Biology Unit 2 Flashcards
The amount of energy required to produce a chemical product
Activation energy
Molecules that speed up chemical reactions
Catalyst
The basic unit of life
Cell
A type of protein that lowers the activation energy of a reaction to speed it up or catalyze it
Enzymes
Cells that are more complex contain membrane-bound components or organelles
Eukaryotic
Human immunodeficiency virus. A type of virus that invades cells of the immune system reproduces through the lysogenic cycle and causes acquired immunodeficiency syndrome or Aids
HIV
The limitation of viruses to a small range of hosts as a result of complementary virus and cell shapes
Host specificity
A virus that reproduces through the lytic cycle
Influenza
A type of viral reproduction in which a virus invades a host cell and lies dormant for a long. Of time before licing the cell or it bursting open
Lysogenic
A type of viral reproduction that involves the lysis or bursting open of the host cell
Lytic
Describes organisms that are made of many cells that work together to perform life processes
Multicellular
Collections of tissue that work together to perform a similar function
Organ
Collections of organs that work together to perform a similar function
Organ system
Subcellular units that are enclosed by a membrane and perform specific functions. Examples include the nucleus and mitochondria
Organelles
Cells that do not contain membrane-bound components or organelles
Prokaryotic cells
When cells develop to have a specific shape to perform a specific function examples include red blood cells in animals and xylem in plants
Specialize
A specific molecule that fits into the active site of an enzyme. The molecule or molecules that an enzyme acts on
Substrate
Collections of specialized cells that work together to perform a similar function
Tissue
Describes organisms that exist as one cell carrying out all life processes. Examples include bacteria
Unicellular
Microscopic non-living particles made of proteins and nucleic acids that require a host to reproduce
Viruses
