Praxis II Biology Content (5235) Study Questions and Answers

Darwinian fitness is largely defined by: The ability to survive, reproduce, and pass on one's genes Look for evidence of contribution to more than one _____________ to determine better Darwinian fitness Generation A scientific theory is an explanation that is generally: Broad in scope, supported by a large body of evidence, and that can serve as the basis for a new hypothesis and experimentation Each gamete will contain one member of: Each pair of homologous chromosomes This amino acid forms covalent disulfide bonds with other amino acid of its kind: Cysteine This functional group on an amino acid allows the formation of covalent disulfide bonds: Sulfhydryl (-SH ) group Covalent disulfide bonds are important in determining: The 3D shape of the protein If the sodium channels in the neuronal membrane of a nerve cell are blocked and a stimulus is applied to the nerve cell then: Action potential will not occur because depolarization will not occur On a global scale, there is a net movement of water: From the oceans -- to the land Evaporation exceeds ___________ over the oceans. Precipitation ___________ exceeds evaporation over the land. Precipitation The water cycle differs from other biochemical cycles because water moves through ecosystems by: physical rather than chemical processes Water percolates through soil and collects as_____________ or becomes ___________ Groundwater; surface run-off Similarity in characteristics between species, because the species share a common ancestor, is known as ___________ Homology