Biology Semester I Review

Front

What is the role of the circulatory system in relation to the digestive system?

Back

The circulatory system delivers nutrients absorbed from the digestive system to other parts of the body.

Front

What model is used to describe the structure and function of cell membranes?

Back

The fluid mosaic model.

Front

How do phospholipids contribute to the cell membrane's function?

Back

The arrangement of phospholipids separates the intracellular fluid from the extracellular fluid, helping maintain homeostasis.

Front

What is the relationship between photosynthesis and cellular respiration?

Back

Photosynthesis converts light energy into chemical energy, while cellular respiration converts chemical energy into usable energy.

Front

How does the Golgi apparatus contribute to cellular homeostasis?

Back

It modifies and packages lipids into vesicles for transport within the cell.

Front

Define homeostasis in biological systems.

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is the function of protein channels in the cell membrane?

Back

Protein channels facilitate the diffusion of specific molecules into and out of the cell.

Front

Explain the significance of cholesterol in the cell membrane.

Back

Cholesterol helps to stabilize the fluidity of the cell membrane, allowing for proper function of membrane proteins.

Front

What is the primary function of the small intestine in the digestive system?

Back

The small intestine is responsible for the absorption of nutrients from digested food.

Front

Describe the process of facilitated diffusion.

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via protein channels without the use of energy.