The Development of the Theory of the "RNA World" Resulted

question 42

Multiple Choice

The development of the theory of the "RNA world" resulted from the discovery of

• A) archaea.
• B) prions.
• C) bacteria.
• D) ribozymes.
• E) endosymbionts.

---

Definitions:

Embryonic Blood

Blood cells that are present in an embryo, fundamental in the development of the circulatory system.

Fetal Blood

Blood that circulates through a fetus, which has unique properties, such as a higher concentration of hemoglobin, to efficiently carry oxygen from the placenta.

Ducts

Passages or tubes in the body through which substances like air, liquid, or other materials can move from one area to another.

Milk

A nutrient-rich liquid food product produced by the mammary glands of mammals, commonly consumed by humans and used in various dairy products.