Cells
What is the sequence of levels forming the structural hierarchy?
Chemical, cellular, tissue, organ, organ system, organism
Which feedback mechanism increases deviations from the norm and away from homeostasis?
Positive FBM
What is homeostasis?
Maintenance of relatively stable internal conditions despite continuous changes in environment, dynamic state of equilibrium
What is matter?
Solid, liquid, gas
anything that occupies space and has mass
What is a compound?
Specific molecule that has 2 or more different kinds of atoms bonded together
What is the structural and functional unit of life?
CELLS
What is a plasma membrane and what is it comprised of?
Outer boundary of the cell which interacts with outside environment
comprised of membrane lipids
What are the smallest particle of an element that still has the chemical characteristics of that element?
Atom
Oxygen, hydrogen, nitrogen, carbon
What are the requirements of life?
Maintaining boundaries, movement, responsiveness(excitability), digestion, metabolism, excretion, reproduction, growth
True or False: the efferent pathway comes from the receptor.
False, Comes from the Control Center
Give me an example of a NFBM
Low BP, low HR etc.
Name the functions of the Integumentary System
Provides Protection, helps produce vitamin D, houses cutaneous receptors, contains sweat and oil glands
What kind of chemical reaction breaks bonds?
Decomposition
Explain Oxidation-Reduction reactions
Oxidation = loss of electrons
Reduction = gain of electrons
What is the outer boundary of the cell which interacts with outside environment?
Plasma Membrane
What is hydrophilic?
“Head” is water loving and polar and faces both surfaces (inner and outer)
Tell me the difference between ionic and covalent bonds.
In ionic, electrons are transferred b/w atoms, creating oppositely charged ions
In covalent, atoms sharing two more valence electrons b/w them
True or False: all chemical reactions of irreversible.
False, some are reversible
Name the functions of the skeletal system
Provides protection and support, allows body movement, produces blood cells, stores minerals and fats
What are the five functions of water in living organisms?
High heat capacity, High heat of vaporization, reactivity, cushioning, polar solvent properties
What is hydrophobic?
“Tail” Is water-hating and non-polar And crowd together b/w heads
What are the components of the plasma membrane mosaic?
Cholesterol, Glycolipids
What are the types of transport proteins?
Channel proteins, carrier Proteins, ATP-powered pumps
What are the types of passive transport mechanism?
Diffusion - simple diffusion, carrier/channel-mediated facilitated diffusion, osmosis
filtration