What is the type of membrane and fluid for Fish and Amphibia?

Select all of the features of amphibians that tie them to fresh water.Multiple select question.gas exchange across skineggs without shells or protective membranesamniotic eggscartilaginous skeletons and lobed finslarvae that use gills for respiration

Within the Actinopterygii (bony fish) lineage, marine teleosts (bony fish with mobile jaws) live in an aquatic environment where there is a higher external concentration of salt and a lower concentration of water relative to their internal concentrations.  Owing to these conditions, salt ions tend to diffuse into the teleost through its skin, whereas water molecules within the organism osmotically traverse the opposite path.Irrespective of lineage, many fish species actively assess their environment and regulate their internal concentration of fluids and electrolytes via a homeostatic process known as osmoregulation.  Teleosts with either glomerular kidneys (eg, eels, sculpin) or aglomerular kidneys that are purely tubular (eg, goosefish, toadfish) have served as experimental subjects for the study of marine teleost osmoregulation.  Analyzing the ionic (ie, Na+, Cl−, Mg2+, SO42−) concentration of intestinal fluids, urine, and plasma in each species led to the discovery that the renal tubule of the goosefish has both excretory and reabsorptive functions.Scientists have concluded that marine teleost osmoregulation involves the ingestion of seawater, retrieval of salts and water from the intestine, and primary excretion of divalent ions via urine and monovalent ions through the gills (thin barriers between the organism's blood and the aquatic environment).In an experiment to further study osmoregulatory mechanisms, researchers emptied the gut of an eel and sealed the anus to prevent anal fluid loss.  The eel was transported into seawater that had been treated with the volume marker phenol red, which can only be excreted anally.  After 20 hours, the eel's gut contained 2.3 mL of fluid but showed a phenol red concentration equivalent to 12.3 mL of ingested seawater.  Researchers found that the eel excreted 2.3 g of urine.  They ultimately reported that the eel had lost all the seawater it absorbed through the gut via various mechanisms. Question 55Which of the following conclusions about the eel can be made based on the experiment in the passage?  (Note:  Water density is 1.0 g/mL.)A.The eel absorbed 12.3 mL of water through the gut.B.The eel drank 10.0 mL of water.C.The eel lost 7.7 mL of water extrarenally.D.The eel excreted 4.6 mL of water renally.

Which component of the plasma membrane has an important impact on the fluidity of the membrane?

Which of the following is the major cation of the extracellular fluids of vertebrates?Multiple choice question.CalciumMagnesiumPotassiumSodium

Describe two ways in which the circulatory system of a fish is different from the circulatorysystem of a mammal