Bio Semester 1 Cumulative Review

Front

What type of movement uses proteins that act like pumps to move molecules through the cell membrane?

Back

Active transport

Front

What do we call organisms that obtain energy by feeding on other organisms?

Back

Consumers

Front

What happens to the populations of hawks and rabbits if a disease strikes the snake population in the food chain?

Back

The population of hawks will decrease. The population of rabbits will increase.

Front

What is the term for when a molecule can occupy the same active site as the substrate?

Back

Competitive inhibition

Front

What occurs to chromosomes during anaphase of mitosis?

Back

Chromosomes are pulled toward opposite ends of the cell.

Front

What is the process called when molecules move from an area of high concentration to an area of low concentration without energy?

Back

Diffusion

Front

What is the role of producers in an ecosystem?

Back

Producers create their own energy through photosynthesis.

Front

What is the difference between a consumer and a decomposer?

Back

Consumers feed on other organisms, while decomposers break down dead organic material.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes speed up chemical reactions by lowering the activation energy.

Front

What is the significance of the cell membrane's selective permeability?

Back

It allows the cell to maintain homeostasis by controlling what enters and exits.