life process

Question 1

define life processes

Answer 1

which together perform this maintenance job are life processes

Question 2

define nutrition

Answer 2

taking in of food and breaking it down

Question 3

define enzymes

Answer 3

breaking down of complex food into simpler substances uses bio catalysts called enzymes.

Question 4

explain autotrophic nutrition

Answer 4

take substance from outside to inside and convert them into stpred form of energy. mostly in plants and in some bacteria like bluegreenalgae. they convert inorganic to organic. it mostly uses chlorophyll. they dont take direct food.

Question 5

define photosynthsis

Answer 5

the process by which plants make food from water and carbondioxide by using sunlight in presence of chlorophyll.
6CO2 + 6H2O —–> C6H1206 + 602

Question 6

explain hetertrophic nuritionn

Answer 6

they derive thier food from surrondings. they dont not make thier own food.
1. some organisms digest their food inside the body they r called holozoie
2. some oeganisms digest their food out side bosy by relieasing enzymes they r called saprotrophic.
3. some organisms absorb food from other organisms (host) they r called parasitic.

Question 7

explain amoeba’s life process

Answer 7

1. takes in food by pseudopodia
2. food vacoule breaks down food
3. food gets mixxed with cytoplasm
4. undigested food thrown out of the body

Question 8

explain nutrition in humans

Answer 8

1. food is taken in by mouth broken into small peices and mixed with saliva.
2. food goes down throught pharynx and oesophagus through paristalsis.
3. food goes into stomach mixes with HCl, pepsin and mucus.
4. small instestine does complete digestion. mixes with pancreatic juice and bile juice.
5. large intestine absorbtion of water and mineral from undigested food.
6. excreation of food through anus.

Question 9

tell about gland, enzymes and their functions

Answer 9

1. salivary gand - salivary amylase - starch into maltose
2. gastric gland - hydrocholoric acid - kills bacteria, pepsin - parcially digests protiens, mucus - protects inner lining
3. liver - bile juice - makes food alkaline and breaks large fat globules into smaller
4. pancrease - pancreatic juice - trypsin - protien into amino acid, lipase - fats into fatty acid, pancreatic amylase - carbohydrates into glucose.

Question 10

define pyruvate

Answer 10

breaking of 6- carbon molecule into 3-carbon molecule

Question 11

explain convertion of glucose

Answer 11

glucose converted into pyruvate in all the convertions and then pyruvate converts into other products
1. absence of oxygen - yeast => ethanol + CO2 + energy
2. lack of oxygen - muscle cell =. lactic acid + energy
3. presence of oxygen - mitochondria => CO2 + H2O + energy