Questions

typedef struct node * treeptr

typedef struct node

{

         int data1;

         float data2;

         treeptr *left;

         treeptr *right;

}treenode;

treeptr ptr;

ptr = ( treeptr ) malloc ( sizeof ( treenode ) );

Nucleoli are present during Interphase.

Chromosomes become visible during Prophase.

Centromeres divide and sister chromatids become full-fledged chromosomes during Anaphase.

Spindle fibers attach to kinetochores during Prometaphase.

Air is said to be saturated when it contains the maximum content of water vapour.

A homogeneous mixture is also called as solution.

The term "solution" is more frequently used when a homogeneous mixture is a liquid, although it is sometimes used if the homogeneous mixture is a gas.

Another name for a solid homogeneous mixture of metals is an alloy.

DNA stands for Deoxyribo nucleic acid. It is a nucleic acid made up of monomeric unit called Nucleotide.

A nucleotide consist of -

a) Sugar - Deoxyribose in DNA ( ribose in RNA)

b) An organic base- Adenine, cytosine, guanine.

Sound waves cannot travel through a Vacuum.

A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

Here, “to reach in time” should be used. Idiom in times mean, not late. with enough time, to be able to do something