Question

Part B) Multiple Choice

1). In Phase _______________ of composting, metabolism is transfered to thermophiles, whose metabolic processes cause a rise to the highest compost temperatures that can act to kill harmful microbes in the compost material.

A. I B.II C.III D.IV

2). Biodiesel produced by _______________ has a high viscosity, making the production of this product potentially more viable and profitable.

A. Dunaliella B.Botryococcus C. Both of these D. None of these

3). Key metabolic process in the production of methane biofuels are:

A. Primary ferementation B. secondary fermentation C.methanogenesis D.All of these

4). According to your text book, ________________ can be used as a substrate for biofuel production.

A. lignocellulose B.sunlight C.both of these D.None of these

Answer 1

1.) In phase II of composting, metabolism is transferred to thermophiles, whose metabolicmprocessesmcause a rise to the highest compost temperatures that can act to kill harmful microbes in the compost material.

Reason- There are 4 phases of composting - the mesophilic phase, the thermophilic phase, the cooling phase and the curing phase.

2.) Biodiesel produced by Botryococcus has a high viscocity, making the production of this product potentially more viable and profitable.

Reason- The viscocity of Bot - oil is 16 times higher than diesel fuel.

3.) Key metabolic process in the production of methane biofuels is methanogenesis.

Reason- During methanogenesis, methane gas is produced.

4.) According to your text book, lignocellulose can be used as a substrate for biofuel production.