major themes and chemistry of life Flashcards
methods for examining the human body
inspection
palpitation
auscultation
percussion
looking
touching
listening (stethoscope)
tapping; hollowness
what is exploratory surgery
something goes wrong and youre opened up
what is gross anatomy
models/ big pic
histology
microscope anatomy
histopathology
tissues in the diseased state
cytology
how cells regulate in an environment
ultrastructure
electron microscopy
what is comparative physiology
how things function in different species
hierarchy of complexity (least to most) (8)
atoms
molecules
organelles
cells
tissues
organs
organ systems
organism
what are 6 factors under homeostatic control
body temp
oxygen level
ph of body fluids
salt content
blood glucose
metabolic waste (CO2)
what is the ability to detect change and regulate that change within narrow limits
homeostasis
negative feedback allows for ______ equilibrium
the limited range is called a…
dynamic
set point
what type of feedback is when something changes in one direction and a reaction is triggered to reverse that change
negative feedback
what is a structure that detects changes in the body
receptors
what is the center that processes sensory information
integrating (control) center
what is a cell or organ that carries out a final corrective action
effector
what is a self amplifying type of feedback system
positive feedback loop
what percentage of homeostatic processes occur via a positive feedback loop
10%
what are 3 examples of a positive feedback loop
childbirth
blood clotting
protein digestion
movement “up the gradient” requires..
spending metabolic energy
what are 3 different gradients
concentration
electrical
thermal
the same 6 elements make up ____% of body weight
98.5
what are 3 reasons electrolytes are important
chemical reactivity
osmotic effects
excitability of nerves and muscles
what percentage of our body is made of water
50-75
what type of bond is easily broken by water
ionic
what are bodily fluids classified as
mixtures
what is a mixture
physically blended but not chemically combined
what is solvency
what is water’s nick name
ability to dissolve other chemicals
universal solvent
what is adhesion
one substance clinging to another
what is cohesion
one substance clinging to itself
what is a proton donor
acid
what is a proton acceptor
base
is the pH of blood slightly acidic or basic
basic
what are chemical solutions that resist changes in pH
buffers
what property of water do metabolic reactions depend on
solvency
pH is the _____ ____ pf hydrogen ion molarity
negative logarithm
definition of energy
capacity to do work
what is the definition of work
the ability to move something
what is the first law of energy
every can not be created or destroyed
what is the second law of energy (2)
entropy continuously increases in a closed system.
to “reverse” entropy, energy input is required
what is metabolism
the sum of all chemical reactions in the body
what is catabolism
exergonic/ breaks down complex things into simpler things to release energy for work
what is anabolism
requires energy input to “put things back together”
_____ is driven by energy released by ______
anabolism
catabolism
what is oxidation
does it release or require energy
molecule gives up electrons and
releases energy
more positive charge
what is reduction
does the molecule gain or lose energy
how are e- transferred in this way
molecule gains electron and energy
hydrogen atoms
how are redox reactions coupled
oxidation of one molecule is always accompanied by the reduction of another molecule
what determines the properties of an organic chemical
functional groups
what are the monomers of nucleic acids
nucleotides
what are the monomers of carbohydrates
monosaccarides
what are the monomers of lipids
fatty acids
what are the monomers of proteins
amino acids
carbohydrates hydro____
phillic
what is the ratio of hydrogen to oxygen in carbohydrates
2:1
what is the root word meaning carbohydrate
glyco
lipids are hydro_____
phobic
what has more calories per gram than carbohydrates
lipids
what are the 5 kinds of lipids in the body
fatty acids
triglycerides
eicosanoids
steroids
phospholipids
the term to describe phospholipids hydrophilic and hydrophobic nature
amphipathic
what 4 components make up a protein
central carbon
amino group
carboxyl group
radical group
what structure is a chain of amino acids joined by peptide bonds
primary
what is structure is an alpha helix or beta sheet joined by hydrogen bonds
secondary
what structure is the folding and coiling due to interactions among and between r groups and surrounding water
tertiary
what structure is the association of two or more polypeptide chains with each other
quaternary
-
-
what do substrates bind to
an enzymes active site
how do molecules form an enzyme-substrate complex
specificity // lock and key
what do enzymes release upon binding to a substrate
reaction products
what to enzymes lower
activation energy
what is a cofactor
a nonprotein chemical that makes a protein fold into a shape that can be reached by an enzyme
what is a coenzyme
organic cofactors that accept electrons from an enzyme and transfer them to another
what are the three components of nucleotides
nitrogenous base
sugar
phosphate group
what type of molecule is ATP
a nucleotide
what is the ATP equation (2–>3)
glucose + 6 oxygen = 6 carbon dioxide + 6 water + energy (ATP)
how many ATP are made per glucose in anerobic respiration
2
during aerobic respiration, how many ATP are made per glucose molecule
32