Globular Clusters

question 171

Multiple Choice

Globular clusters

• A) are young formations and always contain many hot O- and B-type stars.
• B) are old formations and always contain only old, red stars.
• C) can be formed in collisions of galaxies and thus can be young if the collision occurred recently.
• D) are continually forming in spiral galaxies, like the Milky Way, and thus they show a great range of ages in any one galaxy.

---

Definitions:

Mitosis

A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus.

Meiosis

A type of cell division in which each new cell contains only one member of each chromosome pair.

Blood Pressure

The pressure of circulating blood against the walls of blood vessels, a critical indicator of cardiovascular health.

Membrane

A thin layer of tissue or material that acts as a barrier, separating different areas or environments, or allowing selective passage of substances.