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Science

What Is Life/Land

QuestionAnswer
Definition of a Cell? The basic unit of life, all living things today are made of cells or are the product of cells (products include hair, nails, tendons (animal cell products) and xylem, sugars, etc (plant products)
Definition of Cell Membrane? The outer barrier of a cell. Seperates a cell from it's enviroment and is typically composed of phospholipids. Allows for the selective passage of some molecules.
Definition of Vesicle? A membranous and usually fluid filled sac.
Definition of Organic Molecule? Molecule containing carbon, usually associated with living things. Examples of organic molecules found in tested meteorite: hydrocarbons, amino acids, fatty acids, and proteins.
Are cells made of polymers? Yes (many molecules linked together)
Polymers are made out of monomers? Yes, molecules.
Monomer of proteins? Amino acids.
Monomers of carbohydrates? Sugars.
Monomers of lipids? fatty acids, glycerols, and phospates.
Three most common elements in the molecules that make up living things? (H) hydrogen, (O) oxygen, and (C) carbon.
TRUE OR FALSE: Phospholipids help break down cell membranes? FALSE: Phospholipids help make cell membranes (as in build)
Why are cell membranes important? They control what enters and leaves the cell and separate cells from their enviroment.
Three main parts to definition of life: Made of cells or contains membranes or encolsures; uses energy to grow (metabolism); has the ability to change over time.
Created by: smileybee
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