Living Environment Regents Review 2

What is the 'energy currency' of the cell?

• NADH (Nicotinamide Adenine Dinucleotide)

• FADH2 (Flavin Adenine Dinucleotide)

• ATP (Adenosine Triphosphate)

• GTP (Guanosine Triphosphate)

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Define abiotic factors in an ecosystem.

• Abiotic factors are the living components of an ecosystem, such as plants and animals.

• Abiotic factors are the non-living components of an ecosystem, such as sunlight, water, temperature, and soil.

• Abiotic factors are the interactions between living organisms in an ecosystem.

• Abiotic factors are the chemical processes that occur within living organisms.

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What term describes the living components of an ecosystem?

• Abiotic

• Biotic

• Inorganic

• Synthetic

What is the complementary DNA sequence for ATCGA?

• TAGCT

• ATCGA

• CGTAC

• GCTAG

What is the role of decomposers in an ecosystem?

• Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

• Decomposers produce energy through photosynthesis.

• Decomposers compete with producers for sunlight.

• Decomposers are primary consumers that eat plants.

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What is biodiversity and why is it important?

• Biodiversity refers to the variety of life in a particular habitat or ecosystem, and it is important for ecosystem resilience and stability.

• Biodiversity is the number of species in a given area, and it is important for economic growth.

• Biodiversity is the study of how species interact with each other, and it is important for scientific research.

• Biodiversity refers to the genetic differences within a species, and it is important for agricultural development.

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Which organisms are most affected by a decrease in CO2 levels?

• Green Plants and Algae

• Animals

• Fungi

• Bacteria

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In a 20% salt solution placed in dialysis tubing in distilled water, where will the water move?

• The water will move into the dialysis tubing, following the concentration gradient.

• The water will remain in the distilled water and not move.

• The water will move out of the dialysis tubing into the salt solution.

• The water will evaporate due to the salt concentration.

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What is osmosis?

• The movement of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

• The process of diffusion of solutes across a semi-permeable membrane.

• The movement of water molecules from an area of higher solute concentration to an area of lower solute concentration.

• The absorption of nutrients by plant roots from the soil.

What is a food chain?

• A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

• A food chain is a circular pattern of food consumption among animals.

• A food chain is a complex web of interactions between different species in an ecosystem.

• A food chain is a list of all the plants and animals in a specific area.

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