Question

17)a) Explain the process of nutrition in amoeba.
2M
b) Why do walls of trachea do not collapse when there is less air?
1M
c) Which pancreatic enzyme is effective in digesting proteins?
IM
d) Name the muscle which regulates the exit of food from stomach to small intestine. IM
Answer this namirata1​

Answer 1

Answer:

Q1 Nutrition in an Amoeba occurs through a process called phagocytosis where the entire organism pretty much engulfs the food it plans on eating up. The mode of nutrition in amoeba is known as holozoic nutrition. It involves the ingestion, digestion and egestion of food material.

Q2In trachea , there are C shaped rings of cartilage which helps to hold them even when the air is less in it . Hence they do not collapse.

Q3Trypsin is an enzyme that helps us digest protein. In the small intestine, trypsin breaks down proteins, continuing the process of digestion that began in the stomach. It may also be referred to as a proteolytic enzyme, or proteinase. Trypsin is produced by the pancreas in an inactive form called trypsinogen.

Q4The pyloric sphincter is a band of smooth muscle at the junction between the pylorus of the stomach and the duodenum of the small intestine. It plays an important role in digestion, where it acts as a valve to controls the flow of partially digested food from the stomach to the small intestine.

Answer 2

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1)ทυτriτiσท iท αท αмσєвα σccυrs τнrσυgн α ρrσcєss cαℓℓє∂ ρнαgσcyτσsis ωнєrє τнє єทτirє σrgαทisм ρrєττy мυcн єทgυℓƒs τнє ƒσσ∂ iτ ρℓαทs σท єατiทg υρ. τнє мσ∂є σƒ ทυτriτiσท iท αмσєвα is кทσωท αs нσℓσʑσic ทυτriτiσท. iτ iทvσℓvєs τнє iทgєsτiσท, ∂igєsτiσท αท∂ єgєsτiσท σƒ ƒσσ∂ мατєriαℓ.

2)τнє τrαcнєα is sυρρσrτє∂ вy c-sнαρє∂ riทgs σƒ cαrτiℓαgє ωнicн нσℓ∂ τнєм iท ρℓαcє ωнєท τнєrє is ℓєss αir iทsi∂є iτ. ∂υє τσ τнis, τнє ωαℓℓs σƒ τrαcнєα ∂σ ทστ cσℓℓαρsє єvєท ωнєท τнєrє is α ℓiττℓє αir.

3)τryρsiท is τнє ραทcrєατic єทʑyмє ωнicн ∂igєsτs ρrστєiท τσ ƒσrм sмαℓℓєr ρєρτi∂єs αท∂ αмiทσ αci∂s.

4)τнє ρyℓσric sρнiทcτєr is α вαท∂ σƒ sмσστн мυscℓє ατ τнє jυทcτiσท вєτωєєท τнє ρyℓσrυs σƒ τнє sτσмαcн αท∂ τнє ∂υσ∂єทυм σƒ τнє sмαℓℓ iทτєsτiทє. iτ ρℓαys αท iмρσrταทτ rσℓє iท ∂igєsτiσท, ωнєrє iτ αcτs αs α vαℓvє τσ cσทτrσℓs τнє ƒℓσω σƒ ραrτiαℓℓy ∂igєsτє∂ ƒσσ∂ ƒrσм τнє sτσмαcн τσ τнє sмαℓℓ iทτєsτiทє.