Cells Flashcards
(18 cards)
cells compared with prokaryotic cells
Bacterial cell is more smaller than human cell.
Bacterial cell has cell wall but human cell does not
Bacterial cell lack a nucleus but human cell has nucleus .
Bacterial cell lacks membrane bound organelles but human cell has membrane bound organelles
Bacteria has 70s ribosomes , human cell has 80s ribosomes .
Bacterial DNA is circular but human DNA is linear .
Bacterial DNA is not associated with his tone, human DNA is bound to histone
Eukaryotic- describe the structure and function of nucleus
Nuclear envelope
Nuclear pore
Chromosomes , linear DNA width histories
Nucleolus
Function: holds genetic information for production of proteins .
DNA replication
Production of rRNA
Production of mRNA
Name the main polymer that forms the following cell walls plant cells and fungal cells
Cellulose and chitin
Describe the role of one named organelle in digesting these bacteria
Lysosomes , fuse with vesicles and release hydrolytic enzymes
Identify 2 organelles in cells that enables the production of glycoproteins
Rough endoplasmic reticulum and Golgi body
Give 2 structure found in all prokaryotic cells and in all eukaryotic cells
Cell membrane , ribosome , DNA , cytoplasm
Give one gesture of the chloroplast allow protein to be synthesised inside the chloroplast and describe one difference between this feature in chloroplast and a eukaryotic cell.
DNA .
It’s circular DNA but nuclear DNA is linear
Ribosomes are smaller than cytoplasmic ribosomes
Eukaryotic cells produce and release proteins . Outline the role of organelles in the production, transport, and release of proteins from eukaryotic cells
DNA in nucleus is code for protein
Ribosomes produce proteins
Mitochondria produce ATP for protein synthesis
Golgi body modify protein and pack them in vesicle to exocytosis
State3 differences between DNA in nucleus of a plant cell and DNA in a prokaryotic cell
Plant is associated with histone ,prokaryotic is not associated with histone.
Linear vs circular .
No plasmid vs plasmid.
Introns vs no introns
Longer vs shorter
Name the main biological molecule in the cell membrane
Phospholipids
Describe the role of mitochondria in secreting a protein
Many mitochondria to release ATP for movement of active transport
Describe the role of Golgi body in secreting a protein
Many Golgi vesicles transport protein to cell membrane for exocytosis
Describe the role of the Golgi body in lipid absorption
Modify triglycerides .
Combines triglycerides with protein.
Package protein in vesicles to exocytosis
Name the main biological molecules in a bacterial cell wall
Murein
Give 2 features of all prokaryotic cells that are not features of eukaryotic cells
Cytoplasm with no membrane-bound organelle.
Single, circular DNA .
DNA free in cytoplasm .
DNA that is not associated with histone.
A cell wall that contains murein
Give 2 features of all viruses
Attachment proteins.
Capsid.
Nucleic acid.
Why viruses are classed as non living
Have no metabolic reaction .
Cannot independently respire .
Have no nutrition
Why are viruses are class as acellular
No cell surface membrane.
Not made of cells .
Have no organelles
