Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
45 Cards in this Set
- Front
- Back
|
Prokaryotes
|
Bacteria and Archae
Unicelular Contain no nucleus DNA is suspended in cell interior without separation Both Bacteria and Archae live as producers and decomposers |
|
|
Population
|
a group of individuals of the same species living in a particular area
|
|
|
Community
|
different populations living in an area
includes different species |
|
|
Nuetron
|
has no charge (nuetral)
the number of neutrons can vary but are often the same as protons variations of an element based on the number of neutrons are isotopes has a mass unit of one(same as protons) # of neutrons=atomic mass-protons |
|
|
Emerging property of life
|
happens at the cell level of organization
|
|
|
Kingdoms
|
Protists
Fungi Plantae Animalia |
|
|
3 domains
|
Bacteria (prokaryotes)
Archea (prokaryotes) Eukarya |
|
|
Table of Elements
|
Listed in order of atomic number
Rows indicate # of energy shells columns indicate # of electrons |
|
|
Electrons
|
negative charge
paired in shells - 2 in first, 8 max in the rest the electrons furthest from the nucleus have the most energy |
|
|
Valance
|
The outer shell of an element
|
|
|
Metabolism
|
The sum of all chemical reactions that occur in the body
The activity of obtaining and using energy to grow and reproduce 2 primary metabolic processes are photosynthesis and cellular respiration |
|
|
Characteristics of Living Systems
|
Organization
DNA Metabolism Energy flow(released as heat(lost)/recycled matter within biosphere Receptors / reactions for survival Reproduction Evolution |
|
|
Atom
|
The smallest unit of an element
Can't be broken down into any other substance Atoms are electronically neutral |
|
|
Proton
|
Positive charge
Number of protons identify the element Equal to the number of electrons Has a mass unit of one (as does neutron) |
|
|
Element
|
All living and non living things are made up of elements
There are 92 natural elements A pure substance that can not be broken down into simpler substances by chemical or physical techniques |
|
|
Classifications
|
Domain
Kingdom Phylum Class Order Family Genus Species Do Kings Play Chess On Fiber Glass Seats |
|
|
Do Kings Play Chess On Fiber Glass Seats
|
Domain
Kingdom Phylum Class Order Family Genus Species |
|
|
6 Most Abundant Elements in Organic Matter
|
Sulfur
Phosphorus Oxygen Nitrogen Carbon Hydrogen SPONCH |
|
|
SPONCH
|
Sulfur
Phosphorus Oxygen Nitrogen Carbon Hydrogen |
|
|
Catabolic Reaction
|
Breakdown-Starts out with large molecules and breaks down into smaller
Releases Energy |
|
|
Organelles
|
made up of macromolecules
|
|
|
Anabolic Reaction
|
Build up.
Start off small and makes lager Requires energy |
|
|
Macromolecule
|
lipids
Proteins Carbs Made up of molecules which are made up of atoms |
|
|
Level of Organization
|
Atom
Element Molecule Macromolecules Organelles Cell Tissue Organ Organ System Organism Populations Community Eco System Biosphere |
|
|
Isotope
|
Different variations of an element
They differ in the amount of neutrons Most isotopes are unstable and do not exist for very long Radioactive Used as a tracer Used in radiometric dating (half life) |
|
|
Molecule
|
2 or more elements bonded together
An arrangement of atoms ie:H2O |
|
|
Compound
|
Molecule composed of 2 or more different elements
The molecule differs GREATLY than the actual individual elements |
|
|
2 Branches of Metabolism
|
Catabolic
Anabolic |
|
|
Covalent Bond
|
Shares one or more electron
|
|
|
Polarity
|
A difference in electrical charge across a molecule
(Positive at one end and negative on the other) |
|
|
Cation
|
Positively charged ion
|
|
|
Anion
|
Negatively charged ion
|
|
|
Dalton
|
Mass unit of one
|
|
|
Atomic Weight
|
The sum of Protons + Neutrons
|
|
|
Ionic Bond
|
Form between atoms that gain or lose and electron completely.
The difference in charges (Cation and anion) create an attraction. |
|
|
Non polar covalent bond
|
A bond with equal sharing of electrons
|
|
|
Polar covalent bond
|
When one atom is greedy and spends more time with a shared electron
|
|
|
Hydrogen bond
|
a weak bond that forms when a covalently bound H is attracted to a (-) atom
|
|
|
Cohesive
|
When 2 of the same molecules are attracted to each other.
ie: waters magnetic attraction to other water molcules |
|
|
Properties of water
|
High surface tension
Low freezing point High Boiling point Ice is less dense than liquid water Because it's polar, it can dissolve polar substances |
|
|
Oxidation
|
to Lose an electron or hydrogen
|
|
|
Reduction
|
To gain an electron or hydrogen
|
|
|
OH
|
Hydroxide
|
|
|
Most acidic pH
|
1 on a scale from 1-14
Higher concentration of H+ |
|
|
Most basic pH
|
14 on a scale from 1-14
Lower concentration of H+ Higher in -OH |
