Create a series of yes/no questions that will help someone looking only at the DNA to determine if a cell is eukaryotic or prokaryotic. Your key must have three questions and must come to a definite conclusion (specifically, "the cell is eukaryotic" and "the cell is prokaryotic"). Drag each question to its correct location.

Answer and Explanation:

1- Is the DNA surrounded and protected by a membrane?

a- yes4

b- no2

2- Is the DNI in contact with the cytoplasm?

c- yes3

d- no4

3- Is the DNA a unique circular rolled chromosome?

e- yes6

f- no4

4- Is the DNA chain fragmented into many chromosomes?

g- yes5

h- no6

5- Is the DNA associated with histone proteins forming the chromatin?

i- yes> "the cell is eukaryotic"

j- no> 6

6- Is the DNA associated with non-histone proteins forming a nucleoid?

k- yes> "the cell is prokaryotic"

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.