Chapter 1
Group in which the variable does not change
Control group
desribe the structure of an atom
protons and neutrons in nucleus
electrons in cloud/outside
which side of the arrow are the reactants on in a chemical equation?
left
type of macromolecule that provides energy, made up of carbon, hydrogen, and oxygen, an example is bread and grain
carbohydrate
describe the primary structure of a protein
amino acid chain
Variable that depends on the value of another variable
dependent variable
a pure substance formed when two or more different elements combine
compound
what is the purpose of adding an enzyme (or catalyst) to a reaction
speed up reaction
what subunits make up proteins
amino acids
name a function of lipids
make plasma membrane, store energy,
list 4 things that denote an organism is living
respond to stimuli, growth, movement, reproduces, made up of cells, displays organization, homeostasis, requires energy, adapts/evolves
type of bond that shares electrons
covalent bond
what is meant by polar molecules?
opposite charges attract
what is the difference in saturated and unsaturated fats?
saturated fats have single bonds only
unsaturated fats have double bonds
what is the function of nucleic acids?
store genetic information
Ecologist who is known for her work with chimpanzees
Jane Goodall
a charged particle
ion
what is the difference in a homogenous and hetrogenous mixture
homogenous- same throughout
heterogenous- components remain distinct
which part of the lipid is hydrophobic
tail
what makes something organic?
made up of carbon
what is the difference in an observation and an inference?
an observation is something you actually see
an inference is a logical conclusion drawn from the observation
isotopes
why is water considered a polar molecule?
oxygen is negatively charged while the hydrogens are postively charged
what are the 4 nucleotides in DNA
A, T, C, G
what is the difference in a endothermic reaction and exothermic reaction
endothermic- the energy of the products is higher than the energy of the reactants