EmSAT EmSAT Biology 2

Question 1

What is photosynthesis?

Accepted Answer

Converting light energy to chemical energy stored in glucose

Answer

Photosynthesis is the process by which plants, algae, and some bacteria convert light energy, CO₂, and water into glucose and oxygen. The overall equation is: 6CO₂ + 6H₂O + light → C₆H₁₂O₆ + 6O₂.

Question 2

Where does photosynthesis occur in plant cells?

Accepted Answer

Chloroplasts

Answer

Photosynthesis occurs in chloroplasts, which contain the green pigment chlorophyll. Chlorophyll absorbs light energy that drives the photosynthetic reactions.

Question 3

What are the products of aerobic cellular respiration?

Accepted Answer

Carbon dioxide, water, and ATP

Answer

Aerobic cellular respiration: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP. The products are carbon dioxide, water, and ATP (energy).

Question 4

What is the role of chlorophyll?

Accepted Answer

To absorb light energy for photosynthesis

Answer

Chlorophyll is the green pigment in chloroplasts that absorbs light energy (primarily red and blue wavelengths) to drive photosynthesis. It reflects green light, which is why plants appear green.

Question 5

What is the basic unit of heredity?

Accepted Answer

Gene

Answer

A gene is the basic unit of heredity. It is a segment of DNA that codes for a specific protein or functional RNA molecule, and it determines a particular trait.

EmSAT Practice Test

EmSAT Practice Test

EmSAT EmSAT Biology 2