Do simple organisms have to have one cell and do complex organisms have to Have more than one cell

A scientist observes hot water erupting from a vent in the Earth.

The genotypes for the different blood groups can be summarised as follows. Which blood types are dominant?

Mango is an example of what kind of trees?

All amino acids have a similar structure. Which component is responsible for the differences in the 20 amino acids A: the carboxlyic acid B: the R group C: the central form D: the amine group

Operons can be usesd to jointly coordinate expression of multiple proteins in prokaryotes. Briefly explain in 2-3 sentences how operons function.

In the living world, there is a great deal of genetic variation. The genetic information of dogs differs from the genetic information of cats. The genetic information of plants differs from the genetic information of bacteria.

Explain the concept of same DNA in all body tissues

What happens in meiosis I that does not occur in meiosis II?

What is the meaning of calories

Whats the difference between Phylum and Genus