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113 Cards in this Set

  • Front
  • Back
List the steps of the Scientific Method:
1.Observe and form question
2.Research
3.hypothesis
4.experimentation/collect and analyze data
5.conclusion
6.repeat work
7.Theories and laws formed after enough trials have been done and repeated results are seen.
Double Blind Verification
Conclusions and results are sent out anonymously to scientists who were not involved in the original work, because everything is anonymous, all evaluators and scientists are unknown which assures no bias occurs.
What is the Scientific Method?
The scientific method is a required procedure that solves problems and proves validity and consistency in science.
Control Group
The standard used for comparison against other experimental groups.
Variable/Experimental Group
A group that is compared to the control group and is tested on/exposed to the variable.
What is the difference between a hypothesis and a theory?
A hypothesis is a testable explanation that has no proof of validity, a theory has been tested on multiple times, and is accurate.
Independent Variable
An independent variable is the variable that is varied or manipulated. The independent variable goes on the x-axis.
Dependent Variable
The dependent variable is the variable being effected by the independent variable. The dependent variable goes on the y-axis
Biology
The scientific study of life
What is the Cell Theory?
1. All living things are cellular.
2. Cells are the smallest functioning unit in all living things.
3. Cells come from prexisting cells.
Hans Janssen
invented the first compound microscope
Robert Hooke
first to use the word "cell", saw the cell wall of a cork plant.
Anton Van Leeuwenhoek
first to observe living cells (teeth scrapings). Called them "animalcules".
Matthias Schleiden
first to observe that all plants are made up of cells.
Theodore Schwann
first to put into concept that all living things are cellular.
*contributes to the first part of the cell theory
Rudolph Virchow
discovered that cells come from pre-existing cells. He disproved the theory of spontaneous generation.
*contributes to the third part of the cell theory
Mitochondria
makes energy for all eukaryotic cells. Has a cristae and 2 membranes(inner & outer)
Nucleus
the controlling organelle of the cell that contains the DNA
Nucleolus
contains the RNA and is inside of the nucleus
Cell Membrane
controls the movement of materials in and out of the cell
Cell Wall
protects and physically supports a cell; it goes around the plasma membrane and is only seen in plants
Plastid
organelles that function in photosynthesis or storage in plants
Chloroplasts
an energy organelle that photosynthesis occurs in. Contains thylakoid disks and stroma
Amyloplasts
organelles that are pigment free and store starch grains
Golgi Body
packages items inside the vesicle for shipment
Nuclear Envelope
surrounds the nucleoplasm. Like a cell membrane, it control what enters and leaves the nucleus
Microtubles
largest component of the cytoskeleton, is used to help keep organelles and cell structures in place or move them to new locations.
Intermediate Filaments
the second largest component of the cytoskeleton
Microfilaments
The smallest component of the cytoskeleton used for cell shrinkage, movement, and structural support
Endoplasmic Reticulum
the organelle existing in the cytoplasm that helps with transportation
Smooth ER
Part of the endomembrane system that lacks ribosome attatchement.
Rough ER
the production site of ribosomes
Lysosome
performs intracellular digestion
Centriole
is used in animal cell reproduction
Prokaryotic Cells VS Eukaryotic Cells
Prokaryotes: If a cell wall is present, contains pepidoglycon and is complex. It is smaller in size, has no membrane bound organelles except ribosomes, and has circular DNA.

Eukaryotes: If a cell wall is present, in contains cellulox and is simple. It is larger in size, contains all organelles, and has helical, linear, double-stranded DNA.
Organizations of Life
1. Atom
2. Molecule
3. Cell
4. Tissue
5. Organ
6. Organ-system
7. Multi-celled organism
8. Population
9. Community
10. Ecosystem
11. Biosphere
Fluid Mosaic Model
describes the structure of the cell. The fluid is smooth by lipid tails repelling water and the mosaic is bumpy with phosphate heads.
Adhesion Protein
helps form tissues
Communication Protein
sends out chemical messages to other proteins
Receptor Proteins
allows a cell to respond to other cells chemically communicated message
Recognition Protein
allows you immune cells to identify other cells as "friends"
Transport Protein
transports large materials in and out
Glycoprotein
tells cells when to stop dividing and where their neighbor cells are
What is the volume formula?
length x width x height
What is the surface area formula?
length x width x number of sides
Surface-to-volume ratio
restrains increase in cell size. An objects volume increase with the cube of its diameter and the surface area increase with the square
Carbohydrates
>0H
>used for energy and structure
>made up of saccarides
>EX: PASTA
Proteins
>NH2
>used to form tissue and cell membrane gates
>made up of amino acids that bond together using peptide bonds
>EX: MEAT & EGG
Nucleic Acids
>P
>makes up your RNA and DNA
>made up of monomers called nucleotides, which are phosphate, sugar, and a nitrogenous base
Lipids
>C=O-OH
>used for insulation, cell membrane structure, and energy
>made up of 3 fatty acids and 1 glycerol
>EX:OIL, BUTTER
Sterols
a special modified lipid in which the fatty acids are arranged in a ring format.
EX: STEROIDS
Phospholipids
if we remove one fatty acid and add a phosphate
Carbon Traits
Carbon is abundant, stable, versatile, and able to share a 4 outer valence electrons. Carbon is what makes a compound organic
Catabolic
breaking down
Anabolic
building up
When is an atom in nirvana?
When its valence is filled to the maximum occupancy
Atomic Number
number of protons
Mass Number
number of protons + neutrons
How do you find the number of neutrons in an atom?
mass number(rounded) - atomic mumber
Ionic Bond
transfer of electrons from one atom to the other
Covalent Bond
atoms share electrons in their valence to fill it
Polar Covalent Bond
atoms share electron unequally and there is a slight charge.
