Which Statement About the Relationship Between Bacteria and the Human

question 46

Multiple Choice

Which statement about the relationship between bacteria and the human body is most accurate?

• A)Although many tissues are kept bacteria-free, around 100 trillion bacteria live on or in us.
• B)About one-tenth of our body weights are due to bacteria
• C)Bacteria are found in the mouth, stomach, and intestines in about equal amounts.
• D)Most bacteria are transient; that is, they come for brief periods and then are gone.

---

Definitions:

Vessel Members

Specialized cells that form part of the xylem vessels in plants, involved in the transport of water and nutrients.

Lignin

Material that strengthens cell walls of vascular plants.

Stomata

Small openings on the surfaces of plant leaves and stems that facilitate gas exchange.

Vascular Tissue

Specialized tissue in plants that is responsible for the transport of water and nutrients throughout the plant body.