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Cellular anatomy
Question | Answer |
---|---|
How many cells are in the body | 50-100 trillion cells |
What are cells mainly composed of? | C, H, N, O |
What are the three basic parts of of a cell | Cell membrane, cytoplasm, nucleus |
Two kinds of endoplasmic reticulum | Rough and smooth |
Why is rough endoplasmic reticulum rough? | Ribosomes |
What do ribosomes do | Make proteins and sends the to the smooth er |
What does the smooth endoplasmic reticulum do | Organizes proteins given by the rough er to send to Golgi apparatus |
Exocytosis | Golgi releases protein to the outside of the body |
Integral protiens | Firmly inserted into the membrane, Transports protiens |
Peripheral protiens | Loosely attached to integral proteins |
What is the function of peripheral protiens | Enzymes, motor protiens, cell to cell links, cell recognition |
Three types of membrane junctions | Tight junctions, Desmosomes Gap junctions |
What is a tight junction | Prevents fluid and molecules from moving between cells |
What is a desmosome | Rivet that holds cells together |
What is a gap junction | A pore that allows small molecules to pass from cell to cell, Spreads ions between cardiac or smooth muscle cells |
What is tonicity | The ability of a solution to cause a cell to shrink or swell |
When a cell shrinks in tonicity | Hypertonic |
When a cell swells in tonicity | Hypotonic |
What is osmosis | The balancing of solute and solvent |
What kind of transport uses osmosis | Passive transport |
The cell neither swells or shrinks | Isotonic |
What is the fluid in between the nucleus and the membrane | Cytoplasm |
Two types if organelles in cytoplasm | Membranous and nonmembranous |
What is the head part of the phospholipid unit? | Polar and hydrophilic |
What is the tail part of the phsopholipid unit | Nonpolar and hydrophobic |
Function of membrane protiens | Regulation, Moter proteins, Enzymes, Cell to cell links |
How many different types of cells are there in the body | 200 |
Cells consists of what elements | C,H,O,N |
6 properties of water | Hydrolysis and dehydration reactions, Major transport medium, High heat vaporization, High heat capacity, Neutral pH |
What part of a cell synthesizes lipids and detoxifies toxic chemicals | Smooth endoplasmic reticulum |
Production of glycogen from glucose is what kind of reaction | Synthesis |
Vessicles | Cavities |
Does mitosis or meiosis occur in all cells in the body | Mitosis |
Meiosis affects | Sex cells |
How many cells does mitosis make? | 2 |
In meiosis I how many chromosomes are passed to the daughter cell | 23- half |
In meiosis II how many chromosomes are passed to the second set of daughter cells? | 23 |
How many chromosomes are passed to the daughter cells in mitosis | 46 |
How many cells does meiosis make? | 4 |