1 Flashcards
Seven properties of life
Order Reproduction Growth and development Energy processing Response to the environment Regulation Evolutionary adaptation
Life hierarchy order. List from the broadest category to the category “organ”.
Biosphere Ecosystem Community Population Organism Organ system Organ
Fungi
Organisms who decompose other dead organisms and organic waste, absorbing nutrients into cells
Animal is
Ingest other organisms
Plantae
Photosynthesize
Archaea?????
Prokaryotic cells, mostly favour very extreme conditions: salty lakes, boiling hot springs
Theory (2 points)
A substantiated and widely-accepted MECHANISTIC EXPLANATION of natural phenomena.
Subject to testing, revision, and refutation.
Natural law
Describes events in nature that occur the same way every time under certain conditions.
Hypothesis
Proposed explanation for a set of observations
Must be experimentally testable, ie. falsifiable!!
Alternative name for independent variable
Experimental.
Alternative name for dependent variable
Responding
What’s an isotope?
Form of an element with same number of protons but different number of neutrons.
Let’s say u have the isotope 14C. How may protons, neutrons, and electrons does it have?
Protons: 6
Neutrons: 14-6 = 8
electrons: same as protons; 6
What property does a reactive atom have? (Tbt high school chemistry)
An incomplete valence shell.
On the periodic table of elements, which is the most reactive group of elements?
1
Name some elements from group 1 and group 8.
1: hydrogen, lithium, sodium
8: helium, neon, argon
Valence
The bonding capacity of an atom…the # of electrons required to fill its valence shell. Hydrogen has a valence of 1.
Covalent bond
2 atoms sharing 1+ pairs of outershell electrons.
Ionic bonds:`
2 atoms transferring electrons, resulting in formation fo ions with opposite charges that are attracted to each other.
Which bonds are intramolecular
Ionic And covalent
Which bonds are intermolecular
Hydrogen
What kinda protein structure do hydrogen bonds have
2* (auxiliary)
B-pleated sheets
Alpha helices
Dehydration reaction is _____ used in ______ of polymers
Loss of h20 molecule
Formation of reactions
hydrolysis is the _______ during the ____ of a polymer.
Gaining of an H2O molecule during breakdown fo a polymer.
