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Semmy [17]
3 years ago
6

"An oxygen-rich environment would cause a mass extinction of prokaryotes."

Biology
1 answer:
Flauer [41]3 years ago
6 0

<u>Answer: </u>

"An oxygen-rich environment would cause a mass extinction of prokaryotes."  Supports current scientific theories of how life might have originated on Earth.

<u>Explanation: </u>

The reacting power of oxygen increases rigorously in an oxygen- rich environment, which leads to huge fire ignition even with the slightest spark which is generally non hazardous at all. Many prokaryotic organisms do not need oxygen as they perform anaerobic respiration. Oxygen is dangerous for some prokaryotes.  

There were some prokaryotic organisms who were giving out oxygen as waste. Such excess amount of oxygen was hazardous for the environment and hence mass extinction was required to keep a check on the excess amount of oxygen being released.  

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Choose one biogeochemical cycle and explain.
ziro4ka [17]
The carbon cycle:

The carbon cycle is the process in which carbon travels from the atmosphere into organisms and the Earth and then back into the atmosphere. Plants take carbon dioxide from the air and use it to make food. Animals then eat the food and carbon is stored in their bodies or released as CO2 through respiration.

Hope this helps :)
3 0
3 years ago
Which of the following statements about viruses is FALSE? Which of the following statements about viruses is FALSE? Viruses cont
adoni [48]

Answer:

Viruses use their own catabolic enzymes.

Explanation:

Viruses are the infective particles present in the environment which encloses their genetic material which could be wither RNA or DNA enclosed in the protein coat.

The protein coat is made of the capsomers which are arranged in the tubular structure forming capsid. The viruses do not contain the metabolic machinery of their own that is the reason that they do not have replication or transcription or translation machinery. For this they are dependent on the host organisms as they use their machinery.

Thus, the selected option is correct.

6 0
4 years ago
Is there a scientific reason why adults don't really understand their children?
Alenkinab [10]
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8 0
4 years ago
Which BEST describes the orbit of the Moon around Earth?
Solnce55 [7]
The statement that best describes the moon's orbit around the Earth is <span>c. elliptical with a period of about one month. Although its orbit is elliptical, the moon's orbit can be described as nearly circular because it has an eccentricity of 0.05. Moreover, it takes around 27.322 days for it to orbit around the Earth once.</span>
6 0
3 years ago
Plant transgenic technology is important for the introduction of genes that convey traits related to environmental stresses and
Gekata [30.6K]

The options of the given question are:

method for DNA delivery

gene construct

efficient selection strategy

tissue culture system

Answer: Tissue culture system.

Explanation:

The role of tissue culture system is not much in case of the transgenic plant. The method of DNA delivery, efficient selection strategy and gene construct are involved in the plant transformation.

But plant tissue culture is not directly involved in the plant transformation. The plant tissue culture is the collection of the techniques which is used to maintain the growth of the plant cells and so it does not plays any important role in plant transformation.

The plant transformation is the introduction of the desired characters into the plant and then the growth of transformed plant takes place in the culture medium. This has no role in the plant transformation or has less role.

8 0
3 years ago
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