How many pairs of chromosomes are in a human body?

How many pairs of chromosomes are in a human body?

Human cells have 23 pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell. In addition to these, human cells have many hundreds of copies of the mitochondrial genome.

How do firefighters make water ‘wetter’?

Firefighters use a ‘wetting agent’ to make water even wetter. The chemicals reduce the surface tension of plain water so it’s easier to spread and soak into objects, which is why it’s known as “wet water.” Find out which of your favorite science “facts” are actually false.

What country does the Sahara Desert cover?

Oases support some life forms in extremely arid deserts. The Sahara covers large parts of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia, extends over 9,000,000 km² (over 3,475,000 sq mi) and it covers about 1/4 of the African continent.

Biblically speaking, what came first the chicken or the egg?

According to Genesis 1:20-22, the chicken, or “birds,” we’re created before they multiplied. Thus, the chicken came before the egg.

Who was one of the original three musketeers?

It was in this book, he said, that d’Artagnan relates his first visit to M. de Tréville, captain of the Musketeers, where in the antechamber he met three young men with the names Athos, Porthos and Aramis.

How many dots are there on a golf ball?

The dimples are usually the same size as one another, but some golf balls have several different sizes of dimple on the same ball. Any number between 300 and 500 dimples is reasonable, and 336 is a common number.

What does domo arigato mean in English?

Domo arigato means “thank you very much” in Japanese. The term was very popular in the 1980’s with the release of the Styx album Killroy Was Here and the hit song Mr Roboto.

Why is the Democratic Party symbol a donkey?

Later, cartoonist Thomas Nast used the Democratic donkey in newspaper cartoons and made the symbol famous. Nast invented another famous symbol—the Republican elephant. In a cartoon that appeared in Harper’s Weekly in 1874, Nast drew a donkey clothed in lion’s skin, scaring away all the animals at the zoo.