Prokaryotic&Eukaryotic Cells Flashcards
What are the main features of a prokaryotic cell?
DNA
Cytosol
Cell Wall
What is the difference between a prokaryotic cell and a eukaryotic cell?
Eukaryotic cells have a membrane bound nucleus, prokaryotic cells don’t
What is the bacterial cell wall made of and what is its function?
Peptidoglycan(a matrix of polysaccharides linked by short polypeptide chains).
Protects the cell, maintains it’s shape and prevents excessive uptake of water
Describe the function and structure of the flagellae.
Threadlike structure.
Involved in movement.
Describe the structure and function of the chromatin.
Complex of DNA and protein that forms chromosomes.
Contains genetic information.
What are the structures unique to animal cells?
Centrioles
Microvilli
What structures are found in prokaryotic cells?
Mucilaginous capsule
Pili
Fimbriae
Flagellae
What is the function of the pili and fimbriae
Projections from surface for attachment
Describe the structure and function of the mucilaginous capsule
Made of sticky polysaccharide
Gives protection against phagocytosis
Describe the structure and function of the nucleolus
Made of multiple copies of ribosomal RNA gene
Site of transcription of rRNA
Describe the structure and function of microbodies
Spherical sac
Breaks down hydrogen peroxide
Describe the structure and function of the cytoskeleton
Made of microtubules, intermediate filaments and microfilaments
Responsible for cell movements
Form spindle
Describe the structure and function of the plasmodesmata
Fine cytoplasmic thread
Intercellular connections
