The Placenta Is Usually Functioning to Deliver Nutrients and Oxygen

question 87

Multiple Choice

The placenta is usually functioning to deliver nutrients and oxygen to, and remove waste from, the embryonic blood by the ________ week of pregnancy.

• A) first
• B) second
• C) third
• D) fourth
• E) fifth

---

Definitions:

Lyses

The breakdown or decomposition of cells by rupture of the cell wall or membrane.

Metabolic Diversity

The variation in metabolic pathways and processes among different organisms, allowing adaptation to a wide range of environmental conditions.

Autotrophic

Organisms that are capable of producing their own food from inorganic substances using light or chemical energy, like plants through photosynthesis.

Heterotrophic

Describes organisms that obtain their energy by consuming other organisms since they cannot synthesize their own food.