BSC1020 Test 1 (set 1)
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Created by:
MyDarkling on September 14, 2008
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Description:
The facts for the first part of the first test in BSC1020, Human Biology, at Daytona State College.
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49 terms
Terms | Definitions |
|---|---|
 theory | a testable idea that is broad in scope and supported by a large body of evidence |
| hypothesis | specific testable statement, based on a theory |
| conclusion | results from testing a hypothesis |
| life is basically... | a perfect balance of chemical reactions |
| we're made of: | mostly carbon, hydrogen, oxygen |
| carbon is ... | the basis for almost every chemical in the body |
| water | most common inorganic chemical in the body |
| organic | containing carbon |
| water does this: | sets blood pressure, is part of all bodily fluids, gives cells their shape |
| pH | the amount of positively charged hydrogen ions in a solution (acidic/basic) |
| acid | H+ is high and tends to attack molecules |
| basic / alkaline | very few H+ in a solution and tends to steal H+ from other molecules |
| pH scale - acidic | low pH |
| pH scale - neutral | pH of 7 |
| pH scale - basic | high pH |
| kidneys | main organs involved in regulating blood pH |
| kidneys constantly... | remove excess acid or base |
| chemicals are made of | atoms and molecules |
| atom | smallest possible piece of an element |
| molecule | made from two or more elements |
| carbohydrates | saccharides/sugar/glucose-favorite |
| lipids | phospholipids / cholesterol |
| "good" cholesterol | HDL, removes excess |
| "bad" cholesterol | LDL, transports cholesterol for storage |
| proteins | made of amino acids |
| how many amino acids? | 20 |
| essential amino acids? (#) | 9 |
| things made of proteins: | enzymes, muscles |
| cholesterol, building block of: | some steroids |
| membrane of every cell made of | fat |
| nucleotides | AT GC and U |
| nucleotides combine to form | DNA |
| ATP | energy of everything in the body, 3 phosphate groups |
| food is used to reset ATP by... | mitochondria |
| cells come from | preexisting cells of the same kind |
| all cells are essentially | the same |
| nucleus (of a cell) | contains DNA |
| DNA is made from a long string of | nucleotide molecules |
| cytoplasm | fluid outside the nucleus |
| cytoplasm contains | organelles |
| ribosomes | read nucleotide sequences and build proteins |
| rER (rough endoplasmic reticulum) | binds ribosomes / where protein assembly begins |
| golgi apparatus | site of final protein assembly and packaging |
| mitochondria make | ATP |
| the more mitochondria, | the more active the cell |
| plasma membrane | lipid bilayer (that outer layer of fat) |
| cilia | flush plasma membrane surface (using ATP to move like hairs) |
| flagella | control cell motility (like sperm) |
| villi | increase surface area but do not move or use ATP |
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