IB Biology Review

Front

What distinguishes prokaryotic cells from eukaryotic cells?

Back

Prokaryotic cells have a cell structure that is not compartmentalized, while eukaryotic cells have a compartmentalized cell structure.

Front

What phase of mitosis is characterized by the separation of sister chromatids?

Back

Anaphase.

Front

What phase of mitosis is characterized by the formation of two new nuclei?

Back

Telophase.

Front

What occurs during the G2 stage of interphase?

Back

Synthesis of proteins.

Front

What are stem cells that can differentiate into any type of cell called?

Back

Totipotent stem cells.

Front

What is the primary function of ribosomes in a cell?

Back

To synthesize proteins.

Front

What is the role of the smooth endoplasmic reticulum?

Back

Synthesis of lipids and detoxification of drugs.

Front

What is the difference between totipotent and pluripotent stem cells?

Back

Totipotent stem cells can differentiate into any cell type, including placental cells, while pluripotent stem cells can differentiate into almost any cell type but not placental cells.

Front

What is the function of the cell membrane?

Back

To protect the cell and regulate the movement of substances in and out.

Front

What is the significance of homologous chromosomes during meiosis?

Back

They undergo recombination and independent assortment, leading to genetic diversity.