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Ecosystem dynamics include two major processes:
-Cycling of nutrients
-Flow of energy from sunlight to produces to consumers
Tentative answer to a well-framed question
- Can be eliminated, but cannot be confirmed with absolute certainty
hydrogen atom that is covalently bonded to one electronegative atom is attracted to another electronegative atom
Four of water's properties that facilitate an environment for life are:
-Ability to moderate temperature
-Expansion upon freezing
-Versatility as a solvent
Components of organic molecules that are most commonly involved in chemical reactions
are hydrophobic; they consist mostly of hydrocarbons, which form non-polar covalent bond
-All living things are composed of one or more cells
-All cells come from pre- existing cells
-Cells are the basic organized unit of life
Characteristics shared by all cells
-Enclosed by plasma membrane
- Have cytoplasm
-Use DNA as genetic information
-Have ribosomes for making proteins
-Contains DNA & RNA
_Controls cell reproduction
-Pores regulate the entry and exit of molecules from the nucleus
-Made of protein and rRNA
- Translation: Proteins synthesis
Free floating or attached to E.R.
-Consists of flattened membrane scas
-Functions of _______________
-Modifies products of the ER
-Manufactures certain macromolecules
-Sorts and packages materials into transport vesicles
-Three main types of fibers make up the cytoskeleton
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