Question

Students are learning that photosynthesis and cellular respiration are two critical chemical reactions that help keep life on Earth prospering. They draw a model relating the two processes.

Information
A model.Short description, A model.,Long description,
The model shows the Sun, a plant, and a frog, with arrows showing movement of substances.

Sunlight is given off by the Sun and is taken in by the plant.
For photosynthesis, (chloroplast), the plant gives off Glucose and Oxygen, which are then taken in by the frog.
For cellular respiration, (mitochondria), the frog gives off Carbon Dioxide and Water, which are then taken in by the plant.
The frog also gives off ATP, (energy).

Question
Which ,begin emphasis,two,end emphasis, substances are an input for cellular respiration and an output for photosynthesis?

Answer options with 6 options
1.
Water

2.
Oxygen

3.
Glucose

4.
Sunlight

5.
ATP

6.
Carbon dioxide

Answer 1

The two substances that are an input for cellular respiration and an output for photosynthesis are:

1. **Glucose** (output of photosynthesis and input for cellular respiration)
2. **Oxygen** (output of photosynthesis and input for cellular respiration)

So, the correct answer is **3. Glucose** and **2. Oxygen**.