Biology Challenge

What is the basic structural and functional unit of all living organisms?

• organ

• molecule

• tissue

• cell

Which organelle is known as the powerhouse of the cell?

• endoplasmic reticulum

• ribosomes

• lysosomes

• mitochondria

What is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll?

• Photosynthesis

• Photography

• Photo editing

• Photocopying

In which part of the plant does photosynthesis mainly occur?

• Leaves

• Flowers

• Stems

• Roots

What is the relationship between a predator and its prey in an ecosystem?

• Prey hunt predators for food.

• Predators and prey have a symbiotic relationship.

• Predators hunt and consume prey for food.

• Predators and prey do not interact in an ecosystem.

What is the term used to describe the variety of life forms on Earth?

• Species diversity

• Ecosystem variety

• Biodiversity

• Nature assortment

Which system in the human body is responsible for the exchange of gases between the body and the environment?

• Digestive system

• Nervous system

• Respiratory system

• Circulatory system

What is the largest organ in the human body?

• skin

• liver

• brain

• heart

Which part of the human brain is responsible for coordinating muscle movements and maintaining balance?

• occipital lobe

• cerebellum

• temporal lobe

• frontal lobe

What is the function of the red blood cells in the human body?

• Produce insulin

• Regulate body temperature

• Store vitamins

• Transport oxygen and remove carbon dioxide