NEET BIOLOGY

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BIOLOGY IN HUMAN WELFARE

HUMAN HEALTH AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Read these sentences from the text.“Perhaps not surprisingly, skin-our interface with the world-supports a large number of the body’s most diverse populations of bacteria. There are at least 1, 000 different species of skin bacteria, along with dozens of fungi and other microbes. Most aren’t harmful, and many protect us.”Based on this information, what is the meaning of the word “diverse”?
A
A having a lot of variety
B
B being harmful to others
C
C being helpful to others
D
D moving from one place to another
Explanation: 

Detailed explanation-1: -Support your answer with evidence from the text. example, students may identify Heliobacter pylori as a species of bacteria that helps protect people. Studies suggest that it helps prevent “asthma, allergies, gastroesophageal reflux disease, and esophageal cancer."

Detailed explanation-2: -The number of normal bacterial cells that live on the body is in the region of 100 million. This number is 10 times greater than the 10 million cells that make up the human body.

Detailed explanation-3: -The human body contains trillions of microorganisms-outnumbering human cells by 10 to 1. Because of their small size, however, microorganisms make up only about 1 to 3 percent of the body’s mass (in a 200-pound adult, that’s 2 to 6 pounds of bacteria), but play a vital role in human health.

Detailed explanation-4: -The vast majority of the bacteria reside in the colon, with previous estimates of about 1014 bacteria [2], followed by the skin, which is estimated to harbor  1012 bacteria [9].

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