UNIT 1 Biology Test Flashcards
The number of _______ determines the bonding.
electrons
Atoms with a diff number of electrons are called _______-
ions
atoms with a diff. number of neutrons are called ___________
isotypes
Order the levels of organization
atom-molecule-cell-tissue-organ-organ system-organism-populations-community-ecosystem-biosphere
Describe how water is a polar molecule
The polarity (positive or negative charge) allows it to make hydrogen bonds—> this allows one water molecule to bond with 4 others.
Cohesion
water molecules bonding to other water molecules
adhesion
water molecules sticking to something other than water molecules
surface tension
water molecules linking together on the surface of a body of water
high heat evaporation
large of amount of water is required to change water from a liquid to a gas.
water is less dense as a solid
when water reaches a certain temp (4 c) the hydrogen bonds changes angles plus molecules get further apart.
Carbohydrates
monomer
function
examples
-monosaccharides
-energy and storing energy
-glucose,starch,cellulose, glycogen
What type of bond forms a water molecule
hydrogen
lipids
-monomer
-function
-examples
-carbon backbone
-insulation, protection, storing energy, structure
-fats, oilds, waxes, steroids, cholestroral
protein
-monomer
-function
-examples
amino acids
-proteins?
-hari, fingernails, insulin, and hemoglobin.
Nucleic acids
-monomer
-function
-examples
-nucleotides
-genetic info, and decoding information
-DNA and RNA
List elements for each macromolecules
carbohydrates-CHO
Lipids-CHO
Protein-CHON
Nucleic Acid-CHONP
Polar molecules carry __________ electrical charges at each ends of the molecules becuase of _________ sharing of electrons.
Non polar have ______ sharing of electrons so they have no charge.
uneven
unequal
equal
What are the 6 properties of water that make is so unique?
Cohesion, Adhesion, surface tension, high heat vaporization, water is less dense as a solid, and water dissolves other polar substances.
What is matter
anything that takes up space and has a mass.
Most common elements are
Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, and Sulfer
Characteristics of living things are…
-organization
-response to stimuli
-homeostasis
-metabolism
-ability to grow and develop
-ability to reproduce.
Covalent bonds is the ____ bond that results from sharing electrons between elements to fill outer shell equally. they are bonds between 2 _______ ________
strongest
2 non-metals
Organic compound is
compound contains carbon
Carbohydrates end in _____
OSE!
Polar molecule–>
Non polar moelcule—>
water
carbon, oxygen
Homeostasis example
water, temp, chemichal
Cohesion is_______ molecules bonding to other ________ molecules
water, water