HYDROPHILIC
Non-Polar Covalent Bond
atoms share electron equally and there is no charge.
HYDROPHOBIC
Cation
an ion that gives away electrons and becomes positivly charged
Anion
an ion that gains electron and becomes negativly charged
1st Law of Thermodynamics
Energy/mass cannot be created or destroyed, only converted
2nd Law of Thermodynamics
Energy/mass cannot be converted at 100% efficiency
pH
the percent of hydrogen in H's or -OH's
Acid
the pH must be below 7 and it contains H's
Base
the pH must be above 7 and it contains -OH's
Properties of Water
polar covalent bond, temp. stabalizing, universal solvent, cohesive, ahdesive, neutral pH, less dense as a solid
Passive Transport
no energy required, moves with the concentration gradient
Active transport
energy required, moves against the concentration gradient
Osmosis
the movement of water from a high to low concentration
Diffusion
the movement of substances from a high to low concentration
Endocytosis
moving things inside the cell
Exocytosis
moving things out of the cell
Aerobic
requires oxygen
Anaerobic
absence of oxygen
Energy
the ability to do work
Cellular Respiration
Cellular Respiration:
Formula: C6H1206 + 602 -> 6CO2 + 6H2O + ATP +Heat
Cellular Respiration is the process in which heterotrophs break down carbohydrates (glucose) to make ATP. It takes place in the mitochondria.
Glycolysis
Glycolysis: (takes place in the cytoplasm of the cell)
*gross ATP= 4, net gain=2*
•The 6 carbon glucose is broken down into two 3 carbon Pyruvates.
•ATP is used to break down glucose into Pyruvates.
•This is an anaerobic process.
Citric Acid Cycle
Citric Acid Cycle: (takes place inside the mitochondria, but outside the cristae)
•Each pyruvate is broken down further.
•The CO2 from the broken Pyruvates are released as a waste product.
•NAD captures the hydrogen ions to be used for later.
•This is an aerobic process
Electron Transport Chain
Electron Transport Chain: (takes place in the mitochondria, past the cristae)
•Hydrogen ions are moved using NAD to the cristae.
•Hydrogen leaves the carrier NAD to go across the cristae and to oxygen. The hydrogen and oxygen bond together to make water.
•While moving across the cristae and to the oxygen, hydrogen creates a lot of energy that in turn is used to power the anabolic build of ATP.
•Once ETC is completed, chemi-osmosis is performed to move the water and ATP out of the mitochondria for use.
Photosynthesis
Photosynthesis:
Formula: 6CO2 + 6H20 + ATP > C6H1206 + 602
The process in which autotrophs use ATP and sunlight to combine water (H20) and carbon dioxide (CO2) together to make glucose (C6H1206). It takes place in the chloroplast.
Light Reactions
Light Reactions (takes place in the thylakoid disks):
Formula:
•Light hits the electrons in the pigment Chlorophyll causing energy to be released.
•The energy released is used to split the water, this process is called photolysis.
•Once the water is split, NADP comes to pick up the hydrogen to take it to the stroma.
•ATP is charged while this is all taking place
Calvin Cycle
Calvin Cycle: (takes place in the stroma)
•ATP and NADPH are moved to the stroma.
•The stroma has pores called stomata that are watched by guard cells that allow carbon dioxide (CO2) to come in and oxygen to be released as a waste product.
•ATP is then used to bond the hydrogen taken from the NADPH to the carbon and oxygen we get from carbon dioxide (CO2).
•Finally, we get glucose (C6H1206).
G1
46 chromosomes; cell growth
S
92 chromosomes; DNA replication
G2
92 chromosomes; preparation for mitosis
M
46 chromosomes; mitosis/ division of the nucleus
Cytokinesis
46 chromosomes; division of everything else
Haploid
cell with half the number of chromosomes
Diploid
cell with regular number of chromosomes
Somatic
cell of the body
Gametic
sex cell
Sexual Reproduction
sperm + egg= zygote
Zygote
fertilized egg
What did Watson and Crick discover?
realized DNA was the molecule of inheritance and produced the 1st 3D model
What did Franklin do?
she provided the first x-ray of DNA
What did Meselson and Stahl do?
discovered DNA replication and semi-conservative replication
What did Chargraff do?
discovered the nucleotide bonding rules
Prophase
Nuclear envelope and nucleolus breaks downs and becomes invisible. Chromosomes are visible
Metaphase
Copied Chromosomes line up in the middle of the cell
Anaphase
Chromosomes and the copy are pulled to opposite ends of the cell
Telophase
2 new nuclear envelopes reappear
Cytokinesis
follows mitosis to copy all other parts of the cell
List the steps of Meiosis
Interphase:92
P1:92
M1:92
A1:92
T1:46
Cytokinesis:46
Interkinesis:46
P2:46
M2:46
A2:46
T2:23
Meiosis
process of making gametes(sperm and egg)
Mitosis
nuclear division of somatic cells
Ethanol Alcohol Fermetation
Occurs after Glycolysis. Happens to yeast. When fngi break down matter and release alcohol and carbon dioxide
Lactic Acid Fermetation
Occurs after Glycolysis and happens to muscles when animals run out of oxygen. A build up of lactic acid causes soreness
How to replicate DNA
1. unwind double helix using helicase to break the hydrogen bonds
2. stabalize open strands with histones
3. copy DNA using DNA polymerase
4. check for errors using DNA ligase