Questions

Eukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell.

The most important feature to judge whether it has nucleus membrane.

And for other choices, they are the common features of eukaryote and prokaryote.

Let that something be 'x'

From the given data,

x + x/5 = 21

5x + x/5 = 21

6x = 21 x 5

=> x = 17.5

Hence, that something is x = 17.5.

Wild goats and snow leopards are found in Himalayan region. 

A Libraury. It has more number of story books in it to read.

Number of spectral lines from a state n to ground state is

                   n(n-1)/2 = 6

• One who eats too much is called as Gourmand.

• One who eats a lot is called as Gannet.

• One who eats much more than they need is called as Glutton.