Chapter 1-2 Flashcards
Science
Knowledge
Observation
Gathering information
Data
Information
Inference
Prior knowledge
Hypothesis
An educated guess
Spontaneous generation
Life from non life
Controlled experiment
One variable changed
Manipulated variable
Deliberately changed
Responding variable
change in manipulated variable
Theory
Well supported hypothesis
Biology
Study of life
Cell
Smallest unit of life
Sexual reproduction
Two parents
Asexual reproduction
One parent
Metabolism
Breaking down/building up
Stimulus
Response signal
Homeostasis
Eternal condition stays constant
Evolution
Change
Metric system
A decimal measurement system
Microscope
See small things
Compound light microscopes
Uses light to see
Election microscopes
Image made of electrons
Cell culture
One cell to many
Cell fractionation
To separate cell parts
Atoms
Matter
Nucleus
Protons and electrons
Electrons
Negativity charged particle
Element
substance with one atom
Isotopes
Same protons; different neutrons
Compound
Substance formed by two elements
Ionic bond
Two electrons transferred
Ions
Positively and negatively charged atoms
Covalent bond
Elements share with atoms
Molecule
Small unit
Van der Waals forces
Weak covalent bonds
Cohesion
Attraction with the same substance
Adhesion
Attraction with different substance
Mixture
two or more; physically combined
Solution
Evenly distributed components
Solute
Dissolved substance
Solvent
makes the solute dissolve
Suspension
Mixture; non dissolved material(Italian dressing)
pH scale
Measurement of H+ ions
Acid
H+ions
Base
Produces hydroxide ions
Buffers
Weak acids reacting to strong ones
Monomers and polymers
Small units that join to create polymer
Carbohydrates
Quick energy; 1:2:1(CHO)
Monosaccharides
Singular auger molecules
Polysaccharides
Large macromolecules formed down monosaccharides
Lipids
Fats, oils; gradual energy
Nucleic Acid
DNA/RNA; makes proteins
Nucleotides
5-carbon sugar, a phosphate group, and nitrogenous base
Ribonucleic acid and deoxyribonucleic acid
The two different nucleic acids
Proteins
AA; muscle, hormones
Amino acids
Proteins that are polymers of molecules
Chemical reaction
A process of change to one set of chemicals
Reactants
Things that create a chemical reaction
Products
Elements or compounds produced by chemical reaction
Activation energy
Energy needed for a reaction
Catalyst
Substance speeds up the rate
Enzymes
Proteins act as biological catalyst
Substrates
reactants