(a) Describe the structure and functions of mitochondria.
माइटोकॉन्ड्रिया की संरचना तथा कार्यों का वर्णन कीजिए।
(b) Write an essay on cell division.
कोशिका विभाजन पर लेख लिखिये।
c) Describe the Mendel's Theory of inheritance.
मेण्डल के अनुवांशिक वंशागति सिद्धांत का वर्णन कीजिए।
Answers
Mitochondria Structure
Mitochondria are shaped perfectly to maximize their productivity. They are made of two membranes. The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae.
Answer:
Eight months after the arrival of Covid-19 and a nationwide shutdown, political life in Switzerland seems almost back to business. Plexiglass-protected parliamentarians met for the autumn session, demonstrations are again allowed (under conditions), and most votes and local elections are going ahead as planned.
But the reality is different for campaigners behind people’s initiatives and referendums, the two key instruments of the Swiss direct democracy system. While on paper they can go out onto the street and gather support, the pandemic is slowing them down.
“It’s definitely more difficult to collect signatures,” said one campaigner from the Communist Swiss Labour Party, canvassing in Bern last weekend for a local initiative demanding free public transport. Not only are there fewer people on the street, but social distancing rules and the added barrier of a mask means they are less keen to be approached, he said