DNA， a clone，Mendel，gene ，identical ，optional，vice 等内容，欢迎下载使用。
Vcabulary and Reading
T learn the wrds and expressins abut clning and DNA．T learn mre abut clning．
Wrk in pairs. Lk at the title f the passage and the wrds in the bx. Decide which nes yu’re likely t see.
acid bacteria embrys enzyme experience gene human tissue rganism plant psychlgical stem cell structure upbringing
Clning and DNA
动物细胞核移植和克隆动物
The relatinship between Clning and DNA.
Wrk in pairs and answer the questins.
1. DNA 2. a clne3. a stem cell4. the genetic make-up f a persn r a plant 5. Bacteria6. an enzyme
What is _______?
A transparent twisting ladder made f the fundamental cmpnent f life
an rganism which is genetically identical t anther 克隆体
3. a stem cell
a cell that can develp int every ther type f cell 干细胞
4. the genetic make-up f a persn r a plant
the particular genes that give a persn their physical characteristics
5. bacteria
very small rganisms that cause diseases 细菌
chemicals frmed in the bdy 酶
6. an enzyme
Paragraph 1(1953)
Read the passage again and find the paragraphs which describe:
Paragraphs 2, 3(take the DNA frm a single cell t create anther identical individual)
b. Hw t clne smething
a. When the structure f DNA was discvered
c. fur pssible reasns fr clning
Paragraphs 4 (as an alternative treatment fr cuples wh find it difficult t have children), 5 (t reprduce the talents f exceptinal peple), 6 (t btain a supply f stem cells), 7(t help farmers grw resistant crps)
Paragraphs 4 (a clne wuld be under unknwn psychlgical pressure), 5 (a clne may pssess new vices instead f existing virtues), 6 (embrys made frm clnes wuld be wasted which sme peple wuld find unacceptable), 7(t rely n a few clned animals r crps wuld restrict bidiversity)
d. the disadvantages f clning
Read paragraphs 1-3 and fill in the blanks.
bth parent plants have influenced the genetic make-up f the new plant
Watsn and Crick
the structure f acid DNA
Chen and Byer Watsn
a prcedure t use enzymes t unzip the DNA, t cut ut a sequence f genes, and finally t insert them int the hst cell and cmbine with its DNA
Read the text again and decide whether the fllwing statements are true (T) r false (F).1. The science f genetics was discvered by tw scientists, Watsn and Crick at Cambridge University. ( )2. Stem cells in embrys can help smene recver frm a disease, repair human tissue and s n. ( )
3. The child wh was a clne f ne f his parents wuld have psychlgical pressure thrughut his childhd. ( )
2. a pattern f chemicals within the cell f a living thing that cntrls what it is like
Accrding t the definitin, find the prper wrds.
thin enugh t be seen thrugh
transparent
3. the same r exactly alike4. be likely t cause argument r disagreement5. can be chsen freely6. bad habit r persnal quality7. can change r be changed t adapt t new needs
cntrversial
8. put int frce by rders r by the law9. useful r simple t use 10. the natural watery liquid prduced in the muth
Answer the questins abut the wrds and phrase in the bx.
cmpulsry cntradictry cntrversialfingernails fundamental cmpnenthandy pests regulatins rt transparent valid vices
1. What regulatins n clning d sme peple think shuld be cmpulsry?2. Hw d peple’s fingernails help slve crimes?
T cntrl the use f clning.
Because there is infrmatin abut smene’s DNA under their fingernails.
3. Why is taking stem cells frm embrys cntrversial?4. Hw might a prize cw r clned crps be handy?
Because the embrys might be wasted during research.
They culd resist bacteria and diseases.
5. Hw many valid arguments in favur f clning did yu read in the passage?6. Why wuld a scientist r a farmer want t resist rt r pests?
S that he can guarantee a harvest r get a bigger harvest.
7. What srt f vices might be unacceptable in a clned persn?8. If DNA is a transparent acid, can yu see thrugh it?9. If the results f tw similar experiments are cntradictry, can bth results be true?
The same as in anyne else.
10. Is a fundamental cmpnent imprtant r nt?
It is imprtant.
Wrk in pairs and discuss yur answers t the questins.
1. D yu think the advantages f clning are greater than the disadvantages?2. What’s the mst interesting use f clning described in the passage?
3. If there were n disadvantages in clning, which exceptinal persn wuld yu like t clne? Can yu say why?
1. In 1973, bichemists Chen and Byer discvered a prcedure t use enzymes – chemicals frmed in the bdy – t unzip the DNA… prcedure n. 程序, 手续, 步骤 e.g. Making a cmplaint is quite a simple prcedure. Did yu fllw the emergency prcedure when yu heard the alarm?
2. A prize cw which resist bacteria r disease, r t sw a clned crp which can resist rt r pests.
阅读下面句子，并试着归纳resist的意思及用法。1) The natin was unable t resist the invasin.2) This new paint is designed t resist heat.
resist是动词，意为：①抵抗, 抗拒(句1); ②顶住, 经受, 不受……影响(句2)
3) Lucy can't resist sweet things.4) Henry culdn't resist shwing ff his new car.resist作动词，还可译为③忍住, 抵挡(常用于否定句中, 其后常跟名词或 ____________)(句3、句4)。
【拓展】 resistant adj.  抵抗的, 有抵抗力的 resistance n.  抵抗, 反对, 抵抗力
【即学即练】翻译下面句子。1) 我忍不住把秘密告诉了我最好的朋友。  I culdn't resist telling my best friend the secret.2) 健康的饮食能帮助你的身体抵抗疾病。 A healthy diet can help yur bdy resist disease.
3. But t rely n a few clned animals r crps wuld restrict the bidiversity f the breed. rely n 依赖，依靠，指望 常用搭配: rely n sb. / sth. rely n sb. / sth. fr sth. rely n sb. / sth. t d sth.
e.g. Dn't rely n chance; rely n yurself.As babies, we rely n thers fr fd.They have t rely n the river fr their water.Can we rely n him t supprt us?These days we rely heavily n cmputers t rganise ur wrk.
【即学即练】翻译下面句子。 1) 你不能总是依赖别人的帮助。 Yu can't always rely n thers' help. 2) 我们不能指望他说实话。 We can't rely n him t tell the truth.
1. Review the wrds and expressins abut clning and DNA.2. Cllect mre infrmatin abut clning.