B.6 Biochemistry and the environment

Calculate the BMF if a $120 \mathrm{kg}$ shark consumes $1000$ mackerel in one year. Each mackerel weighs $1 \mathrm{kg}$ on average. The ${\left[\mathrm{X}\right]}_{\mathrm{mackerel}}=0.3 \mathrm{\mu g} \mathrm{X}$ per $\mathrm{kg}$ body weight. Assume chemical $\mathrm{X}$ remains in the shark’s body for two years.

Calculate the BMF if a $120 \mathrm{kg}$ shark consumes $1000$ mackerel in one year. Each mackerel weighs $1 \mathrm{kg}$ on average. The ${\left[\mathrm{X}\right]}_{\mathrm{mackerel}}=0.3 \mathrm{\mu g} \mathrm{X}$ per $\mathrm{kg}$ body weight. Assume chemical $\mathrm{X}$ remains in the shark’s body for two years.

Calculate the BMF if a $120 \mathrm{kg}$ shark consumes $1000$ mackerel in one year. Each mackerel weighs $1 \mathrm{kg}$ on average. The ${\left[\mathrm{X}\right]}_{\mathrm{mackerel}}=0.3 \mathrm{\mu g} \mathrm{X}$ per $\mathrm{kg}$ body weight. Assume chemical $\mathrm{X}$ remains in the shark’s body for two years.

Explain how the inclusion of carbohydrates in plastics makes them biodegradable.

Explain how the inclusion of carbohydrates in plastics makes them biodegradable.

Explain how the inclusion of carbohydrates in plastics makes them biodegradable.

Explain why sharks and swordfish sometimes contain high concentrations of mercury and polychlorinated biphenyls (PCBs).

Explain why sharks and swordfish sometimes contain high concentrations of mercury and polychlorinated biphenyls (PCBs).

Explain why sharks and swordfish sometimes contain high concentrations of mercury and polychlorinated biphenyls (PCBs).

Suggest two reasons why oil decomposes faster at the surface of the ocean than at greater depth.

Suggest two reasons why oil decomposes faster at the surface of the ocean than at greater depth.

Suggest two reasons why oil decomposes faster at the surface of the ocean than at greater depth.

Explain how the inclusion of starch in plastics makes them biodegradable.

Explain how the inclusion of starch in plastics makes them biodegradable.

Explain how the inclusion of starch in plastics makes them biodegradable.

Plastics are another source of marine pollution. Outline one way in which plastics can be made more biodegradable.

Plastics are another source of marine pollution. Outline one way in which plastics can be made more biodegradable.

Plastics are another source of marine pollution. Outline one way in which plastics can be made more biodegradable.

Green Chemistry reduces the production of hazardous materials and chemical waste.

Outline two specific examples or technological processes of how Green Chemistry has accomplished this environmental impact.

Green Chemistry reduces the production of hazardous materials and chemical waste.

Outline two specific examples or technological processes of how Green Chemistry has accomplished this environmental impact.

Explain how the inclusion of starch in plastics makes them biodegradable.

Explain how the inclusion of starch in plastics makes them biodegradable.

Explain how the inclusion of starch in plastics makes them biodegradable.

Oil spills can be treated with an enzyme mixture to speed up decomposition.

Outline one factor to be considered when assessing the greenness of an enzyme mixture.

Oil spills can be treated with an enzyme mixture to speed up decomposition.

Outline one factor to be considered when assessing the greenness of an enzyme mixture.

Oil spills can be treated with an enzyme mixture to speed up decomposition.

Outline one factor to be considered when assessing the greenness of an enzyme mixture.

Suggest two reasons why oil decomposes faster at the surface of the ocean than at greater depth.

Suggest two reasons why oil decomposes faster at the surface of the ocean than at greater depth.

Suggest two reasons why oil decomposes faster at the surface of the ocean than at greater depth.

Oil spills can be treated with an enzyme mixture to speed up decomposition.

Outline one factor to be considered when assessing the greenness of an enzyme mixture.

Oil spills can be treated with an enzyme mixture to speed up decomposition.

Outline one factor to be considered when assessing the greenness of an enzyme mixture.

Oil spills can be treated with an enzyme mixture to speed up decomposition.

Outline one factor to be considered when assessing the greenness of an enzyme mixture.