Unraveling the Secrets of Cells and Their Functions

The video tutorial explains that cells are the basic units of life, with animal cells containing structures like the nucleus, cell membrane, and cytoplasm. The nucleus holds DNA and controls cell activities, while the membrane regulates entry and exit of substances. Plant cells have additional structures like cell walls, chloroplasts, and vacuoles, aiding in photosynthesis and structural support. Specialized cells such as red blood cells, nerve cells, and white blood cells have unique functions, including oxygen transport, communication, and fighting infections.

What is the basic unit of life?

• Cell

• Organ

• Tissue

• Organism

Which part of the animal cell contains genetic information?

• Nucleus

• Cytoplasm

• Cell membrane

• Mitochondria

What is the primary function of the cell membrane?

• To control cell division

• To store energy

• To regulate what enters and exits the cell

• To produce proteins

Which structure in plant cells is responsible for photosynthesis?

• Chloroplast

• Vacuole

• Cell wall

• Nucleus

What substance gives plants their green color?

• Cell sap

• Glucose

• Chlorophyll

• Cellulose

What is the role of vacuoles in plant cells?

• To produce energy

• To provide support and store sugars

• To conduct photosynthesis

• To transport nutrients

Why do red blood cells lack a nucleus?

• To store more nutrients

• To absorb and transport more oxygen

• To divide more rapidly

• To fight infections

What is the function of dendrites in nerve cells?

• To store energy

• To transmit electrical signals

• To fight infections

• To communicate with other nerve cells

How do white blood cells fight infections?

• By engulfing pathogens

• By producing chlorophyll

• By storing oxygen

• By dividing rapidly

What is the process called when white blood cells engulf pathogens?

• Photosynthesis

• Mitosis

• Phagocytosis

• Respiration