The passage given below is followed by four summaries. Choose the option that best captures the essence of the passage.
Zombie cells may contribute to age-related chronic inflammation: this finding could help scientists understand more about the aging process and why the immune system becomes less effective as we get older. Zombie or “senescent” cells are damaged cells that can no longer divide and grow like normal cells. Scientists think that these cells can contribute to chronic health problems when they accumulate in the body. In younger people, the immune system is more effective at clearing senescent cells from the body through a process called apoptosis, but as we age this process becomes less efficient. As a result, there is an accumulation of senescent cells in different organs in the body, either through increased production or reduced clearance by the immune system. The zombie cells continue to use energy though they do not divide, and often secrete chemicals that cause inflammation, which if persistent for longer periods of time can damage healthy cells leading to chronic diseases.
Aging leads to less effective apoptosis, and therefore zombie cells start to accumulate in the body, causing inflammation, which accelerates aging and leads to chronic diseases.
The passage traces a chain: with age, clearance of senescent cells by apoptosis becomes less efficient, the cells pile up, they release inflammatory chemicals, and lasting inflammation damages healthy cells and leads to chronic disease.
The first summary says the zombie cells resist apoptosis, but the passage blames the weaker clearance by the immune system, and it also drops the inflammation link.
The third summary only defines senescent cells and gives none of the cause and effect chain.
The fourth summary calls them dead cells, though the passage says they are alive and using energy, and it reverses the cause by saying they weaken the immune system.
The second summary follows the full chain of weaker apoptosis, accumulation, inflammation and chronic disease.
Hence, Aging leads to less effective apoptosis, and therefore zombie cells start to accumulate in the body, causing inflammation, which accelerates aging and leads to chronic diseases.
Similar Questions
The given sentence is missing in the paragraph below. Decide where it best fits among the options 1, 2, 3, or 4 indicated in the paragraph.
Sentence: "Everything is old-world, traditional techniques from Mexico," Ava emphasizes.
Paragraph: The sisters embrace the ways their great-grandfather built and repaired instruments. ____(1) ____. When crafting a Mexican guitarrón used in mariachi music, they use tacote wood for the top of the instrument. Once the wood is cut, they carve the neck and heel from a single block using tools like hand saws, chisels and sandpaper rather than modern power tools — and believe that this traditional method improves the tone of the instrument. ____(2) ____. Their store has a three-year waitlist for instruments that take months to create. ____(3) ____. The family's artisanship has attracted stars like Los Lobos, who own custom guitars made by all three generations of the Delgado family. ____(4) ____. For the sisters, involvement in the family business started at an early age. They each built their first instruments at age 9.
In the dynamic realm of creativity, artists often find themselves at the crossroads between drawing inspiration from diverse cultures and inadvertently crossing into the territory of cultural appropriation. Inspiration is the lifeblood of creativity, driving artists to create works that resonate across borders. The globalized nature of the modern world invites artists to draw from a vast array of cultural influences. When approached respectfully, inspiration becomes a bridge, fostering understanding and appreciation of cultural diversity. However, the line between inspiration and cultural appropriation can be thin and easily blurred. Cultural appropriation occurs when elements from a particular culture are borrowed without proper understanding, respect, or acknowledgment. This leads to the commodification of sacred symbols, the reinforcement of stereotypes, and the erasure of the cultural context from which these elements originated. It’s essential to recognize that the impact of cultural appropriation extends beyond the realm of artistic expression, influencing societal perceptions and perpetuating power imbalances.
Identify the odd sentence out and key in the number of that sentence as your answer.
Identify the odd sentence out and key in the number of that sentence as your answer.
The last paragraph of the passage refers to “middle-class, white, professional men”. Which one of the following qualities best describes the connection among them?
Study the following sets of concepts and identify the set that is conceptually closest to the concerns and arguments of the passage.
According to the passage, who or what was an “alienist”?
“Conversely, when a defendant struck officials as unlike themselves, whether by dint of disease, gender, confession, or race, the precariousness of judgments about mental state was exposed.” Which one of the following best describes the use of the word “confession” in this sentence?
According to the incentive or moral hazard argument, which one of the designs below is most consistent with the claim that some inequality can raise growth?
Which one of the options below best summarises the passage?
Important Questions from Non Grammar
- In formulating Principle VI (a), the ILC clarified the term "waging of a war of aggression" because:
- The author attributes the growing public frustration with the UN primarily to which pair of continuous failures?
- A primary point of divergence between the US Conservative position and the Secretary-General's Conservative position on security matters, according to the summary is:
- According to the critique's conclusion, the immediate, insurmountable barrier preventing the implementation of any reform, major or minor, is:
- The Secretary-General's 'Agenda for Peace' proposed a specific military capability intended to address the gap between traditional peace-keeping and full military action. This proposed unit was explicitly characterized by the summary as being:
