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PtichkaEL [24]
3 years ago
14

Halons and CFC's both

Biology
2 answers:
Alla [95]3 years ago
5 0

Answer:

The correct answer would be c. destroy ozone in the stratosphere.

CFC's (chlorofluorocarbons) and halon are the man-made chemicals which are the major contributors in the destruction or thinning of the ozone layer in the stratosphere.

These chemicals can get away into the upper atmosphere where ultraviolet rays or solar radiations break them to release bromine and chlorine atoms in the atmosphere.

These atoms react with the ozone molecules and break them apart to release oxygen.

The rate of this reaction is higher than that of natural replenishment of ozone.

This leads to the depletion or thinning of the ozone.

mestny [16]3 years ago
5 0

Answer:

letter C

Explanation:

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An organism that produces its food by photosynthesis _____.
HACTEHA [7]

Answer: The correct answer for the fill in the blank is- May be placed in the Plantae kingdom.

An organism that produces food by photosynthesis can belong to three kingdoms that are Monera ( example- cynobacteria) , Protista ( example- algae) and Plantae ( example- green plants).

Thus, it is not necessary that the organism must be placed in Plantae kingdom as it may belong to any of these three.

Organisms belonging to Animalia kingdom do not perform photosynthesis.

Thus, second option is the right answer.

7 0
3 years ago
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PSYCHO15rus [73]

Answer:

Answer explained

Explanation:

a. Overexpression of Axl receptor tyroxine kinase correlates with the decresed patient's overall survival and hence it's inhibition is under process.

AXL TKI BMS777607 treatment increased AXL protein levels after 24 h as observed by Western blot and flow cytometry analysis. Mechanistically, this inhibition-induced AXL cell surface accumulation was neither associated with epigenetic modifications, nor altered transcriptional and translational regulation. Hence this later increased the glycosylated protien abundance in kinase dead mutant. The kinase function blockaging resulted in impaired internalisation which finally incresed the level of proliferation.

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b. Mendelian disorders like cystic fibrosis results from error in the given DNA sequence which can be autosomal dominant and recessive both and also X or Y linked. Mutated gene results in the Mendelian disorders. Whereas in cancer there can be mutation or proliferation of the given cells in a specific area. In cancer cells there is 2.5 times more the mRNA present while 6.2times the DNA and hence the detection and diagnosis automatically becomes difficult as in Mendelian disorders only single sequence needs to be studied at a time .

7 0
3 years ago
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Answer:

Disease resistant traits and selective breeding.

Explanation:

Disease resistant traits in wild plants and animals are helpful if these traits are present in our plants and animals in order to maintain its high quality. We can modify both our meat and plants with the help of selective breeding of high quality plants and animals. Due to selective breeding, we can achieve the desired characteristics through modification in our plants and animals.

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Even when asymptomatic, the virus can still be actively multiplying and killing cells in the immune system that help fight pathogens. This is further explained below.

<h3>What is a virus?</h3>

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In conclusion,  It is possible for the virus to be actively reproducing and destroying immune cells even in the absence of any outward symptoms.

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2 years ago
How does understanding respiration help in maintaining a person's he health?
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