Question

1. Energy in life systems

A. Is released into the environment

B. Is consumed from the environment

C. Is transformed from one form to another

D. All of the above

2. The source of energy for chemolithotrophic microorganisms is

A. Anaerobic oxidation of organic compounds

B. Oxidation of inorganic compounds

C. Reduction of organic compounds

D. Fermentation of inorganic compounds

3. Bacteria are able to use energy sources such as

A. The chemical energy of organic compounds

B. the chemical energy of inorganic compounds

C. the energy of light

D. All of the above

4. In aerobic respiration, the final electron acceptor is

A. Hydrogen

B. Oxygen

C. Water

D. ATP

5. Which of the following are represnted by the enzymatic reaction sub-strate+ electron > product?

A. Oxidation

B. Reduction

C. Hydrolysis

D. Oxygenation

7. Oxidation of an organic substance coupled with reduction of Fe3+ is

A. Fermentation

B. Aerobic respiration

C. Anaerobic respiration

D. Lithotrophy

8. A characteristic of fermentation is that

A. Oxygen can be used for fermentation

B. There is no external acceptor of electrons

C. Nitrate can be used as the terminal electron acceptor

D. Sulfate can be reduced

9. During a reduction bioprocess

A. Electrons are lost from a substrate molecule

B. Large amounts of biologically available energy are usually obtained

C. Electrons are added to a substrate molecule

D. The substrate molecule is oxidized

10. Which of the following is true about anaerobic respiration?

A. It involves the reduction of oxygen

B. It involves the oxidation of sulfate

C. It involves the reduction of nitrate

D. It involves the oxdation of oxygen

11. How do substances change when they are reduced?

A. By the addition of an electron

B. By the loss of an electron

C. By the addition of protons

D. By the release of protons

12. Oxdiation without an external acceptor of electrons is

A. Anaerobic respiration

B. Fermentation

C. Aerobic respiration

D. Microbial respiration

15 Which of the following substances does not paricipate in production of biological energy?

A. Adenosine

B. Adenosine triphosphate

C. Adenosine diphosphate

D. Nicotine amide adenine dinucleotide

Please answer the reason

Answer 1

1. All of the above.

Explanation:

Life system or biological organisms can be considered as open system. so, energy is exchanged between living organism and their surrounding environment.

They consume the energy from environment, like green plants use solar energy to perform photosynthesis.

The energy is transformed from one form to another. like,solar energy is converted into chemical energy in form of starch.

Energy is released into the environment when organisms use stored energy to perform various metabolic activities.

2. oxidation of inorganic compounds

Explanation: chemolithotrophs are those type of bacteria that can use oxidation of inorganic compound as their source of energy.

3. All of the above

Explanation: Bactreia can use different compound as their energy source. Like solar energy in phototrophs, chemical energy of organic compound in chemoorganotrophs, chemical energy of inorganic compound in chemolithotrophs.

4. Oxygen

In aerobic respiration, electrons pass through a series of electron carrier of electron transport chain(ETC) of mitochondrial inner membrane and finally accepted by Oxygen. so, the terminal electron acceptor is oxygen.