Experimental Design
things in an experiment that we do not change
constants
type of bond that results in SHARING of electrons
covalent
means water can stick to other water molecules. important in formation of bodies of water
cohesion
name the 4 macromolecules
carbs, lipids, proteins, nucleic acids
define monomer
building block to make polymers
variable that changes
dependent
smallest unit of matter
bond between the hydrogen and oxygen within the same water molecules
genetic material
give an example of a source of protein
meat
the variable that researchers manipulate
independent
negatively charged particles
electrons
what does "high specific heat" mean when referring to water
water does not change temperature easily
what are the monomers of carbohydrates
mono-, di-, or poly- saccharides
acids range from ___ to ___ on the pH scale
1-6
define a scientific theory
an explanation of something in the natural world
weak bond between a hydrogen and an electronegative atom
hydrogen bond
explain why ice being less dense than water is essential to life
ice floats on top of bodies of water, rather than sinking and freezing the entire body of water.
life can survive in the water flowing beneath the ice
3D folding
what do enzymes do
lower the activation energy needed for a reaction to occur
List 5 characteristics of life
metabolism, made up of cells, response, growth and development,
pure substance that cannot be broken down any further
element
oxygen is very ____ meaning that it has a higher affinity for electrons than most other elements
electronegative
what is the function of lipids
creates cell membrane, creates some hormones
define metabolism
all the chemical reactions in a cell