Flashcards in Unit 1 Test Deck (59):
What are the 5 characteristics of life for all living organisms?
Cellular, Replication, Evolutional of populations, Genetic, info, and acquire and use energy.
Who invented the first microscope?
What is spontaneous generation?
The theory that organisms could arise spontaneously under non living things
What is the term "fitness" mean in natural selection?
Ability for an individual to survive and reproduce.
What are the 3 main subatomic particles?
Protons, Neutrons, and Electrons.
Element with different amount of neutrons
Electrons moving in specific regions
Made up of protons and neutrons
Can not be broken down further without energy
What are the Elements found in living organisms?
Hydrogen, Carbon Nitrogen, Oxygen, Phosphorus, and Sulfur.
What is atomic #?
# of protons (# of Electrons)
What is Atomic Mass?
Protons + Neutrons
How many electrons go in the first shell?
Substance held together by covalent bonds
Protons # and types of atoms
Seeing the structure and bonds
What are the 4 types of Chemical bonds?
ionic bond, nonpolar covalent bond, polar covalent bond, and hydrogen bond.
Atom has no charge
Atoms have a partial charge
weak electronic attraction
What is a spontaneous reaction?
when a reaction is able to proceed on its own without external energy
spontaneous, energy released, entropy increases
Amount of disorder
Energy input required, entropy decreases
1st Law of Thermodynamics
Conservation of energy, energy nor created nor destroyed
2nd Law Entropy
Disorder in system, tendency towards chaos
What are the properties of water?
Versatile solvent, Cohesion (surface tension), Adhesion (binds unlike molecules), and Thermal Blanket.
What is an Organic molecule?
Contain a carbon bonded to it
Same molecular formulas but different structures
Small molecule covalently bond to others to make bigger molecules
Monomers bonded together
2 molecules that are Identical or different
removal of OH and H to form water
water splits the molecule
What are the 4 levels of protein structure?
Primary (DNA to RNA to Protein Structure), Secondary (elasticity), Tertiary (3D structure), and Quaternary.
Features of DNA
Double Strand, OH, Big, Thymine
Features of RNA
Single Strand, H, Small, Uracil
Six functions of Protein
Catalysis, Defense, Movement, Signaling, Structure, and Transport
What did Chargaff contribute?
A=T and G=C
Rosalind Franklin contribution?
Helical Shape, 3.4nm distance
Maurice Wilkins contribution?
James Watson and Francis Crick contribution?
Importance of complementary base pairing?
Allows for easy DNA replication
3 major classes of lipids
Steroids, Triglycerides, Phospholipids
What is an amphipathic molecule?
Having a polar hydrophilic, and a non polar Hydrophobic
What is selective permeability?
Lets certain molecules in and out
What is "concentration gradient"
High to Low concentration
Process of Osmosis
Diffusion of water
Low solute, High solvent
High solute, Low solvent
What is Fluid Mosaic Model?
Mixture of phospholipids and different types of proteins that move amongst each other
What is integral proteins?
Span of the membrane, inside
On the side of the membranes
No energy required
Movement of substance through membrane