Cells Flashcards
What is the function of the nucleus?
Contains DNA - genetic information
What is the function of nucleolus?
Synthesize ribosomes
What is the function of cell membrane?
Allows molecules to pass in and out of the cell
What is the function of the cell wall?
Structural integrity
What is the function of the smooth ER?
Manufacture of lipids
What is the function of the rough ER?
Protein modification and production
Do bacteria and animal cells contain RNA?
Yes both
Do bacteria contain mitochondria?
No
Are bacteria bigger or smaller than animal cells?
Smaller
What proteins makes DNA before it is wound into chromatin?
Histones
What is the function of mitochondria?
Energy production for the cell
Contains DNA
What do all cells possess?
Cell membrane
DNA
Cytoplasm
Ribosomes
What two subsets of prokaryotes are there?
Archaebacteria
Eubacteria
What is kingdom protista?
Mutlicellular or unicellular
What does autotrophic mean?
Photosynthetic
How do fungi gain nutrients?
By absorbing
How do animals gain nutrients?
By ingesting
What molecules can be found in a lipid bilayer?
Phospholipid
Cholestorol
Proteins
What is the function of cholestorol in the lipid bilayer?
Provides membrane integrity - prevents lysis
What is a haemoglobin pathology?
Sickle cell anemia
Thalassemia
What cells can the nucleus ONLY be found in?
Eukaryotic cells
What is another cell organelle that may hold DNA?
Mitochondria
What is a ribosome pathology?
Treacher collins syndrome - abnormal facial development
What is the functions of the smooth ER in the liver, adrenal cortex and muscle?
Liver - glycogen –> glucose
Adrenal cortex –> steroid hormone production
Muscle –> Ca2+ storage for contraction
What cell organelles might be dysfunctioning in Alzheimers, parkinsons and epilepsy?
Endoplasmic reticulum, mitochondria
What is the function of the golgi apparatus?
Protein folding and packaging
What are vacuoles formed by?
Fusion of vesicles
What is the name of the folded surfaces on which ATP is generated in mitochondria?
Cristae
What fibrous proteins are found in eukaryotic cytoplasm?
Cytoskeleton
- actin microfilament
- intermediate filament
- tubulin - microtubule