biology 1
what is osmosis?
Net movement of water molecules from a high to low concentration across a partially permeable membrane
what is the chemical symbol of the 18th element in the periodic table?
Ar
How do you calculate speed?
Speed = Distance / Time
Where is protease produced?
Small intestine, stomach and pancreas
what are synthesis reactions?
reactions in which multiple reactants combine to make a single product
how does the stomata work?
The guard cells gain or lose water which causes them to become swollen (open) or shrink (closes)
Balance the equation: Fe + Cl2 --> FeCl3
2Fe + 3Cl2 --> 2FeCl3
Speed of something in a given direction
What is velocity?
What prevents your food from going into your lungs when swallowing?
Epiglottis
what is activation energy?
energy needed for reactions to happen
Describe collision theory
When enzymes gain enough kinetic energy to randomly collide in the correct orientation with a substrate
Isotopes with unstable nuclei
What are radioisotopes?
Name all of the energy stores
Kinetic, Gravitational Potential, Chemical, Elastic, and Thermal
What is the 4th step of digestion?
Assimilation
what is electrolysis?
when ionic compounds conduct an electric current because they are made up of charged particles. the charged particles go to the opposite charged electrode
Tube from the stomach to the small intestine
what is a duodenum?
What is the formula for calculating Relative Atomic Mass? (RAM #compsciera)
A = (mass number * percentage) of isotope 1 + (mass number * percentage) of isotope 2 +...
divided by total number of isotopes
How to calculate kinetic energy?
kinetic energy = 1/2 * mass * velocity^2
Describe the process of dental decay
Bacteria reacts with saliva to form plaque -> plaque hardens to form tartar --> sugar on plaque is used by bacteria for respiration which forms an acid --> acid dissolves enamel protecting your tooth and eventually reaches your pulp --> payne and infection
What are large structures of molecules called?
macromolecules
Describe the whole process of blood circulation
From body to vena cava to the right atrium to the valve right to the right ventricle to the valve to the pulmonary artery to the lungs to the pulmonary vein to the left atrium to the valve to the left ventricle to the valve to the aorta and then back to body #slaythehousebootsdownhoustonimdeceased
What are protons relative charge?
Positive
Mass * acceleration
What is the formula for force by acceleration?
What is emulsification?
Who first arranged the elements in the periodic table by atomic mass?
John Dalton