Cell Biology Concepts and Functions

This video discusses the differences between prokaryotes, eukaryotes, and viruses. It explains the structure and organelles of prokaryotic cells, highlighting the unique features of eukaryotic cells, such as the presence of a nucleus and various organelles. The video also covers the characteristics of viruses, emphasizing their nonliving status due to their dependence on host cells and lack of metabolism.

Which organelle is found in all prokaryotic cells?

• Mitochondrion

• Golgi body

• Nucleus

• Ribosome

What is the primary function of the bacterial flagellum?

• DNA replication

• Photosynthesis

• Movement

• Protein synthesis

What is a key difference between prokaryotic and eukaryotic cells?

• Presence of a cell wall

• Presence of a nucleus

• Ability to photosynthesize

• Presence of ribosomes

What is the size of ribosomes in eukaryotic cells?

• 80S

• 70S

• 60S

• 50S

Which organelle is abundant in eukaryotic cells but not in prokaryotic cells?

• Nucleoid

• Mitochondrion

• Ribosome

• Cytoplasm

What is the main component of the prokaryotic cell wall?

• Peptidoglycan

• Lignin

• Cellulose

• Chitin

Why are viruses not considered living organisms?

• They have a cell wall

• They cannot live independently

• They can metabolize

• They have a nucleus

What protects the genetic material of a virus?

• Capsid

• Ribosome

• Nucleus

• Cell wall

What type of genetic material can viruses have?

• Neither DNA nor RNA

• Either DNA or RNA

• Only RNA

• Only DNA

What is the function of the proteins in the viral envelope?

• DNA replication

• Attachment to host cells

• Protein synthesis

• Photosynthesis