Properties of Life
The ability of living things maintain relatively stable internal environments to optimize conditions for metabolism and other processes is called _____________.
homeostasis
The genetic change in a species over time is called ____________________.
evolution
What is the first step of the scientific method?
Observation
What is the smallest unit of organization?
atom
An acid solution has a ph __________ than 7.
less
The sum of all chemical reactions in a cell is called _________________.
metabolism
The driving force is evolution is called __________________ selection.
natural
An educated guess to explain how something happens is called a(n) _______________.
hypothesis
What are the 3 subatomic particles in an atom and what are their charages?
protons, neutrons, electrons
A basic solution has a ph ___________ than 7.
greater than
All organisms pass genetic information to future generations from parents to offspring. This is called ___________________.
heredity
Who is credited with coming up with the theory of evolution?
Charles Darwin
What is performed to test the hypothesis?
Experiment
atomic number is equal to the number of _______________.
protons
The three levels of the complexity of life are at the ____________________ level, _________________ level and ________________ level.
1. Cellular
2. Organismal
3. Populational
What represents certainty and is a unifying explanation for a broad range of observations?
It can be used to describe natural phenomenons.
Theory
Name the two variables in an experiment.
Dependent and independent
Atomic weight is equal to what?
Number of protons and neutrons
A neutral solution has an equal amount of ______ and ______.
H+ and OH- molecules
Name the 5 levels of cellular organization from smallest to greatest.
atom, molecule, macromolecule, organelle and cell
Charles Darwin used ________________ selection to show how evolution takes place.
artificial
Who is credited with discovering cells?
Robert Hooke
What are the 3 subatomic particles in an atom and what are their charges?
protons +, neutrons (no charge), electrons-
The first electron orbital can only hold _____ electrons, the ones beyond the first are considered full when they have _______ electrons
2, 8