Exploring Life Science Concepts

What is the basic unit of life?

• Atom

• Cell

• Tissue

• Organ

Which organelle is responsible for photosynthesis in plant cells?

• Mitochondria

• Ribosome

• Chloroplast

• Nucleus

What is the main function of the respiratory system?

• To circulate blood

• To break down food

• To exchange gases

• To protect the body

Which of the following is a biotic factor in an ecosystem?

• Water

• Sunlight

• Temperature

• Plants

What is the genetic material found in the nucleus of a cell?

• RNA

• DNA

• Protein

• Lipid

Which of the following is a property of matter?

• Color

• Taste

• Mass

• All of the above

What is the process by which plants convert sunlight into chemical energy?

• Respiration

• Photosynthesis

• Fermentation

• Digestion

Which human body system is responsible for transporting nutrients and oxygen to cells?

• Digestive system

• Nervous system

• Circulatory system

• Skeletal system

What is the role of decomposers in an ecosystem?

• To produce energy

• To break down dead organisms

• To compete with other organisms

• To provide shelter

Which of the following is an example of a dominant trait?

• Blue eyes

• Brown eyes

• Blonde hair

• Red hair