Question

1. About 1 in 5 solar systems outside of our solar system has an Earth-sized planet that could support life as we know it.

true

false

2. A major factor in the spread of transspecies hybrid viruses is

A. lack of vaccines against these novel viruses

B. host organisms lack antibodies against these novel pathogens

C. there is no herd immunity against novel pathogens

D. all of the above

9. The Drake Equation describes the odds of finding intelligent life elsewhere in own on galaxy.

true

false

15. Cities are often hotter than their surrounding areas because heat is trapped in concrete and asphalt, a phenomenon known as the

A. heat dessert

B. city sauna

C. urban heat island effect

D. suburban affluence

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

26.Due to the difference in ambient light on Mars

A. eyes will enlarge

B. eyes will get smaller

C. eyes will not change

Answer 1

Answer :

1)

False.

Earth is the only planet which could support life.

2)

Correct choice is D

All choices are correct.

Herd immunity is non immune individuals getting protection as most in individuals in herd are immune.

Since individual is not exposed to infection he wont develop antibodies against it unless vaccinated.

9)

Drake proposed a formula to find number of intelligent extra terrestrial population in milky way galaxy.

15)

Correct choice is C

City sauna is a TV program.

Urban heat island effect is increased heat in urban areas due to human activity.

Sub urban affluence is related to class of life and problems.

Heat dessert is about food.

17)

Correct choice is C

Mass is amount of matter a body is made of. Its independent of gravity. Density is mass/volume so it also wont change.

Weight changes.

18)

Correct choice is C

High acidity or low pH of stomach is essential for B12 absorption.

26)

Correct choice is C

Eyes will remain same.

But pupils constrict. Iris also constrict.