Biol 473 - Study guides, Class notes & Summaries

BIOL 473 Theory Test II

SRY transcription factor is only found in what kinds of animals? - Mammals (eutherians, marsupials, but not monotremes) Sry is expressed very transiently by - The pre-Sertoli cells (cells in the genital ridge that are derived from the coelomic epithelium cells) SRY promotes the pre-Sertoli cells to form - testes cords Which transcription factor binds too many of the same targets as Sry? - SOX9 Sry drives the expression of SOX9: true or false - True The SRY sequence is well co...

BIOL 473 Theory Test II.

Proximal convoluted tubule functions - reabsorption of water, ions, and organic nutrients Distal convoluted tubule functions - secretion of ions, acids, drugs, and toxins Henle's loop functions - reabsorption of water, sodium, and chloride Cardiac output in the kidney - 25% of cardiac output is filtered in the kidney Blood pressure - kidneys regulate blood pressure by maintaining salt and water balance Hyponatremia - overhydration, low salt concentration, increased blood pr...

What does the HPG axis regulate? Spermatogenesis, oogenesis, ovulation, preparation of the uterus for implantation Hypothalamus related to HPG axis Releases GnRH GnRH related to HPG axis Stimulates anterior pituitary gland to release FSH and LH Follicle Combination of different cells that surround and support the oocyte Produce and secrete estrogen FSH and LH Stimulate ovulation and production of estrogen by developing follicles FSH: stimulates development of supportive cells of follicle...

Functional Responserelationship between prey density and the feeding rate of a predator Sediment microzonezone of oxygenated sediments around the roots of macrophytes hyporheic zonesubsurface habitat of streams/rivers where ground water mixes with surface water Cyclomorphosisphenomenon seen in zooplankton where their morphology changes in response to predation pressure/presence. tephraobvious band found in sediments produced by volcanic ash Riparian habitathabitat forming the boundary...

What is the driving force that causes gasses (oxygen and carbon dioxide) to cross membranes associated with the pulmonary and system circuits. a) active transport b) diffusion c) hydrostatic pressureb) diffusion The oxygen concentration in the venous blood of the systemic circuit is close to 0. T/Ffalse Which of the following is most affected by aspirating a liquid? a) the perfusion (amount of blood flowing to) of the alveoli b) the amount of oxygen reaching the alveoli c) the amount ...

pH forumla - CORRECT ANSWER-pH=-log[H+] Buffering Capacity - CORRECT ANSWER-the ability of a substance to resist changes in pH when acids like CO2 are added Sources of CO2 - CORRECT ANSWER-Atmosphere, respiration, solution of mineral carbonates CO2 is lost from solution by - CORRECT ANSWER-Diffusion into the atmosphere, uptake during photosynthesis Photic Zone - CORRECT ANSWER-Where there is enough light to fuel photosynthesis Acid Neutralizing Capacity (ANC) - CORRECT ANSWER-aka ...