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Sliva [168]
2 years ago
9

Why is the ozone layer important ?

Biology
1 answer:
pshichka [43]2 years ago
5 0
The Ozone Layer's importance comes in its most vital role, providing a means of protection against the Sun's ultraviolet radiation which can normally kill skin cells, and cause cancer to human beings whilst preventing other lifeforms from existing. Ultra violet light also has been shown to bring DNA damage to many types of plants, so the Ozone layer is what allows all this to exist without the constant threat of ultra violet radiation causing significant harm.
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3 reasons cells need atp?
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For the vast majority of time during elongation in translation, what will you find at the p site of the ribosome?
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Describe relationship between observation and scientific theory
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37. Observation and scientific theory are both related. Because it needs hypothesis and experiment to be able to have an actual data to show. For example: If you want to know how a monggo seeds grow on a wet cotton. Then you should be preparing the needed things and perform the experiment. You need to observe to be able to get the scientific theory of how this experiment works. That’s how observation and scientific theory is related. They will always be together in science.
8 0
3 years ago
A scientist is comparing cancerous cells with noncancerous cells.
Simora [160]

The scientist should notice that the cancer cells have a <u>higher</u> rate of cell division and  have a <u>lower</u> response to inhibiting factors. Cell groups that are cancerous should  have a <u>lower</u> percent of cells in interphase than noncancerous cells.

Explanation:

The general characteristics of cancerous cells are defined by the ‘hallmarks of cancer’ like ‘enable replicative immortality, activate invasion and metastasis, resist cell death, evade growth suppressors’ etc. All these facts prove that they grow and divide at a higher rate and undergo uncontrollable mitotic cell division leading to proliferative invasion.

The cancerous cells also show low or no response to inhibiting factors like growth suppressors like p53, cyclins and other anti-tumor drugs.

The number of cancer cells in interphase is lower than noncancerous cells because interphase is a phase of cell growth, development and differentiation. Cancer cells undergo uncontrollable mitosis and more time is spent after the interphase to facilitate rapid cell division rather than growth or development.

7 0
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