Exams

50.003% of 99.8 ÷ 49.988 = ?

? ~= (50 x 100/100)/50

? ~= (50 x 100)/(100 x 50)

? ~= 1

RNA acts as a messenger in between the DNA and ribosome as it transforms the genetic information from the DNA and as DNA is big and can't fit into the nuclear pores. 

Alcohol is a drug.

A Book always has Pages. Without pages it can't be called as a book. A book can be either with or without preface, text or index but it can't be without a page.

Hence, A Book always has page.

A mixture is the blending of two or more dissimilar substances.

Characteristics of a Mixture:

1. It has No formula.

2. It is an impure sustance

3. They can be mixed in any ratio.

4. The properties of the mixture are the properties of its constituents.

5. Constituents can e easily seperated by physical methods.
eg: Heating, Drying, Crystallization, Distillation etc...

6. It is either homogenous or heterogenous.

A major characteristic of mixtures is that the materials do not chemically combine. Mixtures can be divided into those that are evenly distributed (homogeneous) and those that aren't (heterogeneous).

South African Chris Bertish has become the first person to cross the Atlantic Ocean on standup paddle. He made the epic 4,050-mile voyage alone at sea aboard his custom-built craft.

Cellulose is closely related to sugar and rated as a carbohydrate, which means that it is a compound of carbon, hydrogen and oxygen. The woody trunk of a tree is no more than dead cell walls.

Trunk of a tree refers to the main wooden axis of a tree that supports the branches and is supported by and directly attached to the roots. The molecule that makes it sturdy is cellulose.