Which compound can provide the energy for chemosynthesis? -carbon dioxide
-oxygen
-water
-hydrogen sulfide

Which extremophile produces enzymes used in the production of detergents?
-anaerobes
-methanogens
-acidophiles
-alkaliphiles

Which organism provides evidence that matter and energy can be cycled through an ecosystem without sunlight?
-a lanternfish on the Atlantic Ocean floor
-a bison in a North American prairie
-a lion in an African savanna
-a tree in a South American rain forest

Suppose you are an exterminator of organisms that undergo chemosynthesis. Which technique will prove most effective to eliminate the greatest number of organisms?
-remove oxygen and carbon dioxide
-remove methane and hydrogen sulfide
-block sunlight
-decrease the temperature

With liquid water underneath its icy surface, Jupiter’s moon Europa is often cited as a potential site for extraterrestrial life. What other compounds would indicate that chemosynthesis supports life on the planet?
-methane
-hydrogen peroxide
-oxygen
-glucose