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nadezda [96]
3 years ago
11

What is the key organism that ensures the nitrogen cycle can run properly?

Biology
1 answer:
Zarrin [17]3 years ago
7 0

Answer:

the nitrogen fixing bacteria is an important organims in the nitrogen cycle which helps .in fixing the nitrogen into the soil  

Explanation:

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What is the world formula of photosynthesis? The chemical formula?
Allushta [10]
World formula
6CO2(gas)+12H2O(liquid)+photons------------------------->C6H12O6(aqueous)+6O2(gas)+6H2O

carbon dioxide+ water+light energy-->glucose+oxygen+water
6 0
3 years ago
The sickle-cell allele, which is recessive, causes anemia but confers resistance to malaria in individuals who possess it. Howev
masha68 [24]

Answer:

A. the heterozygote advantage

Explanation:

Heterozygote advantage is the condition where the heterozygous individual has higher relative fitness than both homozygous dominant and homozygous recessive individual. This means that the heterozygote individual has higher chances of surviving than both the homozygous counterparts. Sickle cell anemia is a recessive inherited disorder in which oxygen carrying hemoglobin has an abnormal structure. Hence, the resultant RBCs are not spherical but have crescent sickle shape. The oxygen carrying capacity of such RBCs is drastically reduced but they are unaffected by malarial parasite due to their abnormal structure.

  • A person with both the recessive genes for sickle cell would not be able to survive due to insufficient oxygen transport in body.
  • A person with both the dominant genes would be free of sickle cell anemia  but in case of malaria would not be able to survive as the normal RBCs would be hijacked by the parasite.
  • A hetrerozygote would survive both in malaria and sickle cell condition since he has enough normal RBCs for oxygen transport but also has sickle cell RBCs which are unaffected by malarial parasite.
3 0
4 years ago
Are there any parts of the human body that get oxygen directly from the air and not from the blood? Write your answer below.
Leya [2.2K]

Answer:

The cornea

Explanation:

The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air.

7 0
3 years ago
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According to the article, what is the cause of sick building syndrome and what are the advantages of this cure?
melomori [17]

Answer:

BS is caused by the increasing use of air conditioning in modern offices, leading to bacteria build-up in the ventilation systems. Using UV lights to fight SBS is effective since it is easy and cheap to install, and it could save companies money in reducing the rate of sickness in the employees.

Explanation:

6 0
3 years ago
What happens right before RNA polymerase begins to work?
Wewaii [24]
C. mRNA detaches and moves to the ribosomes.
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3 years ago
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