Final Exam prep chapters 5, 6, 11

Front

What is the orientation of the hydrophilic and hydrophobic parts of phospholipids in a biological membrane?

Back

Hydrophilic heads face outward and hydrophobic tails face inward.

Front

During which phase of mitosis do the centromeres become aligned at the cell's equator?

Back

Metaphase.

Front

What are the components of ribosomes?

Back

Ribosomal RNA (rRNA) and more than 50 different protein molecules.

Front

During anaphase of mitosis, what significant event occurs?

Back

Centromeres separate, and sister chromatids separate.

Front

What role does cholesterol play in the membrane structure?

Back

Modulates membrane fluidity.

Front

Define phospholipid and its role in cell membranes.

Back

Phospholipids are molecules with hydrophilic heads and hydrophobic tails that form the bilayer of cell membranes.

Front

What is the function of ribosomal RNA (rRNA) in ribosomes?

Back

rRNA helps in the synthesis of proteins by providing a site for translation.

Front

Explain the significance of the cell cycle in cell division.

Back

The cell cycle ensures proper division and replication of cells, maintaining genetic integrity.

Front

What occurs during telophase of mitosis?

Back

Chromosomes de-condense, nuclear envelopes reform, and the cell prepares to divide.

Front

Describe the difference between mitosis and meiosis.

Back

Mitosis results in two identical daughter cells, while meiosis produces four genetically diverse gametes.