Cell Structure and Function Concepts

The video tutorial covers chapter 2 on cell structure and function, focusing on the principles of cell theory and the differences and similarities between prokaryotic and eukaryotic cells. It explains the basic unit of life, the cell, and its role in living organisms. The video details the structures and features of prokaryotic cells, such as bacteria, and eukaryotic cells, including plants and animals. It highlights the differences in cell size, nucleus, DNA, organelles, and cell division methods, as well as the similarities like plasma membrane and ribosomes.

Which of the following is NOT a principle of cell theory?

• All cells have a nucleus.

• DNA is passed from cell to cell during division.

• Cells are the basic unit of life.

• New cells arise from pre-existing cells.

What is a defining feature of prokaryotic cells?

• Lack of ribosomes

• Presence of chloroplasts

• Presence of a membrane-bounded nucleus

• Lack of a membrane-bounded nucleus

Which structure in prokaryotic cells is responsible for locomotion?

• Capsule

• Plasma membrane

• Pili

• Flagella

Which of the following is a characteristic of eukaryotic cells?

• They lack a nucleus.

• They contain membrane-bounded organelles.

• Their DNA is circular.

• They have a simple structure.

What is the role of histone proteins in eukaryotic cells?

• They coil and compact DNA into chromosomes.

• They assist in DNA replication.

• They help in cell division.

• They are involved in protein synthesis.

Which of the following is a difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have linear DNA.

• Prokaryotic cells have a larger size.

• Eukaryotic cells have a membrane-bounded nucleus.

• Eukaryotic cells lack organelles.

What is the composition of the cell wall in prokaryotic cells?

• Cellulose

• Chitin

• Peptidoglycan

• Lignin

How do prokaryotic cells primarily divide?

• Mitosis

• Meiosis

• Binary fission

• Budding

Which feature is common to both prokaryotic and eukaryotic cells?

• Presence of mitochondria

• Presence of chloroplasts

• Presence of ribosomes

• Presence of a nucleus

What is the function of the plasma membrane in cells?

• To synthesize proteins

• To provide structural support

• To store genetic information

• To control the movement of substances in and out of the cell