Match the Combining Form with Its Meaning

question 55

Multiple Choice

Match the combining form with its meaning.Letters may be used more than once or not at all.
-pneum/o

• A)dust
• B)cartilage
• C)nose
• D)straight
• E)breathing
• F)lung
• G)mouth, mouth-like opening
• H)coal, coal dust
• I)sound, voice
• J)cancer

---

Definitions:

Sex Pili

Hair-like structures on the surface of bacterial cells that are involved in the transfer of DNA during conjugation.

Chemical Signals

Molecules released by cells to communicate with each other, affecting the behavior or physiology of other cells.

Zygotes

The initial cell formed when two gamete cells (e.g., sperm and ovum) are fused, representing the earliest developmental stage of many organisms.

Plasmids

Circular DNA molecules separate from the chromosomal DNA, often found in bacteria, that can replicate independently and carry genes beneficial for survival.