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The Conduction of protons by the F0 unit of ATP syntheses is blocked by modification of a single side chain by dicyclohexylcarboiimide (DCCD).
Write down the arguments for and against the production of the embryonic stem cells? Explain the difference between a tumor suppressor and an oncogene with respect to the real causes of the cancer?
Explain why does the accumulation of lactate cease after O2 is added? Explain why does the presence of O2 reduce the rate of glucose consumption?
Glucose is experimentally synthesized with C-14 at carbon 1, and employed as a substrate for aerobic metabolism.
Throughout an experiment utilizing potatoes and the enzyme catalase, the heated potato exhibited less gas production when exposed to the hydrogen peroxide. Describe why this happened?
If silicon-based life exists, would it be possible to consume carbon-based life, digest it, and use the products as nutrients? Explain why or why not?
Describe the term biological psychology and analyze its historical development. Recognize the significant theorists related with biological psychology.
This is to be a philosophical description.... What are the features of life? There are some things, similar to planets, stars, viruses and prions whihc have many of the features of life, however are
If you want 10mL of a 1mM nitrophenol solution and you have on hand a 50mM nitrophenol solution, how would you prepare it?
A 5.0 mL aliquot of a stock tryptophan solution was diluted by adding up 95 mL of water. The absorbance of that diluted solution was measured at 280 nm as 0.055 absorbance units. Determine the conce
If you wanted to prepare 100 mL of a 5mM ascorbic acid solution and you have on hand a 35mM ascorbic acid solution, how would you prepare it?
What is the need for photosynthesis and what is the waste product of photosynthesis? As well, given what you know about photo systems and how plants use visible light in the photosynthesis.
Describe the role of the urea cycle, and what are the effects on an individual of a deficiency in one of the required enzymes?
Explain how do respiration and/or photosynthesis influence homeostasis in a living organism?
Bisphenol A (BPA) binds to the estrogen receptor with a Kd of 2.1 x 10-7 M and an association rate of 1.3 x 106 M-1s-1. Compute the dissociation rate, kd, comprising appropriate units.
Cellulose could give a widely available and cheap form of glucose, however humans can't digest it. In your own words explain why cellulose can't be digested by humans.
A food manufacturer is advertising a latest cake mix as fat free. Hydrolysis of the cake mix yields glucose, glycerol, fructose and amino acids, molecules with hydrocarbon chains and a carboxyl grou
The four stages of the disposition of a toxic compound to evaluate its toxicity are absorption via membranes in a system, the distribution all through the system, the excretion and removal from the
Contained is an explanation of the signaling cascade which results from EGF stimulation of the Ras-MAPK pathway in cells.
The neuropeptide neurotransmitters are comprised in: a) Pain regulation. b) Stimulation of skeletal muscle. c) Inhibition of acetylcholine receptors. d) Mood regulation. e) Release of hormones.
What happens during neural divergence? In divergence, one neuron: a) is controlled by several neurons b) is controlled by several neurotransmitter substances
Show a complete and balanced reaction (all atoms or all bonds for structure) for the formation of diethyl ether from two ethanol molecules. (see: formation of ethers by dehydration of alcohols).
Draw the structure again (showing all bonds), and this time indicate the H bonding of dihydroxyacetone to water. Remember which atoms form H bonds -- you've seen this "rule" several times.
Draw the structure of ribose-5-phosphate (draw out ALL bonds including the bonds within the alcohol FG). Show the hydrolysis of sucrose to glucose and fructose (draw out ALL structures in the reactio
In a prolonged fast, plasma glucagon levels are elevated. Describe how this hormone leads to an activation of fatty acid oxidation and explain why this adaptation leads to a gradual but pronounced r