chapter 4 Flashcards
which of the following is not a part of cell theory
all organisms composed of one or more cells
cells come from other cells by division
cells are smallest living things
eukaryotes evolve from prokaryotes
eukaryotes evolve from prokaryotes
all cells have the following except plasma membrane cytoplasm genetic material cell wall
cell wall
what is only found in a eukaryote
cell wall
plasma membrane
ER
ribosomes
Endoplasmic Reticulum
what is difference between archaea and bacteria
peptidoglycan, molecular architecture of cell walls
archaea lack peptido
cytoskeleten includes:
microtublules made of actin filaments
microfilamens made of tublin
intermediate filaments made of twisted fibers
smooth ER
microtubules of actin filaments
smooth ER is important in? protein synth lipid synth protein glycolisation used to store a variety of ions
Lipid Synthesis
**Stores Ca2+ (calcium ions, but NOT a variety of ions!)
plasmodesmata in plants and gap junctions in animals function similarly in that______
they form channels between cells that allow diffusion of small molecules
most important factor that limits the size of a cell is
amount of DNA
all eukaryotes possess each one of these except: mitochondria cell wall cytoskeleton nucleus
cell wall
adherens junctions , which contain cadherin , are found in all animals. Which one of the following would be most likely
-cadherins would not be found in ancestor to all animals
cadherins would be found in prok cells
cadherins would be found in ancestor to all animals
cadherins in vertebrates but not inverts
Cahderins would be found in ancestor to all animals
cell theory: all cells represent continous line of descent
Motor proteins are similar in that they
Use ATP to produce movement
protein sorting pathway
RER- Transport Vesicle- Golgi Apparatus- final destination
chloroplasts and mitochondria have many common features bc they both
Arose by endosymbiosis
How are cytoskeletal filaments similar
they all contribute to shape of cell
