在介绍自由基导致衰老的理论中,教授介绍道:free radicals cause damage to other molecules and structures within the cell,including,most significantly,to the cell’s DNA,即自由基损坏分子和细胞DNA,导致了衰老,因此B选项是正确答案。抗氧化剂的作用是使自由基稳定从而使细胞不受损害,因此并不是破坏细胞结构,也...
Why does aging occur?ANAEROBIC BACTERIAMOUSEABSCESSPanoramic radiographs of 1203 Japanese patients were examined to detect idiopathic radiopaque foci of dense bone. One hundred seventeen patients (9.7%) exhibited 134 such lesions. The majority (97%) of the opacities were found in the mandible, ...
Why does aging occur? Discuss two hypotheses on what causes the cells in our body to age. Include the scientific evidence supporting each hypothesis. Which hypothesis do you think is more likely to be correct, and why? Are these hypotheses necessarily mut ...
Why does inflation occur? Why is supply and demand important in a market economy? Why is cybercrime increasing? What limiting factors depend on population density? Name two viewpoints on population control. What are the major challenges that population aging presents to more developed countries and ...
The inability to remember your first few years of life is called infantile amnesia. But why does it happen? Comments ( 0 ) When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Why...
Fiber Also a complex carbohydrate, fiber cannot be broken down in the gastrointestinal tract and instead passes through undigested. It does give bulk to the stool and has an important role in maintaining the health of the large intestine. ...
it is objectionable because of its causal relationship with devastating outcomes for the individual, as it is one’s maiming, damage or killing. Based on that, the causal relationship between one’s duty to preserve one’s health and a self-inflicted disease must occur so that he is held ...
Consequently, the results of this study are not generalizable to other health organizations, nor to a broader population. Also, this study limited its self-selection bias; however, this might still occur. Therefore, the results of this study should be interpreted carefully. Moreover, although ...
How does hunger affect child development? How can malnutrition in the aging be prevented? Why does a loss of water decrease blood pressure? Why does hypertonic solution cause pulmonary edema? Why is the small intestine so long? Why can soil erosion lead to a malnourished population? Why are ...
Does lifespan affect the Darwinian fitness of an organism? If yes, how? What are two changes that occur in the human body during natural aging? What causes this? What are three types of evidence that support the evolutionary theory? What are shared derived traits? Give two evolutionary explan...