Fall 22 Final Exam

Front

What is a hypertonic environment?

Back

A hypertonic environment is when the concentration of solute (such as sugar or salt) is higher outside of the cell than inside.

Front

What do the arrows in a food chain or web represent?

Back

The arrows show the direction in which energy is flowing between organisms.

Front

What characterizes an isotonic environment?

Back

In an isotonic environment, the concentration of solute is the same inside and outside of the cell.

Front

What is passive transport?

Back

Passive transport is the movement of particles across a cell membrane from an area of higher concentration to an area of lower concentration without using energy.

Front

What does an energy pyramid represent?

Back

An energy pyramid represents the amount of energy available to the next 'feeder' in a food web.

Front

Define isotonic solution.

Back

An isotonic solution is one where the concentration of solute is equal inside and outside the cell, resulting in no net movement of water.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.

Front

What is the role of producers in a food web?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food web.

Front

What is the significance of trophic levels in an ecosystem?

Back

Trophic levels represent the different stages in a food chain, indicating the flow of energy and nutrients from one level to the next.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.