Chemistry
Water 1
Water 2
Enzymes 1
Enzymes 2
Characteristics of Life
100
These two particles make up the nucleus of an atom.
Protons and neutrons
100
What are the chemical components of a molecule of water?
2 hydrogen atoms and 1 oxygen atom
100
Water is sticking to other water molecules is known as?
Cohesion
100
Enzymes end in what three letters?
-ase
100
Define product
The substance that results from a chemical reaction
100
List the 7 characteristics of life.
Organization, Homeostasis, Respond to a Stimulus, Growth/Develop, Metabolism (energy), Reproduction, Change over Time
200
What are the 3 charges of the particles that make up an atom?
Protons - positive
Neutron - Neutral
Electrons - negative
200
What is the difference between cohesion & adhesion?
cohesion: an attraction between molecules of the same substance
adhesion: a force of attraction between different kinds of molecules
200
The hydrogen end of water has a
slight positive charge
200
Define active site
The place where the substrate binds
200
Define Allosteric Site.
When a Noncompetitive inhibitor changes the shape of the enzyme, so the substrate cannot bind to the enzyme.
200
What is homeostasis?
Maintaining stable internal conditions
300
Letter D is the mass number of an element that tells you the average mass of the isotopes of the element. It also tells you the number of ____________ and ____________ in the nucleus of the atom
protons and neutrons
300
Water rising in a tube is an example of what property?
capillary action
300
The oxygen end of a water molecule has a
slight negative charge
300
Define denature (as it relates to enzymes)
Anything that changes the shape of an enzyme
300
Define activation energy
The amount of energy it takes for a chemical reaction to occur
300
Humans eat food to get this characteristic of life
Energy?
400
What two particles in an atom are equal in number.
electrons and protons
400
This causes water to stick to other polar substances besides other water molecules.
adhesion
400
Why are water molecules attracted to each other?
because of polar bonding
400
Identify the type of inhibition that is taking place. Also, describe this process.
Competitive inhibition. Enzyme active site is blocked causing the substrates unable to bind to the active site.
400
What are four factors that have an effect on enzymes?
pH, Temperature, Salinity, Substrate Concentration
400
What is an example of response to stimuli to maintain homeostasis?
cold = shiver
hot = sweat
hot dog = panting/tongue sweating
500
These are atoms with the same number of protons but different numbers of neutrons. (Hint: Same element; different mass)
Isotope(s)
500
Which property of water allows a water strider to walk on the surface of the water?
Cohesion or Surface Tension
500
What type of bond is formed from the attraction between the positive end of one water molecule and the negative end of another water molecule?
a hydrogen bond
500
Identify the type of inhibition that is taking place. Also, describe this process.
Noncompetitive inhibition. Something other than substrates binding to the alleostric causing the enzyme to change it shape; substrates are not able to bind to the active site.
500
An enzyme is a catalyst used by living things to promote and regulate chemical reactions. What is the most likely enzyme for the chemical reaction depicted below?
B
500
List the levels of organization starting with Atoms
Atoms, Molecules, Organelles, Cells, Tissues, Organs, Organ Systems, Organism