Milad

Ive drawn this chart regarding a few general things about each step. However i am not certain if the membrane potentials are correct. Resting State(Stable) ++++ +++++ __________ ------------ Depolarization (Unstable) ++--++-++ __________ --++--++-- Rising Action Potential (Unstable) ++--++-++ __________ --++--++-- Falling Action Potential (Unstable) ++--++-++ _________ --++--++-- Undershoot(Repolarization) (Stable) ++++++++ __________ -------------- This is perhaps the stupidest question of them all however, i cant take any risks.

My biology teacher mentioned in class that chemical signals(hormones) are connected to the amount of glucose in the bloodstream? When I asked him to elaborate he refused and said its not for high school.... . Anyways I tried researching on the subject, but no find. Do you guys have any clue how the two can be connected? I thought about Insulin (hormone) in respect to glucose, but i don't know. But is that really the only hormone correlated with glucose. there must be others?

I appreciate your help. I've managed to improve my work, thank you.

...per minute? In terms of the Krebs Cycle, why do we on average exhale 12 times. I am utterly confused at the question my teacher has asked us in class....

Thank you. However Im still completely confused about why we exhale 12 times a minute?

form a bowl, from the paper!!! surrounded in maskin tape, concentrate the paper on the bottom of the bowl in order to produce a cushion.

Greetings and salutations! I am absolutely worried that the following assignments are wrong in some way. Could you guys help me out, on this one my teacher at school isnt very responsive to these kind of things... MY anaswers seem ok but i dont know... BTW Why do we exhale 12 times a minute im still quite unsure Glycolysis 1. In one sentence, what occurs to the glucose molecule during glycolysis? Glycolysis is the splitting of sugar (glucose). 2. Why is glycolysis divided into two phases? Glycolysis is divided into 2 major phases: Energy Investment and Energy Production. In Energy investment 2 ATP molecules are used up, and in Energy Production 4 ATP molecules are produced. This gives off a net worth of 2 ATP molecules produced from Glycolysis.The reason for this split is the fact that the first 5 steps need energy first(2 ATP molecules) to convert glucose into Glyceraldhyde 3-phosphate molecules. Where in the next 5 steps the Glyceraldhyde 3-phosphate molecules are converted to pyruvrate molecules in order produce ATP. Therefore, there is an energy investment phase and an energy payoff phase. 3. What are enzymes and what role do they play in glycolysis? Enzymes are catalytic proteins that lower the activation energy in reactions, in order for them to proceed at a faster rate. In each of Glycolysis’s 10 steps, a specific enzyme catalyze the reaction. For instance the enzyme hexokinase phosprylates glucose transforming it into glucose-6-phosphate. 4. Show the balanced chemical equation for the formation of ATP from ADP. Be sure to indicate "energy" as a reactant or product. ATP+H20->ADP+P+energy ΔG=-30.5 kj/mol 5. Show the balanced chemical equation for the formation of ADP from ATP. Be sure to indicate "energy" as a reactant or product. ADP+P+energy->ATP+H2O 6. Which of the above two reactions must occur more often in glycolysis? Why? The hydrolysis of ATP in order to provide energy for the reaction to continue/occur. 7. What molecule is eventually produced by glycolysis? How many? 2 Pyruvrate Molecules 8. What else does glycolysis produce? 2NADH Krebs Cycle 1. What two molecules, produced by glycolysis, does the Krebs cycle begin with? 2 Acetyl-CoA 2. Where does the Krebs’s cycle occur? In the Mitochondrial Matrix 3. What must be present in order for the Krebs’s cycle to begin? Oxygen and 2 Acetyl-CoA 4. Why do we exhale 12 times per minute? That’s how long it takes for the Krebs cycle to go through 12 times (and produce 24 CO2 molecules) – which are eliminated through exhalation. Every exhalation represents one Krebs cycle process throughout the body 5. For each molecule of glucose, how many pyruvate molecules are formed? How many carbon atoms are in each pyruvate molecule? For Each molecule of Glucose, 2 pyruvate molecules are formed. Each pyruvate molecule is made up of 3 carbon atoms 6. What is the total number of carbon dioxide molecules formed during the Krebs cycle? 2 Carbon Dioxide Molecules are formed. 7. What high energy compounds are produced during the Krebs cycle? How many of each are produce from a molecule of glucose? (Hint: be careful here - track the number of pyruvates). 2 ATP Molecules, 6 NADH, 2 FADH2, and 4 CO2 molecules