2. How do warranties and guarantees act as signals? What economic information problem might they address? (p. 457 #2)
In: Economics
In which ways is gluconeogenesis the reverse of glycolysis. Which of the following IS NOT TRUE?
A) gluconeogenesis uses most glycolysis reactions in reverse mode. The direction of the reaction is determined by the concentration of reagents and products in the pathway.
B) phosphoenolpyruvate and pyruvate interconversions directed by pyruvate carboxylase/PEP-carboxykinase AND pyruvate kinase are the first steps that commit the onset of gluconeogenesis
C) fructose-16P and fructose-6P interconversions directed by fructose 1-6 bisphosphatase AND phosphofructokinase is the first step that determine the onset of glycolysis
D) gluconeogenesis produces pyruvate and glycolysis makes glucose
In: Biology
Explain how the carbohydrates in the food are digested and in what form they are then absorbed into the bloodstream from the intestine?
Inside the cells, the carbohydrates are degraded in a reaction pathway called glycolysis. What is formed in glycolysis, ie what is the end product?
How many ATPs are formed, in glycolysis, when one glucose molecule is degraded? Are these ATPs formed by phosphorylation at the substrate level or by oxidative phosphorylation? Explain your answer.
If the cell has enough energy, glycolysis can be slowed down by
its
speed regulating step. Which step is this, and which metabolite is
formed from glucose up to this step?
What can the metabolite, which is formed in the glycolysis up to
that
speed regulating step, used in the cell that has enough energy from
before?
In: Biology
In: Biology
A single amino acid change in Ras eliminates its ability to hydrolyze GTP even in the presence of a GTPase-activating protein (GAP). Roughly 30% of human cancers have this change in Ras. You have just identified a small molecule that prevents the dimerization of a receptor tyrosine kinase that signals via Ras. Would you expect this molecule to be effective in the treatment of cancers that express this common, mutant form of Ras? Why or why not?
(Please give me a proper detailed explaination)
In: Biology
If a mother had blood type _____, her second baby and subsequent children would be endangered if they had type A+.
| a. |
type A– blood |
|
| b. |
type A+ blood |
|
| c. |
type B+ blood |
|
| d. |
type O+ blood |
Which of the following statements about human blood is false?
| a. |
blood plasma makes up more than half of the volume of normal blood |
|
| b. |
blood plasma is mostly water, with ions, amino acids, glucose, hormones, proteins, and other materials |
|
| c. |
white blood cells (leukocytes) make up about 40% of the volume of normal blood |
|
| d. |
red blood cells (erythrocytes) are the most common blood cells |
Which of the following is not a cause of chronic high blood pressure (hypertension)?
| a. |
increased diameter of peripheral arterioles |
|
| b. |
decreased elasticity of the walls of arteries and arterioles |
|
| c. |
buildup of cholesterol in the lining of arteries and arterioles (atherosclerosis) |
|
| d. |
increased resistance to blood flow in fatty tissues due to increased number and size of fat cells (obesity) |
Which of the following statements about cholesterol is false?
| a. |
cholesterol is transported from the liver to peripheral tissues by low density lipoproteins |
|
| b. |
cholesterol can build up in the lining of arteries and arterioles, a condition called atherosclerosis |
|
| c. |
dietary cholesterol is most common in plant tissues, especially green leafy vegetables |
|
| d. |
healthy blood cholesterol is < 200 mg/dl total cholesterol / > 40 mg/dl HDL cholesterol ≤ 5.0 |
In: Anatomy and Physiology
Cellulose could provide an abundant and cheap form of glucose for humans.
Why is cellulose not a source of nutrients for humans?
Animals use starch and glycogen as an energy source, whereas plants use cellulose for energy.
Cellulose digestion must occur in a basic environment, but the human gut is acidic.
Humans cannot absorb the hydrolyzed form of cellulose.
Humans, and most vertebrates, lack the enzyme cellulase.
Vertebrate enzymes are unable to hydrolyze ( 1-4) linked glucose monomers.
In: Chemistry
Q. After active removal of small molecules (glucose, amino acids, vitamins electrolytes, etc.), urine inside tubules in the renal cortex does not become hypotonic relative to plasma. Why is this?
a. Urea concentration is high inside the urine.
b. Small molecules are removed by antiport mechanisms and are therefore replaced by other osmotically active particles.
c. Removal of small molecules results in a drop in osmotic pressure, water leaves the urine.
d. Urine does not tarry in the cortex, it enters the tubules in the medulla as soon as small molecules are removed.
e. ATP is consumed in the transport of small molecules; the breakdown of one molecule of ATP produces two molecules (ADP + Pi) of osmotically active molecules.
Q. What would happen if the loop of Henle does not exist, and the proximal convoluted tubule leads directly to the collecting duct?
a. The glomeruli will decrease in size.
b. The body can secrete nitrogenous waste only in the form of ammonia.
c. The concentration of Na+ and urea in urine will be the same.
d. Urine will become hypotonic to plasma.
e. Urine will have the same osmolarity as plasma.
Q. What would happen if the loop of Henle does not exist, and the proximal convoluted tubule leads directly to the collecting duct?
a. Volume of excreted urine would increase.
b. Metabolic activity in the kidney will decrease.
c. Urine osmolarity would decrease.
d. Urine would become isotonic with blood plasma.
e. All of the above.
Q. The role of antidiuretic hormone is to:
a. reduce water permeability in the loop of Henle.
b. reduce water permeability of the collecting ducts.
c. reduce total blood volume.
d. increase urine volume.
e. increase urine osmolarity.
In: Biology
The net income reported on the income statement for the current
year was $1061000. Depreciation recorded on plant assets was
$200000. Accounts receivable and inventories increased by $56000
and $37000, respectively. Prepaid expenses and accounts payable
decreased by $5000 and $51000, respectively. How much cash was
provided by operating activities?
1122000
1171000
$1400000.
1078000
In: Accounting
Consider my cost of capital is 4%. I have got three projects to choose from.
A)
NPV = -49000
IRR = 5.5%
B)
NPV = -40000
IRR = 6%
C)
NPV = -55000
IRR = 5%
One can observe that all NPV'sare negative but IRRwise projects are good. Kindly advise regarding how to critically evaluate the projects to choose the best one.
In: Finance