cell structure and organisation

What do cells contain?

A surrounding membrane, cytoplasm, organelles, control center with DNA

What are the types of cells

Prokaryotic and eukaryotic cells

What are the main features of prokaryotic cells?

Lack any membrane bound nucleus and organelle (except ribosomes), nucleuid= region of DNA concentration, cell division by binary fission,usually unicellular, smaller than eukaryotic, chlorophyll scattered in cytoplasm, huge variety of metabolic pathways, conjugation, one but not true chromosome, rigid cell wall formed

What are the main features of eukaryotic cells?

Larger, DNA, a true nucleus, organelles present, cell division by mitosis,multicellular, chlorophyll in plants, metabolic pathways, as Golgi and mitochondria

What are the common features of probaryctic and eukaryotic cells?

RNA, cytoplasm, flagella, membrane bound, DNA, ribosomes

What is cell membrane?

A thin layer of cytoplasm around the outside of the cell

What is the function of cell membrane?

Physically separates the intercellular component from the extracellular environment

What are the main features of cell membrane?

Selectively permeable, oxygen water and food are allowed to enter,consists both lipids and proteins

What is the structure of the cell membrane?

The fundamental structure uf the membrane is to gate keep the cell, deciding what goes in and out while protecting inside

What is the function of cholesterol in membrane?

Cholesterol keeps balance,it weeps the cell membrane from getting too hard or soft

What is the function of phospholipid bilayer in membrane?

Proteins embedded within it carry out the specific functions of the plasma membrane, including selective transport of molecules and cell-cell recognition

What is glycoclyx?

Glycolipids + glycoproteins =””

What are glycolipids?

Carbohydrates attached to lipids

What are glycoproteins?

Carbon hydrates attached to proteins

What is cytoplasm?

The liquid part of cytoplasm is about 90% water with molecule of salts and sugars dissolved in it