Short answer type questions
1. Draw a diagram of the human respiratory system and label the following: a) Lungs b) Primary Bronchus c) Trachea d) Larynx
2. Name the three kinds of cells present in blood. Write one function of each of them.
3. Explain the role of the following in the process of digestion in the human body. a) Saliva b) Gastric Juice c) Trypsin
4. Differentiate between Photosynthesis and respiration.
5. Draw a diagram of human ailmentry canal starting from stomach and ending at anus. Label any six parts.
Answers
Answer:
2.Blood is made mostly of plasma, but 3 main types of blood cells circulate with the plasma:
Platelets help the blood to clot. Clotting stops the blood from flowing out of the body when a vein or artery is broken. ...
Red blood cells carry oxygen. ...
White blood cells ward off infection.
3.a. Bile- It is produced by liver helps in breaking down lipids to fatty acids (in small intestine) by a process called emulsification.
b. Lipase- It breaks down dietary fats to fatty acids and glycerol. It is secreted by pancreas in the duodenal region of the small intestine.
c. Salivary amylase- It is secreted by the salivary gland and it acts on starch present in the food and breaks it down into smaller carbohydrate molecules like maltose.
d. Trypsin- It is secreted by the pancreas It hydrolyses proteins present in food that has been incompletely or not digested by Pepsin in the stomach.
4.The main difference between photosynthesis and cellular respiration is that photosynthesis is an anabolic process, where the synthesis of organic compounds occurs, storing energy whereas cellular respiration is a catabolic process, where the stored organic compounds are utilized, producing energy.
