Exam 1 Study Guide Flashcards
Number of new species identified per day
50
9 Properties of life
“orangutans say read and get real heavenly euphoric eclairs”
Order, sensitivity, reproduction, adaptation, growth, regulation, hemostasis, energy processing, evolution
Hemostasis
Set of processes by which an organism keeps it’s internal conditions within tolerable ranges to sustain life
Example of hemostasis
Blood clotting
Negative feedback
Stimulus and response go in opposite directions
Example of negative feedback
Body temperature or cruise control on a vehicle
Positive feedback
Stimulus and response go in same direction until a specific outcome is achieved
Example of positive feedback
Pregnancy, milk letting, blood clotting
12 levels of organizations of life
Atom, molecule, macromolecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
New properties present at one level that aren’t seen in previous levels
Emergent properties
My toaster doesn’t toast my bread
Observation
Example of observation
My toaster doesn’t toast my bread
Why doesn’t my toaster work?
Question
There is something wrong with the electrical outlet
Hypothesis
If something is wrong with the outlet, my coffee maker also won’t work when plugged into it
Prediction
I plugged my coffee maker into the outlet
Experiment
My coffee maker works
Result or conclusion
Three types of variables
Independent, dependent, controlled
I control the variable/what I change in the experiment
Independent variable (stirring)
It will change but it’s not what I control. Dependent on independent variable.
Dependent variable (IE, sugar dissolves)
Control anything that will influence your results
Controlled variables (IE, Tea stirred, temperature and type)
Modification of a species over generations/traits from parent of offspring
Evolution
Two forms of reproduction and determining evolutionary similarity
Asexual and sexual
Offspring are clones/offspring arise from one parent
Asexual
Offspring arise from two parents and inherit jeans from both
Sexual
True or False: homogulous structures are the result of divergent evolution
True
Example of divergent evolution
Bone structure/forearms
True or false: analogous structures are convergent evolution (not closely related)
True
Example of analogous structures (similar looking structure but different environments)
Wings: birds, mammals, fish, insects
Has mass and occupy space: All matter is comprised of atoms
Matter
Smallest unit of an element
Atom
Pure substance that consists only of atoms with same number of protons
Element (. Periodic table)
Average number of mass of protons plus neutrons allowing for relative abundances of different isotypes
Atomic mass unit
Where is the atomic number found on the periodic table?
Upper left corner of symbol box
Where is the atomic symbol found?
In the middle of the atomic box
Where is the atomic mass found on the periodic table box
Middle/Underneath the atomic symbol
This has a positive charge and mass of 1 AMU
Proton
This has no charge and a mass of 1 amu
Neutron
This has a negative charge and 1/2000 the mass of a proton 0 amu
Electron