7th Grade Biology Quiz

What is the fundamental unit of all living organisms?

• Tissue

• Organ

• Cell

• Organism

Which process involves the movement of solvent particles across a semipermeable membrane?

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

What type of cells lack a true nucleus?

• Eukaryotic Cells

• Animal Cells

• Prokaryotic Cells

• Plant Cells

Which organ is NOT part of the human respiratory system?

• Trachea

• Lungs

• Bronchi

• Heart

What is the primary function of alveoli in the lungs?

• Filter air

• Gas exchange

• Support the trachea

• Produce mucus

What is the process of breathing in called?

• Ventilation

• Exhalation

• Inhalation

• Respiration

Which of the following is a characteristic of eukaryotic cells?

• Binary fission

• True nucleus

• Single-celled

• No nucleus

What is the role of osmosis in plants?

• Absorbs nutrients

• Produces energy

• Maintains water content

• Regulates temperature

Which structure prevents food from entering the windpipe?

• Pharynx

• Larynx

• Epiglottis

• Trachea

What is the main function of the diaphragm in respiration?

• Produces sound

• Controls heart rate

• Separates thoracic and abdominal cavities

• Filters air