Answer:
D. Any or all of the above could be causing the problem.
Explanation:
Pollution has been said to have adverse effect on living organisms. In this question, a decrease in number of intertidal organisms has been observed. Since a major freeway runs along a stretch of the ocean shore, the most likely cause of the death of the intertidal organisms is the release of any form of toxic waste into the water body.
Oil pollutants causes death of living organisms by hindering the entrance of oxygen into the water body. It makes it difficult for oxygen, which is a requirement for life, to penetrate the water body. Hence, living organisms in the water body will suffocate and die.
Toxic wastes also causes the death of organisms when ingested in excess. Waste water causes deterioration in the oxygen content of the water body. Hence, any or all of the above options can likely cause the reduction in number of the intertidal organisms.
<h2><u>Oogenesis:
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It initiates before birth and lasts till fertilization. Oogenesis starts when oogonia which are the juvenile eggs that structure in the ovaries before birth and have chromosomes in diploid number, experience mitosis to frame essential oocytes, likewise with the diploid number.
Oogenesis continues as essential oocytes experiences the primary cell division of meiosis to shape optional oocytes with the haploid number of chromosomes. Auxiliary oocytes just experience the second meiotic cell division to frame a haploid ovum in the event that it is treated by a sperm. The one egg cell that comes from meiosis contains the vast majority of the cytoplasm, supplements, and organelles.
This inconsistent conveyance of materials produces one huge cell, and one cell with minimal more than DNA. This other cell, known as a polar body, in the long run separates. The bigger cell experiences meiosis II, indeed creating a huge cell and a polar body. The huge cell forms into the develop gamete, called an ovum.
The inconsistent conveyance of the cytoplasm during oogenesis is essential as the zygote that outcomes from preparation get the majority of its cytoplasm from the egg. So the egg needs to have much cytoplasm as could be expected.
Answer:
Cell 3
Explanation:
One of the unique main characteristics that differentiates a prokaryote from a eukaryote is the absence of presence of nucleus in their cell, and where their DNA is found.
In prokaryotic cells, nucleus is absence. The DNA of prokaryote is not found in a nucleus, rather, it is contained in a region referred to as nucleoid.
Therefore, the specimen that does not have DNA in nucleus is definitely a prokaryote.
Cell 3 is a prokaryote.
Answer: The enzyme is a catalyst that speed up the rate of the reaction.
Explanation:
The enzyme can be defined as the protein that is involved in the catalytic activity of the reaction. The shape of the enzyme is important as it determines to which substrate it binds to. The enzyme is specific to the substrate and binds to a specific kind of substrate. During the digestion process the enzyme binds to the specific substrate like protein, carbohydrates, fats, and other biomolecules present in the food to simplify the digestion process. Starch is digested into maltose by the enzyme salivary amylase in the mouth.
Ans.
Renewable energy represents energy from the renewable resources, such as wind, sunlight, waves, rain, tides, and geothermal heat, that can be naturally replenished. These sources provide clean energy as they are non-pollutant and do not emit greenhouse gases.
Fossil fuel, such as coal and natural gas form harmful greenhouse gases when burn, which contributes to global warming effect. Use of renewable energy sources, instead of fossil fuel can significantly decrease the emission of greenhouse gases and prevent change in climate. Therefore, use of renewable energy is expected to increase in future.
Thus, the correct answer is option C).
