click below
click below
Normal Size Small Size show me how
BIOL 121P
Test 2 Review
| Question | Answer |
|---|---|
| Potential Energy | energy stored due to position (stored in chemical bonds) |
| Kinetic Energy | energy of motion |
| Adenosine Triphosphate | the main energy molecule (3 phosphates, ribose, adenine) |
| Hydrolysis | reaction where water breaks a chemical bond |
| Exergonic | spontaneous, releases energy |
| Endergonic | non-spontaneous, requires energy |
| Free Energy (G) | the amount of energy available to do work |
| Negative ΔG | is spontaneous |
| Positive ΔG | is non-spontaneous |
| Calatysts | substances that INCREASE the rate of a chemical reaction |
| Enzymes | biological catalysts made of proteins |
| Regulatory Molecules | controls when and where enzymes function |
| Competitive Inhibition | a molecule competes with the substrate for the active site of an enzyme (is reversible) |
| Allosteric Regulation | a molecule binds somewhere other than the active site (changes shape and activity of enzyme) |
| Metabolic Pathways | a series of chemical reactions in a cell |
| Feedback Inhibition | the final product of a pathway shuts down an earlier enzyme |
| Fitness | an individual's ability to produce offspring |
| Directional Selection | favors one extreme phenotype |
| Stabilizing Selection | favors intermediate phenotypes |
| Disruptive Selection | favors both extremes and removes middle |
| Allele Frequency | the proportion of a specific allele in a population |
| Homologous Traits | similar structures with the SAME evolutionary origin |
| Analogous Traits | similar structures with DIFFERENT evolutionary origins |
| Convergent Evolution | different species evolve similar traits independently |
| Divergent Evolution | species evolve in different directions from a common ancestor |
| Ontogeny | the development of an organism from embryo to adult |
| Blended Inheritance | traits mix together from parents |
| Hybridization Studies | experiments that breed organisms with different traits to study inheritance |
| Homozygous | two identical alleles (RR or rr) |
| Homozygous Dominant | BB |
| Homozygous REcessive | bb |
| Heterozygous | two different alleles (Rr) |
| Osigamy | gametes are same size |
| Anisogamy | gametes are different sizes |
| Sexual Dimorphism | physical differences between males and females |