Definitions Flashcards
Active transport
A process requiring energy (ATP), whereby chemicals are taken into a cell against the concentration gradient.
Antibody
A specific protein produced by lymphocytes in response to the presence of an antigen.
Antigen
A foreign (non-self) chemical that stimulates the production of antibodies.
Biomolecules
Chemicals made by organisms.
Codon
A sequence of three DNA or RNA nucleotides that correspond to a specific amino acid during protein synthesis.
Glycolysis
The first stage of respiration that converts glucose into pyruvic acid, and occurs in the cytosol.
Gonad
An animal organ that produces sex cells.
Haploid (n) cell
Cell that has one copy of each chromosome.
Hypothesis
A possible explanation for an observation that can be tested.
Respiration
The controlled release of energy from food.
