Bio Exam Flashcards
Cohesion
Water sticks to WATER.
Adhesion
Water sticks to OTHER substances
Hydrogen bonds
Oxygen and hydrogen stick TOGETHER.
Polarity
Different charge on opposite side.
Universal solvent
WATER.
Biology is the sturdy of
______.
Life.
Goals of science?
- PRESENT: Investigate the world around us.
- PAST: Explain events of nature.
- FUTURE: make predictions.
Scientific method steps:
Used to test a question
- Observe
- State the problem
- Hypothesis
- Expirement
- Data and and collect analysis.
- Conclusion
Cyclical
One answer leads to more questions.
Observations:
(Two types(
Quantitative and Qualitative.
Hypothesis (set up):
If…. Then…. Because…
Suspension
To much SOLUTE not EVENLY distributed.
Solution
Evenly mixed components.
Solute
Becomes dissolved by solvent.
Solvent
Dissolve.
Dissolve solutes
Ph scale:
Measure of PH.
Acid #’s :
0-7
Base #’s:
7-14
What is a buffer:
When weak acids and weak
bases are used to keep the PH level stable.
IV:
Changed by me.
DV:
Change I SEE.
Control:
No IV tested.
Variables held constant:
Variables kept the same.
Theory vs. Law
- can change with data (theory)
- true all the time (law)
Characteristics of life:
G-GRACE
- Grow
- Genetic info
- Reproduce
- Adapt to environment
- Made of -Cells-
- Has ENERGY
Organic compounds:
All molecules based off carbon
Homeostasis:
Keeping everything balanced.
Spontaneous Generation:
FALSE THEORY. All life comes from life.
Monomer vs. Polymer
One unit vs. Many Units.
Mono). (Poly
Enzymes
Control and regulate chemical reaction.
Catalyst
Substance that speeds up chem. reaction.
Activation energy:
Amount of energy required to start chem. reaction.
Substrate –> Enzyme —> Product
Biological molecule –> catalyze –> sub rate is now product. (Breaking down or building back up.
-OSE VS. -ASE
Carbohydrates vs. Enzymes
Carbohydrate (3):
Mono, Di, Poly
1:2:1
1 carbon 2 hydrogen 1 oxygen
Lipid (2):
Saturated, unsaturated.
3 fatty acids & 1 glycerol (triglycerides)
Nucleic acids:
Nucleotides.
-DNA & RNA
Protein.
Amino acids.
Stored ENERGY.
“GLOBULAR” shaped.
Organization of Biology:
12 levels of BIO.
Atom: .
Smallest unit that takes up space.
Molecule
Groups of atoms.
Organelle:
Membrane bound.
Cell:
Smallest function of life.
PROKARYOTIC
Bacteria.
Tissues:
g. of similar cells for a common function.
Organs
A g. of similar tissues working for a common function.
Organism:
An individual living thing.
Population:
Group of organisms Of one type of species living in the same area.
Community:
Populations that live in a defined areas.
Ecosystem:
Community and it’s non-living surroundings.
Biosphere:
Part of the earth that contains ecosystems.
Major organic compounds:
- Proteins
- Carbohydrates
- Lipids
- Nucleic acids
Mixture:
Two elements or compounds that are physically mixed but not chemically combined.
Dipole:
Uneven distribution of molecules.
Ways to denature:
PH, temperature, salinity.
Carbohydrate is a __.
Glucose.
We can’t live without.
CARBON.
Making a graph:
- Title
- X-unit
- Y-unit
- X-label
- Y-label
- Data