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Elements are each distinguished by a single atom, so if you have a single atom it is a single element. When an atom loses an electron its an ionic bond, but when electrons are shared it is a covalent bond.
-Jen, period 4
Difference Between An ELEMENT and a COMPOUND
An element is a pure chemical substance consisting of one type of atom.
A compound is a chemical substance consisting of two or more chemical elements.
A COMPOUND is a COMBINATION of elements in one substance. Elements are what makes up compounds.
-Abby, pd. 6B
Carbohydrates are always made up of carbon, oxygen, and hydrogen. It fuels your metabolism, and there are many stuctures of carbs. The different structures are different sugars. That is what provides energy for everyone.
Jen, period 4
MONOMERS VS POLYMERS
monomers: smaller units (simple compound)
polymer: made up of many monomers
*Think about the words MONO(monomer) means one, single or alone. Poly (polymer) means more than one, multiple. Ex.= POLYtheistic means believing in multiple gods. MONOtone means one tone of voice.
- Monomers are the units that make up polymers. The monomers join together like a puzzle in order to form polymers.
-Abby, pd 6B
Cell Theory
-All living things are made of cells.
-Cells are the basic (living) units of structure and function of living things.
-All cells come from preexisting cells.
Abby, pd. 6B
PEOPLE and the CELL THEORY
1. Robert Hook- looked at a piece of cork and saw "cells".
* hooKKKK and corKKKK sound alike*
2. Van Leeuwenhoek- first to observe microorganisms
*van leeuwenhoek and microorganisms BOTH HAVE 14 LETTERS*
3.Matthias Schleiden-stated that all plants are made of cells.
*Matthias-Marigold, Morning glory (types of plants) and Schleiden- Sun flower, Salvia (also types of plants)
4. Theodor Schwann-stated that all animals are made up of cells.
*SCHWANN SOUNDS LIKE SWAN*
5. Rudolf Virchow- found that new cells could only be produced from the division of existing cells.
*Virchow and deVision- not many words have V in them*
Abby, pd 6b
Cell Parts
organelles that capture and release energy:
chloroplasts and mitochondria
chloroplasts: convert solar energy to chemical energy stored in food
Mitochondria: convery chemical energy in food to usuable compounds
Chloroplasts are found in plant cells like chlorophyll (a green pigment found in all plants)
Mitochondria are found in animal cells.
Mitochondria and chloroplasts can be though of as a powerhouse of the cell.
Abby pd. 6B
Hypertonic vs. Hypotonic
Hypertonic: Solution with more solute than another solution.
*When your HYPER you have more energy than another person*
Hypotonic: Solution with less solute than another solution.
*When you have LIPOsuction you have less fat. (LIPO rhymes with HYPO)
Abby, pd 6B
ATP and ADP
*ATP contains adenosine, ribose and 3 phosphate groups.
*ADP contains adenosine, ribose and 2 phosphate groups.
-Because of the phosphate groups, ATP can easily release and store energy.
-When there is extra energy in a cell, another phosphate is added to ADP which make APT. The energy is held in the phosphate groups.
-When a cell needs to release energy, it does so by the controlled breaking of the chemical bonds between the second and third phosphate group. In this case ATP becomes ADP again.
store energy: ADP-> ATP
release energy: ATP->ADP
Abby pd. 6B
*which makes ATP
If you are having trouble studying for your test, for me the best way to study is to go to the online book and read the overview and play the review game. You may discover you didn't know the topic as well as you thought.
Jen, period 4
ECOLOGICAL PYRAMIDS
-shows the relative amount of energy in each trophic level.
types:
energy, biomass and numbers
Energy:
-the relative amount of energy Available at each trophic level
*It's expressed in percentages ranging from 100%-.1%. The energy available DECREASES going up the pyramid. This is because each trophic level uses energy and gives off heat resulting in less and less energy for the next level.*
Abby, pd 6B
Biome and Biosphere:
There are 6 main biomes located in our biosphere.
Each biome is a group of communities that share the same climatic conditions.
exs. Tropical rainforest, Tundra, Boreal forest and desert
-Abby Pd. 6b
PMAT
(prophase,metaphase,anaphase and telophase)
Prophase-the chromatin condenses and the nuclear envelope breaks down
Metaphase- Chromosomes line up in the center of the cell.
Anaphase-Chromosomes start moving to opposite ends of cell.
Telophase- a complete set of identical chromosomes are formed and the nuclear membranes start to form.
Abby
7th period
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