Answer:
I feel as though, if pollution isn't stopped, then there will be tons of oil and trash.
Over 14 <em>billion</em> pounds of plastic trash is thrown into oceans each year.
Scientists have come to believe that the ocean will have 937 million tons of plastic and only 895 million tons of fish by 2050. The plastic just might outweigh the fish! Some scientists also believe that in around 4 billion years, the ocean might become obsolete due to global warming causing higher evaporation.
4.9 million liters of oil is spilled into the ocean each year, the ocean might turn brown, fish and ocean animals could all go extinct.
Answer:
B. The bacteria can cut the viral DNA at its specific restriction site but protect their own chromosomal DNA by modifying its bases and blocking the restriction enzyme.
Explanation:
There are two main reasons why bacteria cuts the viral DNA sequence but not its own.
1) There are specific restriction sites in the genome sequence of bacteriophage that restriction enzymes identify and target. These restriction sites are not present in the genome sequence of bacteria.
2) Even if sometimes the bacteria has a sequence resembling to bacteriophage and has the restriction site, still bacteria prevents the cleavage of its own chromosomes by methylating the bases of the restriction sites. When restriction site is methylated, bacteria just cannot chop it down that prevents it overall from degradation(please see the figure for better understanding).
Note: <em>Although option A can also somehow fit but option B is the perfect option because of the reason no 2.</em>
Hope it help!
Answer:
Steroid hormones that enter the cell activate receptors. These hormone-receptor complexes then bind HREs and influence gene expression.
Explanation:
Mechanism of action of steroid hormones is as follows:
- Steroid hormone enters cell and bind to the receptor.
- Translocation of activated receptor- ligand complex into nucleus.
- This complex then bind to another receptor on the chromatin.
- Steroid receptors form dimers.
- Act on DNA
- These hormone-receptor complexes then bind HREs and influence gene expression.
- Augmentation or Suppression of transcription.
Answer:
The correct answer is - all of the above.
Explanation:
If the cold and warm front collide the warmer air rises and colder air moves to the bottom due to the density of warm air is less than cold air which creates a front that is the boundary front of both fronts.
It forms a new front called an occluded front. The occluded front causes heavy precipitation, strong winds. and snow sometimes. In low pressures it also caused tornadoes.
Answer:Plantae and Animalia
Explanation: