AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which are two types of prokaryotic cells?
A
plant and bacteria
B
plant and animal
C
animal and bacteria
D
cyanobacteria and archaebacteria
Explanation: 

Detailed explanation-1: -Prokaryotes include Bacteria and Archaea. The photosynthetic prokaryotes include cyanobacteria that perform photosynthesis. A prokaryotic cell consists of a single membrane and therefore, all the reactions occur within the cytoplasm.

Detailed explanation-2: -Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that have a relatively simple structure.

Detailed explanation-3: -Prokaryotes are Bacteria, Cyanobacteria and Archaea. Bacteria and Cyanobacteria belong to the Domain Prokaryota, whereas Archaea have a Domain of their own. These are all single-celled organisms, although the cells may remain together after division, producing filaments or aggregations like bunches of grapes.

Detailed explanation-4: -Abstract. The archaebacteria are a group of prokaryotes which seem as distinct from the true bacteria (eubacteria) as they are from eukaryotes.

Detailed explanation-5: -Abstract. Cyanobacterial taxonomy developed in the botanical world because Cyanobacteria/Cyanophyta have traditionally been identified as algae. However, they possess a prokaryotic cell structure, and phylogenetically they belong to the Bacteria.

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