LIFE PROCESSES
19/4/2017
Q1. Define life processes and name them.
Ans- The different processes which are performed by living organisms to maintain their life on earth , those processes are termed as life processes.
Following are the processes-
Ans - These processes are necessary because -
Digestion - This is a vital process which helps the living organisms to obtain energy.
Respiration- It helps in exchange of gases.
Transportation- It is important because it transports food to whole body via blood .
Excretion- It is important as it helps to remove the undigested and toxic substances from the body.
HUMAN DIGESTIVE SYSTEM
Mouth- It includes-
NUTRITION IN AMOEBA
Habitat- Aquatic
Structure- Unicellular without a definite shape and is controlled by nucleus.
Mode of nutrition- Holozoic mode of nutrition
22.04.2017
Homework
Q1. Where does the dark reaction takes place in the plants?
Ans- The dark reaction takes place in the stroma .
Q2. What is grana ?
Ans- Grana are many thylakoids in the chloroplast which is a organelle present in plants.
Homework
28.04.2017
Q1. Difference between starch and sugar.
Ans- Starch- They are hundreds of sugar molecule linked together i.e it is a complex carbohydrate.
Sugar- It is a simple molecule and a fast acting carbohydrate.
Q2. What is the function of salivary amylase?
Ans- It is a enzyme responsible for breakdown of starch into carbohydrates.
Q4. What is the function of Hcl , mucus and secreted in the stomach?
Ans- The function of Hcl is -
Its purpose is to coat the passageways of the nose, throat , sinuses and keeping them from becoming dry.
-
19/4/2017
Q1. Define life processes and name them.
Ans- The different processes which are performed by living organisms to maintain their life on earth , those processes are termed as life processes.
Following are the processes-
- Ingestion
- Digestion
- Absorption
- Assimilation
- Excretion
Ans - These processes are necessary because -
Digestion - This is a vital process which helps the living organisms to obtain energy.
Respiration- It helps in exchange of gases.
Transportation- It is important because it transports food to whole body via blood .
Excretion- It is important as it helps to remove the undigested and toxic substances from the body.
HUMAN DIGESTIVE SYSTEM
Mouth- It includes-
- Teeth- They help in chewing and mastication of food.
- Tongue- Mixes the food along with saliva.
- Salivary glands- It secretes saliva.
- Types of teeth- There are 4 types of teeth-
- Molars- grinding of food
- Premolars- grinding of food
- Canines- tearing
- Incisors- biting
NUTRITION IN AMOEBA
Habitat- Aquatic
Structure- Unicellular without a definite shape and is controlled by nucleus.
Mode of nutrition- Holozoic mode of nutrition
22.04.2017
Homework
Q1. Where does the dark reaction takes place in the plants?
Ans- The dark reaction takes place in the stroma .
Q2. What is grana ?
Ans- Grana are many thylakoids in the chloroplast which is a organelle present in plants.
Homework
28.04.2017
Q1. Difference between starch and sugar.
Ans- Starch- They are hundreds of sugar molecule linked together i.e it is a complex carbohydrate.
Sugar- It is a simple molecule and a fast acting carbohydrate.
Q2. What is the function of salivary amylase?
Ans- It is a enzyme responsible for breakdown of starch into carbohydrates.
- Q3. What is the pH of mouth?
- Ans- The pH of mouth is 6.8.
Q4. What is the function of Hcl , mucus and secreted in the stomach?
Ans- The function of Hcl is -
- It kills ingested bacteria.
- It provides acidic medium for protein digestion.
- It splits nucleoproteins into nucleic acids and proteins.
Its purpose is to coat the passageways of the nose, throat , sinuses and keeping them from becoming dry.
-
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