Explain the glycolysis in detail.

1 Dietary fibre — found mainly in fruits, vegetables, whole grains and legumes — is probably best known for its ability to prevent or relieve constipation. But foods containing fibre can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes, heart disease and some types of cancer. Dietary fibre, also known as roughage or bulk, includes the parts of plant foods your body can’t digest or absorb. Unlike other food components, such as fats, proteins or carbohydrates — which your body breaks down and absorbs — fibre isn’t digested by your body. Instead, it passes relatively intact through your stomach, small intestine and colon and out of your body.
Questions and Answers :
(1) Which food items provide rich fibre content?
(2) Enlist the advantages of fibres in diet.
(3) Are fibres digested in the body?
(4) Which is the path through which fibres pass in the digestive tract?
(5) What is a roughage?

Mitochondria and Krebs cycle:

(a) Which co-enzymes are shown in the diagram?
(b) Which chemical reaction takes place in the mitochondria? Which molecules are produced in this reaction?

 

What are fatty acids? What are the different uses of fatty acids ?

How energy is formed from oxidation of carbohydrates, fats and proteins?
Correct the dagram below.


 

Which is the energy currency of the cell? Explain.

Observe the diagrams and answer the following questions.



(a) Which peculiarity do you observe in the figure of Metaphase-I of meiosis ?
(b) What is the important difference between Telophase-I and Telophase-II of meiosis?
(c) Which figure shows phenomena of crossing over?

With the help of suitable diagrams, explain the mitosis in detail.

With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.

Draw a neat diagram of the structure of chromosome and label the parts:
(a) Centromere (b) p-arm