The Cell Flashcards
Levels of organization
- chemical
- cellular
- tissue
- organ
- organ system
- organism
2 types of endoplasmic reticulum
rough er and smooth er
Nucleic acids
2 forms: RNA and DNA
Nuclieotides
break down the nucleic acid, consist of PO4, monosaccharide and organic base
Organic base
adenine, thymine,uracil, cytosine, guanine
Monosaccharides
one sugar/carbohydrate
Disaccharide
2 monosaccharides covalently bonded together
Polysaccharide
many monosaccharides bonded together
2 types of membrane proteins
integral proteins and peripheral proteins
Cell membrane is composed of..
- phospholipid bilayer
- cholesterol
- membrane proteins
- membranes carbohydrates
- microvilli
Non membraneous organelles
ribosome, centrosome, cytoskeleton
2 divisions of the cell
- cytosol
- organelles (membranous and non membranous)
Membranous organelles
- mitochondria
- endoplasmic reticulum
- golgi apparatus
- lysosome
- nucleus
3 types of cytoskeleton
-microfilaments
-intermediate
microtubules
Dipeptide
2 aa joined together
Polypeptide
many aa joined together
Protein
1 or more polypeptide folded into final shape
5 types
- glyceride
- phospholipids
- cholesterol
- steroids
- proteins
Parts of nucleus
- nucleolus
- chromatids/chromosomes
- nuclear envelope
2 cell types based on chromosome
- gametes
2. somatic
ATP
adenosine triphosphate. NRG stored in covalent bonds. powers cell activity
ATP consists of..
3 phosphates, ribose, adenine
Functions of DNA
cellular respiration. template to make RNA
Functions of RNA
proteins synthesis
Functions of ATP
breaks bond to create immediate NRG
Cytoplasm
area between inside of cell membrane and outside of nucleus
Cytosol
gel like ICF
Ribosomes
sites for protein synthesis
Centrosomes
organize microtubules to form spindle apparatus and organize cytoskeleton
Cytoskeleton
determines cells shape, important in cell movement, divisions, anchoring of organelles
Microfilaments
muscle contraction, maintenance of cell shape, help with cytokenesis
Intermediate filaments
supports the cytoplasm
Microtubules
structural, move or secure organelles in place
Mitochondria
site of ATP synthesis
Rough er
attached ribosomes, synthesis of proteins
Smooth er
lacked attached ribosome, synthesis lipids and steroid hormones
Golgi apparatus
stacks of membrane discs, modifies, sorts, packages, and delivers proteins/lipids to cell membrane lysosomes, or for secretion
Lysosomes
filled with digestive enzymes, digest bacteria, viruses, worm out organelles.
Nucleus
cell control centre