According to the World Health Organization (WHO) and the Joint

question 85

Multiple Choice

According to the World Health Organization (WHO) and the Joint United Nations Programme on HIV/AIDS (UNAIDS) , what is the estimated number of people living with HIV worldwide?

• A) 14 million
• B) 20 million
• C) 37 million
• D) 54 million

---

Definitions:

Chemoheterotrophs

Organisms that obtain their energy and carbon from organic compounds, typically by consuming other organisms or organic matter.

Photoautotrophs

Organisms that perform photosynthesis to synthesize nutrients from carbon dioxide and water using sunlight.

Photosystem I

A component of the photosynthetic system found in the chloroplasts of plants and algae that captures light energy and converts it into chemical energy during the process of photosynthesis.

Chlorophyll

A green pigment found in the chloroplasts of plants, algae, and some bacteria, crucial for photosynthesis as it absorbs light energy to produce sugar.