Question

long Answer Questions (Answer in about 60-70 words) :
1. Describe any five methods of food preservation.
2. Why are viruses considered to be on the borderline of living and non-living?
3. Discuss any three important ways in which bacteria are useful to us. Are they harmful too?
Explain with examples.
4. Write a short note on :
(a) Antibiotics
(b) Spoilage of food
(c) Canning
(d) Commercial production of alcohol
5. How will you preserve the following food items?
(a) Peas
(b) Cereals
(c) Pickle
(d) Dry fruit
(e) Milk​

Answer 1

please mark my answer as brainliest,

1> Five method of food preservations are:

a> by adding vinager

b> by using salt as food preservative.

c> reducing the temperature or putting in fridge

2> Viruses are considered at border line of living because they don't show any living body features until they enter the host cell then they use the cell mechanics for their reproductions and to do damage to the body.

3> Three ways in which bacterias are useful to us:

a> The curd that we eat is prepared from the lactobacillus bacteria found in milk.

b> That degrade the excreta and make it compost.

c> They are used in researches in laboratory.