Variations are differences among members of a species. Genetic variation increases the
likelihood of a population's adapting to new or changing environmental conditions.
Multicellular organisms evolved a few hundred million years after the evolu
Forms a strong barrier between the cell and its surroundings.
What does the cell membrane regulate?
What enters and leaves the cell and
Also protects and supports the cell.
Properties of lipids
2 main portions
Passive transport - diffusion
As a result of molecules moving constantly, colliding with one another and spreading out
randomly, the particles tend to move from an area where they are more concentrated to an
area where they are less concentrated.
Unit 3a: origin of life
Abiogenesis vs biogenesis
Origins of the earth
Big bang theory, formation of the oceans
Composition of the atmosphere and conditions of primitive earth
Theory of chemical evolution: oparin & haldane and miller & ureys experiment
Hydrolysis vs. (dehydration) synthesis:
Definitionthis is when reactants and products of each process for carbohydrates, lipids
and proteins and nucleic acids.
Which one builds polymers from monomers and which one breaks down polymers into
Growth vs Development
Asexual vs. Sexual reproduction
Unicellular vs. Multicellular (and examples of each)
Autotrophic vs. Heterotrophic (and examples of each)
Importance of dna as the genetic material of the cell
Concentration of solutes and solvent in a solution
Identify isotonic, hypotonic and hypertonic solutions
Given a specific example, identify the type of solution in relation to a cell, predict the
direction of water movement and the result on the cell. Pra
Chemical formulas, equations, reactions
Know that in a chemical reaction, bonds in the reactant(s) are broken, atoms are
rearranged, and new bonds are formed in the product(s)
Molecule vs. Compound
Coefficients, subscripts, arrow, reactant vs. Products
Most biological membranes are selectively permeable, which means
Some substances can pass across the membrane and others cannot!
Aka- semipermeableHow would the following materials move through the cell membrane?
Moves easily by osmosis
Move easily across
Activation energy definition, importance when discussing enzymes
Effect of changes in temp and ph on enzyme activity
Why denatured enzymes dont work (remember: form leads to function!)
How enzymes are named (-ase)
Acids and bases: