How is e. coli like a paramecium? a. both produce essential vitamins. b. both have a nucleoid. c. both are single celled. d. both have a contractile vacuole.

Answer is C. Both are single celled.

Escherichia coli, commonly called E. coli is a type of bacteria common in human and animal intestines. It is a unicellular, prokaryotic cell, as all bacteria are prokaryotic. It is included in the Kingdom Monera.

Paramecium is also a unicellular or single celled eukaryotic. It is classified in the phylum Ciliophora Kingdom Protista.

The answer is C) Both are single celled.

Explanation:

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

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