Independent Variable
The variable that you change in an experiment ex. how much water the plant gets
Dependent Variable
The factor that you measure; that changes based on the independent variable ex. how tall the plant grows
Experimental Group
The group in which the independent variable is altered ex group that gets more water
Control Group
The group in which nothing is changed ex. the group that gets a normal amount of water
Constants
All the variables that you don't change exs. soil, type of plant, how much sun, etc
Parts of a graph
X axis (independent variable)Y axis (dependent variable) Title (says what the graph is about)Titles for the axis (with measurements where appropriate) KeyLegend (states obvious, does not interpret data)
Trendline (Line-of-best-fit)
Draw a circle around all the lines then draw a line with a ruler that divides the circle in half (ignore outliers). This is the average of the data.
Solute
Is the thing that the solvent is attracted to (like salt).
Solvent
Would be the water. Breaks apart the solute.
Covalent Bonds
Shares valance electors (outer shell). Sharing is caring.
Ionic Bonds
Stealing valence electrons but it benefits both. Results in one atom being positively charged and one atom being negatively charged. Two then attracted to each other like magnets.
Polar
Means there's uneven sharing of electrons. Example, water as the oxygen hogs the electrons. One end is electropositive and one end is electronegative. (note polar things dissolve other polar things)
Nonpolar
Means they're shared evenly. (note that nonpolar dissolve other nonpolar things)
Dehydration Synthesis
H2O is removed from the middle of the molecule, splitting it into two separate parts. Joins the two together at the middle makes a MEGA MOLECULE
Hydrolysis
To "lys" is to slice! Water is added from the outside and splits apart the molecule
Passive transport
Doesn't require energy (ATP). Follows the concentration gradient (high to low)
Simple Diffusion
Type of passive transport. Can be done by small, nonpolar molecules (water is the exception). Slips through the phospholipid bilayer to the other side
Facilitated Diffusion
Type of passive transport. Works on larger, charged, or polar molecules. Uses proteins (like channel proteins) to pass through the bilayer
Osmosis
Type of passive transport. Diffusion for water.
Hypertonic
A solution compared to another has more solute than solvent than the other one (more salt than water AKA it is more concentrated)
Hypotonic
A solution compared to another has more solvent than solute than the other one (more water than salt AKA it is less concentrated)
Isotonic
Equal amounts of something (water, salt, sugar, etc.). Equilibrium has been reached
Active Transport
Requires energy (ATP). Moves against the concentration gradient (low to high) if the cell needs it. For very big molecules that cannot do any passive transport
Protein pump (Has to do with active transport)
Protein is activated by ATP. ATP transforms to ADP. Opens up pathway, sucks molecules through
Endocytosis (Has to do with active transport)
They come in a large group, are enclosed by the membrane.Membrane breaks off when a circle is moved inside, forming a vacuole. Things are transported into the cell. For very big molecules
Exocytosis (has to do with active transport)
Things (like waste or value resources) are transported out of the cell. Vacuole reaches membrane, merges with it.Forces things out (or they stay in a vacuole still but not one connected to the membrane)
Eukaryotic (type of cell)
Has a nucleus and membrane-bound organelles
Eukaryotic Animal (type of cell)
Has only cell membrane. All membrane-bound organelles except cell wall and chloroplast. Smaller vacuoles
Eukaryotic Plant (type of cell)
Has cell membrane and cell wall. Chloroplasts with chlorophyll (photosynthesis). Large central vacuole
Prokaryotic (type of cell)
No nucleus. Are often bacteria. Has ribosomes, free floating DNA, cell membrane and wall, and cytoplasm
Nucleus
stores DNA
Nucleolus
Ribosome synthesis (makes mRNA into proteins)
Nuclear envelope (nuclear pores)
surrounds nucleus, controls what gets in or out of it
Rough ER
Has ribosomes, transports proteins.
Ribosomes
polypeptide chain synthesis. can be free floating.
Smooth ER
no ribosomes, lipid synthesis (creates lipids)
Golgi apparatus
Folds polypeptide chain into a protein, processes
Vacuole
storage
Mitochondria
Powerhouse of the cell. Makes ATP
Cell membrane
controls what gets in or out of the cell (is semi-permeable)
Cell wall
stops plant cells from bursting
pH, acids and bases
Acidic has a pH of 0-6 (0 is the most acidic)7 has a neutral pH (water)Bases have a pH of 8-14 (14 is the most basic)
Buffers
Help maintain a constant pH level and homeostasis. (Buffers resist changes in pH). If the solution is too acidic, it has too many H+, and the buffer will take some in. If the solution is too basic, it doesn't have enough H+ and the buffer will release some
Feedback Loops
Helps Maintain homeostasis. Sensor detects a change in the body. The effector than responds to the change accordingly(Think a heater that warms the house when too cold and cools it when too warm)
asexual reproduction
Asexual is a genetic clone. Only requires one parent ("Copy machine")
sexual reproduction
Sexual requires two parents (Genetic diversity)
Mitosis
4 stages-Prophase Copies of chromosomes are formed-Metaphase Nuclear membrane disintegrates. Spindles attach to chromosomes-Anaphase Spindles pull chromosomes apart so there are 8, 2 pairs of 4-Telophase Nuclear membranes reform around the pairs, two nuclei in one cell Technically not a part of mitosis but:-Cytokinesis The cell actually splits into two smaller versions of itself
Interphase
G1 Growth phaseS DNA ReplicationG2 Second growth phase, mutation/issue check
Lipids
Found in cell membrane. Makes up the cell membrane, provides pigment, long term energy, keeps us warm
Proteins
Found in ribosomes. Builds Muscles and Cells, Acts as enzymes, Biological Catalyst, cellular work, helps run the body
Carbs
Found surrounding the membrane. Provides structure and short term energy for the body
Nucleic Acids
Found in RNA and DNA. Provides genetic codes, has instructions to make proteins, Makes up DNA+RNA
Endomembrane System
Starts in the Nucleus, ribosomes created in the nucleolus
DNA gets copied into RNA, the RNA leaves through the nuclear pores in the nuclear envelope
Travels through the rough ER, attaches to a ribosome
Ribosome reads the instructions, creates a polypeptide chain
Polypeptide chain travels to the Golgi Apparatus and is folded into a protein
Leaves (or stays) in the cell via a vesicle via exocytosis
Cancer
apoptosis
Cell has mutations but keeps dividing, not self destructed (apoptosis). Becomes cancer. It divides at abnormally high rates, causing it to grow fast. When it reaches the bloodstream, it can travel anywhere in the body.
apoptosis
when the cell self destructs due to a mutation that was detected
Lysosomes
Breaks apart things (to “lys” is to slice!!!)