Prokaryotic Cell Structure and Function

This video tutorial explores the structure and function of prokaryotic cells, which include organisms from the domains Archaea and Bacteria. It covers the lack of a nucleus in prokaryotes, their simple cell structure, and examples like E. coli. The video details the functions of various cell components such as the capsule, cell wall, cell membrane, flagellum, and pili. It also explains the internal components like the cytoplasm, nucleoid, plasmids, and ribosomes, highlighting their roles in protection, support, regulation, locomotion, DNA transfer, and protein synthesis.

Which domains do prokaryotes belong to?

• Bacteria and Eukarya

• Archaea and Bacteria

• Eukarya and Archaea

• Fungi and Protista

What is a defining feature of prokaryotic cells?

• Complex organelles

• Multicellular structure

• Lack of compartmentalization

• Presence of a nucleus

What is the function of the capsule in prokaryotic cells?

• DNA replication

• Protein synthesis

• Protection and attachment

• Photosynthesis

What is the primary component of the prokaryotic cell wall?

• Lignin

• Peptidoglycan

• Chitin

• Cellulose

What is the role of the flagellum in prokaryotic cells?

• Photosynthesis

• Locomotion

• DNA replication

• Protein synthesis

What is the function of attachment pili?

• Protein synthesis

• Photosynthesis

• Adhering to surfaces

• Locomotion

Where is the DNA located in prokaryotic cells?

• Nucleoid

• Mitochondria

• Chloroplast

• Nucleus

What are plasmids?

• Linear DNA strands

• Circular DNA pieces

• Lipid bilayers

• Protein molecules

What is the size of ribosomes in prokaryotic cells?

• 90S

• 60S

• 70S

• 80S

What is the primary function of ribosomes in prokaryotic cells?

• Protein synthesis

• DNA replication

• Photosynthesis

• Lipid synthesis