Wait a second is this your last question
Answer:
The presence of organelle DNA in mitochondria and chloroplast supports the theory that mitochondria and chloroplast originated as independent prokaryotic organism.
Explanation:
- The more well documented and generally accepted theory for the origin of eukaryotic organelles is Endosymbiotic Theory. (Margulis 1970).
- Recent evidences justify that organelles have originated from the endosymbiotic association of ingested aerobic and and photosynthetic prokaryote, the precursors of mitochondria and chloroplast respectively.
- Molecular data have played an important role in supporting the xenogenous origin rather than autogenous origin of organelles.
- The idea of independent existence of mitochondria and chloroplast are: they are replicators; they carry genetic information; they have protein synthesising machinery; they have ribosome of prokaryotic type.
- The prokaryotic or bacterial origin of mitochondria and chloroplast is supported by the fact like their DNA is simple ,closed and circular with single point of origin; DNA controls the synthesis of their rRNA and tRNA etc.; They have their own ribosome; antibiotic specificity.
The answer is no cell wall. plant cells have cell walls and if animal cells had cell walls, we wouldn't be able to move as freely as we do.
Answer:
Certain photosynthetic members of the Kingdom Protista have developed a specialized structure to help them detect light. The name of this structure is eyespot
Explanation:
In euglena, which is an example of protista uses the eyespot to detect light. Members of this group possess both plant and animal characteristics
Stress would build up but not released so then when rock moves it will release a lot of energy in the earthquake
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