Physical Digestion
Akopọ
Before any enzyme can work on your food, the food has to be broken into small pieces. That mechanical breaking up, by teeth, by the churning stomach and by bile splitting fat into droplets, is physical digestion. It changes the size of the food, not its chemistry, and it sets the stage for the chemical digestion that follows.
In this lesson you will see why chewing matters so much, learn the four kinds of human teeth and the layers inside a tooth, and discover how the stomach and bile each increase the surface area of food. The thread running through it all is one powerful idea: more surface area means faster enzyme action.
Awọn Afojusun
- Describe physical digestion as the breakdown of food into smaller pieces without chemical change to the food molecules
- State that physical digestion increases the surface area of food for the action of enzymes in chemical digestion
- Identify in diagrams and images the types of human teeth: incisors, canines, premolars and molars
- Describe the structure of human teeth, limited to: enamel, dentine, pulp, nerves, blood vessels and cement, and understand that teeth are embedded in bone and the gums
- Describe the functions of the types of human teeth in physical digestion of food
- Describe the function of the stomach in physical digestion
- [Supplement] Outline the role of bile in emulsifying fats and oils to increase the surface area for chemical digestion
Ẹ̀kọ́ Ohùn
Gbọ́ ẹ̀kọ́ yìí nínú áàpù
Àwòrán ọpọlọ
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Ṣí àwòrán ọpọlọ nínú áàpù
Káàdì ìrántí
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Ṣe ìdánrawò káàdì wọ̀nyí nínú áàpù
Akọ̀wé Ẹ̀kọ́
Àkọsílẹ̀ Ẹ̀kọ́ Pípé wà lórí Ohun Èlò Green Bridge
Gba ohun èlò Green Bridge CBT sórí fóònù tàbí kọ̀mpútà rẹ fún gbogbo ilé ìkàwé IGCSE: ìwé ìdánwò àtijọ́, ìlànà ìdíwọ̀n, àwòrán èrò, káàdì ìkẹ́kọ̀ọ́ àti ẹ̀kọ́ ohùn.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Physical Digestion. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Physical digestion is best described as breaking food into smaller pieces: A. by enzymes B. with a chemical change to the molecules C. without a chemical change to the molecules D. into amino acids Answer: C
- A person bites a chunk out of an apple using the flat, chisel-edged teeth at the very front of the mouth. What is the name of these teeth? A. canines B. incisors C. premolars D. molars Answer: B
- The very hard outer layer of the crown of a tooth is the: A. dentine B. enamel C. pulp D. cement Answer: B
- Which part of a tooth contains the nerves and blood vessels? A. enamel B. cement C. pulp D. dentine Answer: C
- The main importance of physical digestion is that it: A. changes food molecules chemically B. increases the surface area of food for enzymes C. absorbs nutrients D. kills bacteria Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Digestive Systems
Explain the processes of digestion and absorption
"Biology: Digestive Systems" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/34-1-digestive-systems. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Digestive System Processes
Describe the process of digestion
"Biology: Digestive System Processes" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/34-3-digestive-system-processes. Access for free at https://openstax.org/books/biology/pages/1-introduction
Àwọn àjọ mìíràn ló tẹ̀ wọ́n jáde lábẹ́ ìwé àṣẹ ṣíṣí, a sì dá wọn lọ́lá bí wọ́n ṣe béèrè. Àwọn ìjápọ̀ ń ṣí ojú òpó wọn.
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Physical Digestion? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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