Semester 1 Practice Flashcard

Front

What is the energy transfer in an ecosystem?

Back

Energy transfer in an ecosystem follows a pyramid structure, where producers receive the most energy, followed by herbivores, carnivores, and top predators, each level receiving less energy than the one below.

Front

What happens to a cell in an isotonic environment?

Back

In an isotonic environment, the cell remains the same size because the solute concentration is equal inside and outside the cell, resulting in no net movement of water.

Front

Define glycolipid.

Back

A glycolipid is a lipid with a carbohydrate attached, which plays a key role in cell recognition and signaling.

Front

What is the function of phospholipids in a cell membrane?

Back

Phospholipids form the basic structure of cell membranes, creating a bilayer that is selectively permeable to substances.

Front

What are producers in an energy pyramid?

Back

Producers are organisms, like plants, that create their own food through photosynthesis and form the base of the energy pyramid.

Front

What is the role of herbivores in an ecosystem?

Back

Herbivores are primary consumers that eat producers, transferring energy from plants to higher trophic levels.

Front

What is the significance of the top predator in an ecosystem?

Back

Top predators help maintain the balance of ecosystems by controlling the populations of herbivores and other lower trophic levels.

Front

Explain the concept of trophic levels.

Back

Trophic levels represent the hierarchical positions in an ecosystem, defined by how organisms obtain energy: producers, primary consumers, secondary consumers, and so on.

Front

What is the difference between a carnivore and an herbivore?

Back

Carnivores are animals that eat other animals, while herbivores are animals that primarily consume plants.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.