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Biology 101: Term 1 - Living Organisms, Cells, Evolution, and Ecology, Quizzes of Biology

Definitions for key terms from the first term of a university-level biology course, covering topics such as the characteristics of living organisms, cell theory, evolution by natural selection, dna, genes, mutations, organelles, and ecology.

Typology: Quizzes

2009/2010

Uploaded on 02/25/2010

ewebste3
ewebste3 🇺🇸

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TERM 1
Characteristics of living organisms
DEFINITION 1
Consists of one or mote cells, contain genetic info, use
genetic info to reproduce themselves, are genetically related
and have evolved, can convert molecues from their
environment into new biological molecules, can extract
energy from the environment and use it to do biological
work, can regulate their internal environment
TERM 2
Cell Theory
DEFINITION 2
Cells are the basic structural and physiological units of all
living things. All cells come from preexisting cells, all cells
are similar in chemical composition, most of the chemical
reactions of life occur within cells, complete sets of genetic
info are replicated and passed on during cell division.
TERM 3
Evolution by natural selection
DEFINITION 3
-Darwin. Humans select for desired traits when breeding
animals, could occur through differential survival, leads to
adaption
TERM 4
DNA
DEFINITION 4
The info that is passed from parent to daughter cells,
repeating subunits call nucleotides
TERM 5
Gene
DEFINITION 5
A specific segment of DNA molecule, contains info for making
proteins
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Characteristics of living organisms

Consists of one or mote cells, contain genetic info, use genetic info to reproduce themselves, are genetically related and have evolved, can convert molecues from their environment into new biological molecules, can extract energy from the environment and use it to do biological work, can regulate their internal environment TERM 2

Cell Theory

DEFINITION 2 Cells are the basic structural and physiological units of all living things. All cells come from preexisting cells, all cells are similar in chemical composition, most of the chemical reactions of life occur within cells, complete sets of genetic info are replicated and passed on during cell division. TERM 3

Evolution by natural selection

DEFINITION 3 -Darwin. Humans select for desired traits when breeding animals, could occur through differential survival, leads to adaption TERM 4

DNA

DEFINITION 4 The info that is passed from parent to daughter cells, repeating subunits call nucleotides TERM 5

Gene

DEFINITION 5 A specific segment of DNA molecule, contains info for making proteins

Mutations

Alterations in the nucleotide sequence TERM 7

Genome

DEFINITION 7 Sum of all the DNA in the cell. All cells in a multicellular organism have the same genome. TERM 8

Organs

DEFINITION 8 made up of tissues--specific functions TERM 9

Tissues

DEFINITION 9 Assembladge of similar cells TERM 10

Organ system

DEFINITION 10 formed by interrelated organs

Organelles

Membrane bound compartments with specialized functions: Nucleus, mitochondrion, chloroplast TERM 17

Species scientific name

DEFINITION 17 Genus name, then species name TERM 18

Domains of life

DEFINITION 18 Bacteria, archaea, eukarya