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Bio 101 Test 1 with quiz 1
Bio 101 with Joyce Tamashiro
54
Biology
02/01/2009

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Term



Scientific Process
Definition


Observation
Question
Formulate Hypothesis
Experiment
Collect Data
Design
Analyze
Term



Experimental
Definition


manipulative, composition of groups, control
Term


Correlational
Definition

observational, doesn't fully demonstrate cause and effect
Term


Clinical Trials
Definition


Phase I- Is it safe?
Phase II- Does it work?
Phase III- "comparison with other treatments"
drug to market
Phase IV- rare side effects start to resurface

Term


Evaluating studies
Definition


long term affects, nature of the study, side effects
Term


small intestines
Definition


breaks food into molecules which can be absorbed into the blood stream
Term


eukaryotic
Definition


has nucleus and other organelles
Term


prokaryotic
Definition


doesn't have a nucleus
Term


golgi apparatus
Definition


package proteins for secretion
Term


rough endoplasm riticulum
Definition


synthesis proteins for secretion
Term


specialization in a progression
Definition


fertilized cells- unlimited potential
embryonic stem cells- pluripotent
adult stem cells- multipotent- limited range
Term


Epithelial
Definition


covers bodies surfaces (skin), lines body cavities and hollow organs

functions- protection, absorption, secretion, sensory function
Term


connective tissue
Definition


functions- transport, connection and structural support, support (bones and cartilage), storage (fat), defense

common features- blood vessels, cells are usually supported by matrix either liquid (blood) or mineral based (bone)
Term



Muscle
Definition

movement by contraction, lots of proteins
Term


nervous

Definition

communication
Term


Stomach
Definition

function of stomach-
-breakdown of food particles- muscle
-start chemical digestion of proteins
-muscle secretion
Term


Stages of digestion
Definition

ingestion, digestion (mechanical, chemical), absorption, elimination
Term


covalent bonds
Definition

strongest bond in the presence of water

stable and long term like maariage
Term


hydrogen bond
Definition


transient, weak

like flirtation
Term


polarity
Definition


distribution of electrons in molecules
Term


Interactions with water
Definition


hydrophilic- mixes with water = polar
hydrophobic- water fearing, repelled by water
Term


carbohydrates
Definition


fuel, hydrophilic- polar, monomer sub unit
Term


Lipids
Definition

fuel, storage from adipose tissue, structure builds cell membranes (fatty acids, saturated fats- solids, unsaturated - liquid
Term


Proteins
Definition


functions- structure (catilidge), movement (muscle), enzymes

structure- monomer amino acids, polymer- protein, variable chemical properties
Term


enzymes (catalyst)
Definition


enzymes speed up chemical reactions, enzymes physically grab substrate, are specialized
Term


Goals of metabolism
Definition


energy harvesting, obtain raw materials to build own molecules
Term


obtaining energy for food
Definition


carbs--> sugar
fats--> fatty acids
proteins--> amino acids

cellular respiration
fermentation

Term


Obtaining energy from light
Definition


photosynthesis

carbon dioxide + water + light energy + sugar
Term


cell
Definition


fundamental structural unit of life
Term


plasma membrane
Definition


defines the outer boundary of each cell
Term


essential amino acids
Definition


amino acids which your body cannot synthesize
Term


ATP (adenosine triphosphate)
Definition


energy currency of cells
Term


willets system
Definition


cohort- correlational, randomized- experimental, case control- correlational, metabolic study- experimental
Term


digestion of lipids
Definition


small intestines
Term


digestion of proteins
Definition


stomach, small intestine
Term


cellular respiration
Definition


occurs in the mitochondria, C6H1206 + CO2 ---> O2 + H2O +ATP
Term


gastrula- stage embyro
Definition


tissues: estoderm- outer layer gives rise to the skin
mesoderm- gives rise to muscle
endoderm- lines alimentary canal
Term


Interphase
Definition


G1, S, G2

DNA is replicated in the S phase
Term


Prophase
Definition


nuclear envelope disappears, microtubular spindle forms, chromosomes condense
Term


Metaphase
Definition


spindle attached to replicated chromosomes and lines them up at the center of the cell
Term


Anaphase
Definition


replicated chromosome splits at centromere, unreplicated chromosomes "daughter" move to poles
Term


Telophase
Definition


nuclear envelope reforms, chromosomes decondense/ extend, spindle breaks down
Term

mitochondria
Definition


organelles which products of the digestive system are converted to ATP
Term


cytokinesis
Definition


divide the cytoplasm

form into two daughter cells
Term

Regulation points
Definition

"check points" cell division signals or growth factors or DNA damage
Term


beginning of cancer
Definition


-changes in DNA can alter regulation of cell division
- genes involved in detection and response to growth factors
- gene important for detecting DNA damage
Term


Cancer progression
Definition


-unregulated growth and loss of differentiation
-initially lend to benign tumors
-malignant tumor
"metastasis spread to other locations
Term


stem cells
Definition


cells which are capable of indefinite division for any type of cell
Term


plasma membrane
Definition


structure that encloses a cell, defining its boundaries
Term


DNA replication
Definition


occors in Interphase and is in extended form
Term


microtubule
Definition


contracts and separates from each other pulling the sister chromatids to the two different poles
Term


fertilized eggs
Definition


unlimited potential for specialization
Term


embryotic stem cells
Definition


pluripotent- lots of possible destinies
Term


adult stem cell
Definition


multipotent- limited range