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If solution A has a higher concentration of solute particles than solution B and if these solutions are separated by a semipermeable membrane, then there will be a net movement of waterinto solution B since B has a lower osmotic pressure than solution Ainto solution B since B will have a higher hydrostatic pressure than solution Ainto solution B since the osmolarity of B is less than that in solution Ainto solution A since B has a higher osmotic pressure than solution Ainto solution A since A has a lower concentration of water than solution BWhat might account for a net movement of water from solution X into solution Y? a. Solution X has a higher osmolarity than the cell. b. Solution X has more milliosmoles of solute per liter than the cell. c. Solution X has a higher hydrostatic pressure than solution Y d. All of the above e. Only a and bA substance does not move down a concentration gradient through a. a symporter b. an antiporter c. a primary active transporter d. a secondary active transporter e. facilitated diffusion carrierWhich of the following is not a function of the kidneys?Excreting metabolic wastesMaintaining proper plasma volumeSecreting aldosterone to regulate sodiumMaintaining proper osmolarity of body fluidsAssisting in maintaining the proper acid-base balance of the bodyThe peritubular capillariessupply nutrients and O2 to the tubular cellstake up the substances that are reabsorbed by the tubulessupply substances that are secreted by the tubulesperform all of the aboveperform none of the aboveWhich nephron structure is especially important in the kidney's ability to produce urine of varying concentration?Bowman' capsuleproximal tubule c. distal tubuleloop of HenleglomerulusThe renal process whereby substances are selectively transferred from the peritubular blood into the renal tubule isfiltrationsecretionreabsorptionexcretionnone of theseThe glomerular filtration rate isabout 115-125 ml/minabout 70-75 liters/day60 to 65 percent of the cardiac outputless than the rate of renal reabsorptionall of the aboveThe glomerular filtrateis a protein-free plasmais formed as a result of passive forces acting across the glomerular membranedoes not contain foreign compounds because these substances are secreted by specialtransport mechanisms in the proximal tubule insteadis both a and bis both a and cChanges in the glomerular filtration rates are accomplished throughautoregulationmyogenic activityvasoactive responses in the afferent arterioleall of the abovenone of the aboveThe macula densaconsists of specialized tubular cells in the juxtaglomerular apparatusconsists of specialized arteriolar smooth-muscle cells in the juxtaglomerular apparatussecretes reninhas characteristics a and bhas characteristics b and cWhich of the following forces oppose glomerular filtration?Blood colloid osmotic pressureBowman's capsule hydrostatic pressureGlomerular-capillary blood pressureBoth a and bBoth b and cAfferent arteriolar vasoconstriction ____ blood flow into the glomerulus, which causes the glomerular-capillary blood pressure to ____, leading to a(n) ____ in the net filtration pressure and a resultant ____ in the GFR.increases; increase; increase; increasedecreases; decrease; decrease; decreaseincreases; increase; decrease; decreasedecreases; decrease; increase; increasenone of theseTubular reabsorptionrefers to the movement of a substance from the peritubular capillary blood into the tubularfluidoccurs by either active or passive transportinvolves the process of transepithelial transporthas b and c characteristicshas none of the above characteristicsThe proximal tubulereabsorbs about 65 percent of the filtered wateris not the site of action of reninis where glucose is reabsorbedreceives filtrate from Bowman's capsulehas all of the above characteristics
When chromatin from any eukaryote is digested with micrococcal nuclease and fractionated using electrophoresis, DNA fragments of approximately two hundred base pairs in length are observed.
What's the possible use of enzyme's electrostatic potential.
Using a spectrophotometer set at 400 nm, an absorbance reading of 0.050 was obtained for a solution of p-nitrophenol at pH 6.5. The molar extinction coefficient of p-nitrophenol 21500 M-1cm-1 and the pka for p-nitrophenol is 7.
The 95 percent confidence interval for the relative risk of cardiovascular disease in the hormone group was 1.09 - 1.36
At a criminal trial, the prosecutor presents genotypes for three microsatellite loci as evidence. She reports that a DNA sample taken from the crime scene.
Why have both an endocrine and a nervous system? however we have not yet studied the endocrine system, you know enough about it to answer the question.
A botanist studying waterlilies in an isolated pond observed 3-leaf shapes in the population, round, arrowhead, and scalloped.
The membrane vesicles are next washed, the membranes solubilized and the proteins denatured and analyzed by SDS gel electrophoresis and Western blotting using polyclonal antibodies against glycophorin A, an erythrocyte plasma membrane protein.
About 5 percent of individuals with Down syndrome have a chromosomal translocation in which a third copy of chromosome 21 is attached to chromosome 14. If this translocation occurred in a parent's gonad, how can it lead to Down syndrome in a child.
The given statements describe SDS-PAGE, a method used to separate proteins. Some of the statements are correct, and some of them are incorrect.
Assume you are walking on the beach when you step on a shell and cut your foot. 4-cells of Vibrio vulnificus bacteria are transferred from shell and deposited deep inside the cut.
Think about a simple spherical model cell that consists of cytoplasm and a plasma membrane.
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