Question

17. Due to Mars having 38% less gravity than Earth, muscle mass and bone density
A. would increase in Martian humans
B. decrease in Martian humans
C. remain the same in Martian humans
18. During aging, the reduction of HCL by the stomach
A. causes constipation
B. increases appetite
C. reduces the adsorption of vitamin B12
D. increases the size of stomach

27. Lack of microbes on the sterile Martian surface may
A. weaken our immune system
B. amplify our immune system
C. have no effect on our immune system

31.Warming Mars could be accomplished by
A. using PFCs
B. positioning mirrors to reflect sunlight onto the planet
C. transferring nitrogen from Venus or Titan
D. all of the above

40. The nervous system is affected by aging due to
A. loss of white matter
B. increase lag time of firing neurons
C. increased susceptibility to illness

42. Changes in heart muscle mass in Martian humans will increase the likelihood of
A. hypertension
B. heart failure
C. diabetes
D. renal failure
43. Getting to Mars could be accomplished using this method, in which one small vehicle would be utilized to descend to the surface of Mars and return up to Mars’ orbit, where it will rendezvous with another spacecraft
A. Mars Orbit Rendezvous
B. Earth-Mars Rendezvous
C. Space X
47. Since the thymus gland atrophies as aging occurs,
A. immunity increases
B. immunity decreases
C. there is no change to immunity

Answer 1

Q17:- Option B

Explanation:- Bone density and muscle mass decreases in martian humans.

18:- Option c

Explanation:- Reduced HCl in the stomach causes reduced absorption of vit B12 because low level acid promote growth of some bacteria that absorp vit b12 present in the food.

19:- Option A

Explanation:- sterile martian environment without microbes weaken our immune system since it won't detect any foreign substance hence no antibodies would be produced thst would weaken immune system over time.

31:- Option B

Explanation:- Positioning mirrors to reflect sunlight onto the planet.

40:- Option A

Explanation:- Nervous sytem is affected by aging due to loss of white matter.

42:- option

Explanation:- Heart failure.