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harkovskaia [24]
3 years ago
13

Can someone help me please

Biology
1 answer:
Alborosie3 years ago
4 0
It is the Digestive system :)
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If animal cells contained chlorophyll, how would animal life be different?
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Well there would no longer need plants to make air or take Carbon Dioxide, and the Carbon Dioxide would me our main meal
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Why some bacteria produce Nanoparticles when grown on trace elements?
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· As particles get smaller, their magnetic properties, particularly with regard to temperature, also diminish. However, several strains of bacteria produce magnetite – fine, uniform nanoparticles that have desirable magnetic properties. These magneto tactic bacteria use a protein to form crystalline particles about 50 nanometers in size.

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What is the cell membrane made out of
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3 years ago
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Which statement below correctly explains and gives the importance of the endosymbiotic theory?
mr_godi [17]

Answer:

The statement that best explains the endosymbiotic theory is that the inner and outer membrane of the mitochondria indicates these were once free living organisms which were taken into an early cell via endocytosis. The theory was further supported by the fact that mitochondria have their own DNA and replicate via binary fission (option B).

Explanation:

The endosymbiotic theory is due to the evolutionary biologist Lynn Margulies, who through his postulates tried to establish evidence of the origin of eukaryotic cells, by incorporating a prokaryotic cell into the interior of others.

Mitochondria -besides chloroplasts- are one of the examples that support the endosymbiotic theory.  Both mitochondria and chloroplasts have characteristics and behavior similar to that of a bacterium (prokaryote):

  • They have their own circular double-stranded DNA.
  • They have 70S ribosomes.
  • Protein synthesis capacity.
  • They have membranes that allow them to carry out their functions.
  • Their division is carried out by binary fission.

These characteristics support that some organelles were at some time independent prokaryotic cells that were incorporated into other cells, by endocytosis.

Learn more:

Importance of endosymbiotic theory brainly.com/question/583859

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3 years ago
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Protects the internal tissues of the body from potiental harm
PSYCHO15rus [73]
Integumentary system

EXPLANATION: Defends the body after it has been invaded by a microscopic organism. Integumentary system. Protects the internal tissues of the body from potential harm.
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