Cells and Tissues Quiz BWHS

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

• atom

• molecule

• organ

• cell

Answer explanation

The cell is the basic structural and functional unit of all living organisms. It is the smallest unit that can carry out life processes, making it essential for the organization and function of life.

Which organelle is responsible for the production of energy in a cell?

• nucleus

• endoplasmic reticulum

• ribosome

• mitochondria

Answer explanation

The mitochondria are known as the powerhouse of the cell because they produce energy in the form of ATP through cellular respiration, making them the correct answer for energy production.

What is the main function of epithelial tissues?

• To protect underlying tissues and organs.

• To produce hormones and enzymes.

• To transport oxygen to the cells.

• To provide structural support for the body.

Answer explanation

The main function of epithelial tissues is to protect underlying tissues and organs. They form a barrier that shields against physical damage, pathogens, and dehydration, making this choice the correct answer.

Which type of connective tissue provides support and flexibility to various body parts?

• skin

• cartilage

• bone

• muscle

Answer explanation

Cartilage is a type of connective tissue that provides both support and flexibility, making it essential for structures like joints, ears, and the nose. Unlike bone, which is rigid, cartilage allows for movement and cushioning.

Which type of muscle tissue is responsible for voluntary movements?

• Connective tissue

• Skeletal muscle tissue

• Cardiac muscle tissue

• Smooth muscle tissue

Answer explanation

Skeletal muscle tissue is the type of muscle responsible for voluntary movements, allowing us to control actions like walking and lifting. In contrast, cardiac and smooth muscle tissues are involuntary.

What is the main function of nervous tissue?

• Store and retrieve information

• Produce and secrete hormones

• Provide structural support

• Transmit and process information

Answer explanation

The main function of nervous tissue is to transmit and process information through electrical and chemical signals, enabling communication between different parts of the body.

Which type of tissue covers the external surface of the body and lines internal organs and cavities?

• connective tissue

• muscle tissue

• nervous tissue

• epithelial tissue

Answer explanation

Epithelial tissue is the type of tissue that covers the external surface of the body and lines internal organs and cavities, making it the correct answer to the question.

Which type of tissue connects, supports, and protects body organs?

• connective tissue

• epithelial tissue

• nervous tissue

• muscle tissue

Answer explanation

Connective tissue is responsible for connecting, supporting, and protecting body organs, making it the correct choice. Other tissue types serve different functions: epithelial tissue covers surfaces, nervous tissue transmits signals, and muscle tissue enables movement.

Which type of tissue is responsible for involuntary movements of the body?

• muscle tissue

• nervous tissue

• epithelial tissue

• connective tissue

Answer explanation

Muscle tissue is responsible for involuntary movements, such as those in the heart and digestive system. Unlike nervous, epithelial, and connective tissues, muscle tissue contracts automatically without conscious control.

Which tissue is found in the spinal cord?

• nervous tissue

• skeletal muscle

• smooth muscle

• cardiac muscle

Answer explanation

The spinal cord contains nervous tissue, which is essential for transmitting signals between the brain and the rest of the body. Skeletal, smooth, and cardiac muscles are not found in the spinal cord.