Some Eukaryotic cells have internal structures that are able to use photosynthesis to convert light energy into chemical energy (as bonds in sugars). Why is this capability not found in all Eukaryotes?

Answers

Answer 1

Answer:

Answer:

The endosymbiotic event that brought chloroplast in eukaryotic cells happened after the lineage delivered.

Explanation:

The endosymbiotic theory says that the ancestral cell gains the ability of photosynthesis when it engulfed a photosynthetic bacteria and this bacteria remained in a symbiotic relationship with the ancestral cell and evolved as chloroplast in plants that can perform photosynthesis.

All the eukaryotes do not have this internal structure like chloroplast because this endosymbiotic event must be happened after the divergence of the lineage into different groups. Therefore plant cells have chloroplast and animals cell do not have.

Answer 2

Answer:

The question is incomplete as it does not have the options which are provided in the attached picture.

Answer:

Option-B

Explanation:

The theory of the endosymbiotic origin of eukaryotes proposed that the organelles like the chloroplast and mitochondria are originated when the proto-eukaryotes engulfed the prokaryotic cells.

The chloroplast was formed in some eukaryotes instead of others as the proto eukaryotes diverged into many lineages before the origin of the chloroplast in them. One of the lineages engulfed the chloroplast and become photosynthetic organism but rest of the proto eukaryotic lineage did no engulfed the bacteria and did not possess the chloroplast.

Thus, Option-B is the correct answer.

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Explain the relationship among homeostasis, defective mitochondria, and the symptoms caused by LHON.

Answers

Answer: The Leber's hereditary optic neuropathy (LHON) is caused by defective genes contained in mitochondrial DNA.

Explanation:

LHON is causes the vision loss. This occurs due to mutation in the mitochondrial DNA. The symptoms are not associated vision loss thus it is difficult to predict that which member of family was the carrier of the disease. Some people do not get completely blind. A young male is expected to develop a risk of 50% development of this disease.

PLEASE HELP TAKING TEST NOW NO LINKS PLEASE!!!!!!!!!!!!!! In an ecosystem with low biodiversity, the removal of a species will (1 point)O not affect the ecosystem because another species will take its place.
o disturb the ecosystem because another species will not be able to replace it.
o not affect the ecosystem because another species will not be able to replace it.
disturb the ecosystem because another species will take its place.

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Answer:

disturb the ecosystem because another species will not be able to replace it.

Explanation:

What grow downward into the soil to form roots

please answer fast

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Answer:

Explanation:

The primary root, or radicle, is the first organ to appear when a seed germinates. It grows downward into the soil, anchoring the seedling. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot

This is a description of a(n)

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What are not properties of enzymes

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1) THEY ARE NOT SOLID

Answer:The property which is not characteristic of enzymes is to be predicted. Concept Introduction: Enzymes are proteins. ... The important factors affecting enzyme activity are enzyme concentration, substrate concentration, temperature and pH.

Explanation: above is the explanation

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Answers

Answer:

B. oxygen and picks up electrons

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