Answer: C. The species is classified in a clade that does not include all protists.
The Kingdom Protists involves organisms which are simple in structure and functions. Some of these organisms have characteristics common to both plants and animals. A clade represents a group of organisms that have all characteristics common to their ancestor. The example of algea given here, has characteristics which are found mainly in plants belongs to Kingdom Plantea. Therefore, the clade of these Protists can be related with those of plants but cannot be related to Protists which exhibit animal like characteristics.
Therefore, species is classified in a clade that does not include all Protists.
First we must understand the balanced chemical equation:
Pb(NO3)2 + K2CrO4 ==> PbCr04 + 2KNO3
This shows us that two moles of potassium nitrate are formed from 1 mole of lead nitrate or potassium chromate solution. The next step is to find out how many moles of each reactant there are. Note the word Molar is a concentration that simply means moles per liter.
2.25L of 1.5M lead nitrate = 2.25x1.5 = 3.375 moles of lead nitrate
1.15L of 2.75M potassium chromate = 1.15x2.75 = 3.1625 moles
The important part here is to see that the number of moles of the reactants are different. We know the number of moles of products will be dependent on the number of moles of reactants, and in this case there is less potassium chromate than there is lead nitrate, so this is the limiting factor as there is a one to one relationship with both reactants. Therefore, the number of moles of potassium nitrate produced is 2 x number of moles of potassium chromate. i.e. 6.325 moles of potassium nitrate is liberated.
To work out the number of grams, we must find the molar mass (the mass of one mole) of KNO3, which is the sum of the molar mass of each of its component atoms that make up the molecule. I've looked this up as 101.1 grams per mole.
Now we simply times the molar mass by the number of moles to yield the final grams liberated: 6.325 moles x 101.1 grams/mole = 639.4 grams of potassium nitrate is liberated from this reaction.
The presence of protein in the urine is called proteinuria. Proteinuria is an indicator that THE KIDNEYS' FILTRATION MEMBRANE HAS BEEN DAMAGED.
It is the work of the kidneys to filter the blood and remove all the waste products while conserving the materials needed in the body. When body materials such as protein begin to come out with urine in excess of the normal quantity expected, then that means that the kidney is not filtering the blood very well again and this is usually due to damage in the kidney glomeruli which perform the process of filtration.
Explanation:
cAMP binds to protein kinase A and activates it, allowing PKA to phosphorylate downstream factors to produce a cellular response. cAMP signaling is turned off by enzymes called phosphodiesterases, which break the ring of cAMP and turn it into adenosine monophosphate (AMP).
