Question

Life science 2 thx a lot!

1. Factors that support human migration to Mars include

A. runaway climate change

B. global pandemics

C. possible nuclear war

D. possible asteroid strikes

E. all of the above

2. A key difficulty of preparing a computer system to house human brain information is trying to emulate the signaling pathways of the nervous system.

true

false

3. Loss of bone mass during aging leads to

A. osteogenesis

B. osteosarcoma

C. osteoporosis

D. loss of connective tissue

4. Signs and symptoms of aging can be slowed by

A. eating a healthy diet

B. exercising

C. caloric restriction

D. socialization

E. all of the above

5. In order for cross-species transmission to occur

A. there must be contact between the virus and host

B. the infection needs to be amplified within the host

C. variants need to be produced in the new host that allow for transfer to other humans

D. all of the above

6. The Fermi Paradox attempts to explain the likelihood of finding intelligent life in other galaxies.

true

false

7. The most basic part of our brain is the part that controls our autonomic functions, referred to as the mammalian brain.

true

false

8. In the absence of illness, high mental competence is expected to last until approximately what age

A. 80

B. 35

C. 65

D. 50

9. Aging reduces all of the following in the circulatory system except

A. white blood cells

B. hemoglobin

C. lymphocytes

10. Progeria and Werner syndrome, which both cause premature aging, are a result of

A. genetic causes

B. environmental factors

C. epigenetics

11. Caloric restriction, exercise, and a healthy diet

A. speed up the aging process

B. slow down the aging process

C. have no effect on the aging process

12. If humans live on Mars, it is hypothesized that in the next 100,000 years, humans will develop

A. eye-shine

B. smaller nostrils

C. smaller eyes

Answer 1

Ans.

1).

• During recent times, theory of colonization on Mars has increasd the interest of many public and private space agencies.
• Many reasons by these agencies have been put behind to support theory of human colonization of mars and all these reasons support a central idea - prevention of human extinction.
• These reasons include;

A. runaway climate change

B. global pandemics

C. possible nuclear war

D. possible asteroid strikes

2).

• A computer system processes information through numbers, letters, words, formulas and images.
• Thses informations are first encoded in a format which can be use such as in the form of one and zero bits.
• Such information processesing is a key difficulty for preparing a computer system to house human brain information as it has to emulate the signaling pathways of the nervous system.

3).

• Osteoporosis is a common problem in elderly people.
• Bones break easily in this condition due to loss of bone mass.
• There are also chnaces of pain due to compression fractures of vertebrae and decrease mobility.

4).

• Aging is a process of an individual attening to an old age (or becoming older).
• Process of aging can be slow down by some healthy practices such as;

A. eating a healthy diet

B. exercising

C. caloric restriction

D. socialization

5).

• Cross-species transmission, or interspecies transmission is a phenomenon where a virus after being introduced into a host body, infect that individual and then infect a new host population.
• Steps of a cross-species transmission are;

A. there must be contact between the virus and host

B. the infection needs to be amplified within the host

C. variants need to be produced in the new host that allow for transfer to other humans

6).

• The Fermi paradox is an attempt to contradict absence of alien civilizatons and high chances of their probability.
• The Fermi Paradox attempts to explain the likelihood of finding intelligent life in other galaxies.
• According to the Fermi Paradox intelligent alien life is extremely rare with short lifetime.

7).

• Hind brain is the well protected and most basic part of a human brain.
• It comprise of cerebellum, brain stem and reticular formation.
• Hind brain controls the autonomic functions such as breathing and digestion.

8).

• Brain is contantly changing and developing during whole life time.
• With increasing age many cognitive functions decline whereas many increases.
• In the absence of illness, high mental competence is expected to last until approximately age 65 years.

9).

A decline in the function of immune system is observed with increased aging.

Such alteration of immune system during aging may increase risk of infections.

Aging has considerably less effect on lymphoctes in the circulation.

10).

• Progeria and Werner syndrome is a genetic disorder which results in premature aging.
• There is a loss of function in protective repair mechanisms of DNA in this condition.

11). Caloric restriction, exercise, and a healthy diet all are an essential part of a healthy life style and may slow down the aging process.

12).

• Survival of human on Mars atmosphere wil require a modification of lifestyle.
• According to a hypothesis, if humans live on Mars in the next 100,000 years, humans will develop a smaller nostrils.