Exam 1 CH1-7 Flashcards
Properties of living things
- Have order
- Reproduce
- Grow, develop
- Process energy and have metabolism
- Respond to their environment
- Regulate their physiology
- Evolve
Viruses are similar to life because:
Reproduce, evolve, made of protein and DNA (ordered)
Viruses are different to life because:
Don’t metabolize, grow, regulate physiology.
Facts
Things we know are true = Statement of a phenomenon
Predictions
A way to test a hypothesis = If/then statement
Hypothesis
Explanations for facts = Phenomenon/because statement (can be supported by facts but never proven)
Inductive logic
makes general statements from many specific observations.
Descriptive science
makes general conclusions about the natural world from many observations.
Deductive logic
makes specific predictions from a general statement
Experimental science
tests specific predictions that are derived from hypotheses.
Common ancestor of life tree
Bacteria, archaea, eukaryotes.
Bacteria goes left, archaea and eukaryotes go right but separate.
Name domains that are prokaryotes
Bacteria and Archaea
Name domains that are eukaryotes
Animilia, Plantae, fungi, protist
Prokaryotes
Single celled species without nucleus and other membrane bound organelles.
Most common elements
C H O N - 96.3%, Ca P K S Na Cl Mg - 3.7%
Trace Elements
Used in small quantities ex B Cu
How was plum pudding model refuted
Plum pudding model was electrons and protons combined in an atom
Gold foil experiment disproved it
Valence Shells
3 valence shells
shell 1 - lowest energy, shell 3 - highest energy
Compound
2 or more different elements bound together in a fixed ratio.
Atom
Number of protons determines an atom’s identity.
Smallest unit of matter that retains the properties of an element.
An atoms electron distribution determines its ability to form bonds.
Broken down into protons neutrons and electrons.
Matter
Anything that takes up space
Element
A substance that cannot be broken down into anything smaller via chemical reactions.
Electrons Protons Neutrons
(-) (+) (neutral), protons and neutrons have mass of 1 dalton roughly, electrons have a mass of 1/2000 dalton.
23
NA mass #? atomic #? # of neutrons?
11
Mass # = protons + neutrons = 23
Atomic # = # of protons
Mass # - Atomic # = # of neutrons