AP Biology Questions and Answers (Graded A)

AP Biology Questions and Answers (Graded A) Resting membrane potential depends on which of the following(s)? I. Active transport II. Selective permeability III. Differential distribution of ions across the anxonal membrane All three. The resting potential depends on active transport (the Na+K+ATPase pump) and the selective permeability of the axon membrane to K+ than to Na+, which leads to a differential distribution of ions across the axonal membrane Mitosis The division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell Stages of mitosis Interphase (G1),S=DNA replication, Late interphase (G3), Prophase, Metaphase, Anaphase,Telophase, Cytokensis Interphase (Mitosis) G1 (1st growth) 1 centriol Choromotids Cells spend most of life in this phase Late Interphase (mitosis) G2 (2nd growth) 2 centriols Sister chromatids Cells spend most of life in this phase Prophase (mitosis) Spindle fibers form Nuclear envelope breaks down Metaphase (mitosis) Chromosomes line up in center along the metaphase plate Spindle fibers are attached Anaphase (mitosis) Spindle fibers begin to shorten, pulling chromotids appart. Telophase (mitosis) Cleavage furrow forms Chromotids pull to opppsote ends Nuclear envelope begins to form Cytokenesis Cytoplasm divides and cells membrane pinched into 2 separate cells Exact copies of cell we began with Meiosis The process by which a single parent diploid cell (Botb homologous chromosomes) divides to produce four daughter haploid cells (One homologous chromosome of the pair). Meiosis is the type of cell division by which germ cells (eggs and sleek) are produced. The Krebs cycle in humans releases