Which Is Not an Important Biogeochemical Cycle on Earth

question 44

Multiple Choice

Which is not an important biogeochemical cycle on Earth?

• A) ATP cycle
• B) water cycle
• C) carbon cycle
• D) phosphorus cycle
• E) nitrogen cycle

---

Definitions:

Restriction Enzyme

An enzyme that cuts DNA at specific recognition nucleotide sequences, widely used in molecular biology.

Reverse Transcriptase

An enzyme that catalyzes the transcription of RNA into DNA, allowing retroviruses to integrate into the host genome.

CDNA

Complementary strand of DNA synthesized from an RNA template by the enzyme reverse transcriptase.

Medical Application

The use or practice of medicine and healthcare techniques for diagnostic, therapeutic, or preventive purposes.