<span>#1) With reference to the role of oncogenes, explain how the normal controls over the cell cycle can be lost.
Answer: The way that cell cycle can be lost is by going through changes in the activity of cell cycle regulators. Cancer causes different types of mutations. There are two types of cell cycle regulators that can promote the development of cancer:
-Positive Regulators that can be over activated (become oncogenic).
-Negative Regulators (tumor suppressors) which can be inactivated.
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Explanation:
In the given question, the options are not provided in the question and neither they are found anywhere therefore based on the previous knowledge this can be answered.
Since both the prokaryotes and eukaryotes are living therefore they perform the metabolism or chemical reactions in the form of process.
Both eukaryotes and prokaryotes perform almost similar process like the cellular respiration, photosynthesis by green colored organisms, the Central dogma related process like the replication, transcription and translation.
The central dogma related processes differ in these process only in terms of the site they are performed and a few modifications which are characteristics of the eukaryotic cells.
In prokaryotes, the transcription and translation are coupled and takes place in the cytosol whereas in eukaryotes transcription in the nucleus and translation in the cytosol.
Also in eukaryotes, modifications like the splicing, alternative splicing, capping and tailing are observed which are not observed in the prokaryotes.
Answer: Outer hair cell
Explanation:
The hair cell is located in the brain and its responsible for amplification of sound. The hair cell length changes in response to stimulus. For amplification a low input is needed and the surrounding frequency must be close to basila membrane located in the inner hair cell. They can amplify low sound using their hair bubbles. The outer hair cell increase hearing sensitivity and a damage to it brings about low sensitivity.
Also, outer hair cell do not regenerate itself and a damage to it means a permanent damage.
Answer:
The heart is slightly tilted towards the left side because of the larger size of the right lung than left lung. This provides enough space for the heart to work properly and pump blood efficiently to different parts of the body. ... heart is tilted towards left not towards right
