Question

I. Read the passage carefully.
XM
(1) Researchers around the world are studying the human brain to find out what makes it
tick. If nothing else, their findings are great conversation starters and this alone could make
you smarter. It's smart to socialise Experiments have revealed that talking with others
exercises your mind. Short-term social interactions lasting just ten minutes boosted
participants intellectual performance as much as engaging in intellectual activities," says
Oscar Yharva, a psychologist at the University of Michigan. Ybarra's research shows that
talking can improve our memory and thinking skills which might mean that having a
conversation is as helpful as doing a crossword puzzle.
(2) Yawning is cool. Researchers Andrew C.Gallup and Gordon G.Gallup Jr.say our brain
bums up to 33% of the calories we consume and generate beat. Yawning cools brain cells.
thus making them more efficient. The researchen also found that yawning increases blood
flow and helps maintain optimum levels of functioning, and they suggest we are biologically
hard-wired to yawn to stay alert and protect ourselves from danger. Use it or lose it.
Scientists at the Queensland Brain Institute (QBI) in Australia have discovered that braio
cells that aren't stimulated destroy themselves. Neuroscientist Elizabeth Coulson suggests
that this self-destruction mechanism is a factor in brain conditions such as strokes and
Alzheimer's disease. Professor Perry Bortlett, director of the QBI, says that understanding
this process allows us to devise "new mechanisms for the treatment of diseases, from
depression to dementia
On the basis of your reading of the passage, answer any eight of the following questions
by choosing the correct option:
1. Yawning cools us by:
(a) Making our memories sharp
(b) Cooling our brain cells
(c) Increasing blood flow
(d) Protecting the cells
2 Yawning also belps us:
(a) sleep well
(b) Stay alen
(c) Not feel bored
(d) Stay healthy
3. Talking can improve
(a) Memory
(b) Discuses
c) Thinking skills
(d) Both (a) and (b)
What percentage(s) of calories does our brain burn?​

Answer 1

1 .(b) Cooling our brain cells 2.(d) Stay healthy 3(c)Thinking skills

Answer 2

Answer:

what is the impact of cooler brain cells