Scientific Study of Life
The study of life
Biology
Who synthesized the theory of evolution by natural selection?
Charles Darwin
Measure of an atom's attraction for shared electrons
Electronegativity
How many amino acids are there?
20
What are the two classes of nucleic acids?
DNA and RNA
Structural and functional units of life
Cells
Human interference of selective breeding in plants or animals
Artificial selection
How many covalent bonds can nitrogen form?
3
What bond is formed between two amino acids?
Peptide bond
What are the monomers that make up nucleic acids?
Nucleotides
Eukaryotes belonging to Domain Eukarya
Protists, kingdom fungi, kingdom plantae, kingdom animalia
Process of change by which an organism or species becomes better suited to its environment
Adaptation
Bond in which electrons are shared equally
Nonpolar covalent
Amino acids consist of what two chemical groups?
Amino group and carboxyl group
Two DNA chains are held together by ____
Hydrogen bonds
Which is higher in life's hierarchy of organization, a herd of cattle or a coral reef?
Coral reef
T/F: Environmental factors can influence natural selection
True
Bond between sodium (11) and fluorine (9)
Ionic bond
What is a chain of amino acids called?
A polypeptide
The base sequence that complements -TCACGA-
-AGTGCT-
The seven properties of life
Order, reproduction, growth and development, response to environment, energy processing, regulation, and evolutionary adaptation
Random appearance of a new trait in an organism
Mutation
What is the electronegativity difference in a polar bond?
Between 0.4 and 1.8
What process breaks proteins down into individual amino acids?
Hydrolysis
Components of the DNA backbone
Sugar (deoxyribose) and phosphate group