Cell Growth and Division: Exploring the Cell Cycle and Its Phases

The video tutorial explains the size comparison between humans and cells, highlighting that cells are much smaller. It introduces the cell cycle, likening it to seasons, with interphase as the growth period and mitosis as the division period. The phases of interphase, including G1, S, and G2, are detailed, along with the concept of G0 where cells like neurons cease division. The tutorial concludes with the cyclical nature of the cell cycle.

How does the size of a cell compare to that of a human?

• A cell is about one one-billionth the size of a human.

• A cell is about one one-hundredth the size of a human.

• A cell is about one one-millionth the size of a human.

• A cell is about one one-thousandth the size of a human.

What is the primary activity during interphase?

• Cell death

• Cell growth

• Cell mutation

• Cell division

What is unique about cancer cells in the cell cycle?

• They do not grow or divide.

• They only grow and never divide.

• They divide more than they grow.

• They grow but do not divide.

What is the longest phase of the cell cycle?

• Mitosis

• G1 phase

• S phase

• G2 phase

What happens during the S phase of interphase?

• Cell growth

• DNA replication

• Cell division

• Protein synthesis

Which cells typically enter the G0 phase?

• Blood cells

• Skin cells

• Neurons

• Muscle cells

What is the purpose of the G2 phase?

• To prepare for DNA replication

• To prepare for mitosis

• To prepare for cell death

• To prepare for cell growth

What structures are produced during the G2 phase to assist in mitosis?

• Ribosomes

• Microtubules

• Chromosomes

• Mitochondria

What marks the completion of the cell cycle?

• The cell completes DNA replication

• The cell undergoes mitosis

• The cell enters G0 phase

• The cell finishes protein synthesis

What happens to cells after they complete mitosis?

• They enter the S phase

• They enter the G1 phase

• They enter the G2 phase

• They enter the G0 phase