EOC Biology Review GSE1

Front

What is the fluid-mosaic model of the cell membrane?

Back

The fluid-mosaic model describes the cell membrane as a dynamic structure composed of a phospholipid bilayer with embedded proteins that can move laterally, allowing for flexibility and functionality.

Front

What is the function of proteins in the cell membrane?

Back

Proteins in the cell membrane facilitate the transport of substances across the membrane, including active transport mechanisms.

Front

What are the phases of the cell cycle?

Back

The cell cycle consists of Interphase (G1, S, G2 phases) and the Mitotic phase (Mitosis and Cytokinesis).

Front

What occurs during the G1 phase of the cell cycle?

Back

During the G1 phase, the cell grows and synthesizes proteins necessary for DNA replication.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA replication occurs, resulting in the duplication of chromosomes.

Front

What is the G2 phase of the cell cycle?

Back

The G2 phase is the final stage of Interphase where the cell prepares for mitosis, including the synthesis of proteins and organelles.

Front

What is the role of enzymes in metabolic reactions?

Back

Enzymes act as catalysts that speed up metabolic reactions, allowing organisms to efficiently convert food into energy.

Front

Why do lipids provide more energy than carbohydrates or proteins?

Back

Lipids have more carbon-hydrogen bonds per gram than carbohydrates or proteins, resulting in a higher energy yield when metabolized.

Front

What is active transport?

Back

Active transport is the process of moving substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is the difference between mitosis and cytokinesis?

Back

Mitosis is the process of nuclear division, while cytokinesis is the division of the cytoplasm, resulting in two separate daughter cells.