Cell Division
Prokaryotic Cells
Eukaryotic Cells
Cell Membranes
Cell Division
100
What are the key principles of cell theory?
- living organisms are composed of cells - cells are the smallest units of life - all cells come from pre-existing cells
100
Name an example of a prokaryote
E.coli any bacteria
100
What is the role of a ribosome?
Protein synthesis
100
Define diffusion and osmosis
the essential difference; high to low concentration in diffusion; water moves from low to high solute concentration in osmosis
100
Growth, embryonic development, tissue repair and asexual reproduction each involve this process
Mitosis
200
Name 3 of the 6 functions of life
- metabolism - growth - response (or sensitivity) - homeostasis - nutrition - reproduction
200
What are the small circles of DNA that can be passed between cells?
Plasmids
200
Draw and label a mitochondria
draw..
200
Explain why the fatty acid "tails" of phospholipid molecules are aligned towards the middle of the membrane
include hydrophobic and hydrophilic properties
200
What issue may result from uncontrolled cell divisions?
Tumors
300
One cell can function on its own, but if it interacts with other cells in a group, the organism can carry out a range of more complicated functions. What term represents this description?
Emergent Properties
300
Name and discuss the means by which prokaryotic cells divide
Binary fission
300
What functions does the smooth ER serve in contrast to the RER?
estrogen production in ovaries, breaks down toxins in the liver, and lipid production. RER- protein synthesis
300
List four of the six ways that a substance can move from one side of a membrane to the other
diffusion, facilitated diffusion, protein pumps, osmosis, endocytosis, exocytosis
300
What are the four stages of mitosis; what events occur at each stage?
Prophase, Metaphase, Anaphase, Telophase
400
State one therapeutic use of stem cells
- Type 1 diabetes - Multiple sclerosis - Alzheimer's disease - Leukemia
400
Name 5 parts that prokaryotic cells share with most eukaryotic cells?
Cell wall Plasma membrane DNA Cytoplasm Ribosomes
400
Name at least 3 things that Eukaryotic cells have that Prokaryotic cells do not.
Membrane bound nucleus with DNA inside Any of the membrane organelles 80S ribosomes; prokaryotes have 70S
400
What are at least 3 functions of membrane proteins?
Hormone binding sites, cell adhesion, cell-to-cell communication, immobilized enzymes, channels for passive transport, and pumps for active transport
400
What stages make up interphase; what occurs at each stage.
G1: cell grows, DNA is transcribed, proteins formed S: DNA replicates G2: Cell prepares for division
500
In what ways do stem cells differ from most other cells? Name 2 of 4
- are unspecialized- can divide repeatedly to make large numbers of new cells- can differentiate into several types of cells- have large nuclei relative to the volume of the cytoplasm
500
Draw and label a diagram of the ultrastrucure E. coli.
Draw it..
500
Diagram the differences between Animal cells and Plant cells. Name at least 3
Animal/Plant no cell wall / cell wall small vacuole if present/ large vacuole no chloroplasts / chloroplasts cholesterol in plasma membrane / none centrioles / no centrioles stores glycogen / stores starch
500
Draw and label a cell membrane; be sure to include at least 3 types of proteins
include cholesterol, phospholipid bilayer, peripheral protein integral proteins including transport and glycoprotein, carbohydrate attached to protein to form glycoprotein,
500
List all of the stages of the cell cycle in order; include subparts of each main stage.
Interphase (G1, S, G2), Mitosis (PMAT), cytokinesis (during late stage of telophase)
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