25.2.3 Ethanol as a Possible Fuel Source

Question 1

Which of the following is not a good choice for a liquid, organic fuel?

Answer 1

Uranium

Question 2

Which of the following is a benefit to using ethanol as liquid fuel source?

Answer 2

It does not require use of energy to convert into a liquid form.

Question 3

Which of the following is not a drawback to creation of ethanol as a fuel source?

Answer 3

Ethanol can easily be created from cellulose.

Question 4

Which chemical process are involved in the creation of ethanol from plant sources?

Answer 4

All of these are involved in creation of ethanol from plant sources.

Question 5

The pathways for the conversion from glucose to ethanol (a chemical reaction shown below) occur in which of the following types of organisms?

C6H12O6 → 2C2H5OH + 2CO2

Answer 5

Yeast and bacteria

Question 6

Not all plants are ideal for use as a source of glucose for ethanol. Which of the following plants would be the least suitable for use as a source of glucose for ethanol?

Answer 6

Cactus

Question 7

Which type of biopolymer can be broken down by enzymes that are created by animals?

Answer 7

Amylose

Question 8

Which polymerized form of glucose is most abundant?

Answer 8

Cellulose

Question 9

The ultimate source of fertilizer (which can be used to enhance growth of plants as a source of ethanol) is:

Answer 9

Petroleum

Question 10

Which of the following is a type of plant that could be used as a source for ethanol that does not require much in the way of herbicides, pesticides, or fertilizers?

Answer 10

Switchgrass

Question 11

The conversion of carbon dioxide and water into glucose and oxygen occur in which of the following types of organisms?

CO2 + H2O → C6H12O6+ 6O2

Answer 11

Only plants

Question 12

Which country is already using the conversion of glucose from plant sources into ethanol as a fuel source?

Answer 12

Brazil

Question 13

Which of the following is not a hidden energy cost in the production of ethanol from plant sources?

Answer 13

None of the above

Question 14

Which of the following is an enzyme responsible for converting glucose from the polymer form into the monomer form?

Answer 14

Amylase

Question 15

Ammonia-containing fertilizers can be formed chemically through processes involving which of the following reactions?

Answer 15

All of these reaction are involved in the chemical formation of ammonia-containing compounds used in fertilizers.

Question 16

Which mammal is able to produce the enzymes which breakdown cellulose?

Answer 16

No mammals produce enzymes which can breakdown cellulose

Question 17

What classification of organism is the only one having the ability to convert cellulose to glucose?

Answer 17

Bacteria