MCQ 2. glycolysis…try em’

The enzyme used for step five (5) of the glycolysis pathway(dihydroxyacetone phosphate to glyceraldehyde 3 phosphate) is:

A. Hexokinase

B. Triose phosphate kinase

C. Pyruvate kinase

D. Triose phosphate isomerase

E. Biphosphate isomerase

CHOOSE THE CORRECT ANSWER. (ONE CHOICE ALLOWED)

Don’t all rush…..

 

Arsenate effects on glycolysis by unknown.

Soooo, there is a question….Why is arsenate poisonous to us humans? This is because arsenate bothers lol enters the glycolysis pathway 😦 It attaches at step 6. Gonna post a picture in my next post of the pathway for u folks who cant remember. When arsenate attcahes at this step it replaces phosphate gaving 1-arseno 3 phosphoglycerate instead of 1,3 bisphosphate glycerate. A high energy bond forms, since arsenate is very sensitive to water, water hydrolyses the bond gaving the product which would usually be formed in step 7 ( 3 phosphoglycerate). This is a problem because the product forms before it should and therefore does not reach the enzyme so the enegry released cannot be harvested to generated ATP. Arsenate wastes energy by the uncoupling phosphotransfer reaction so its very POISONOUS.

The video is very informative and well explained although he could have did a better representation of the steps of glycolysis and better diagram such as slides or something to make the video more appealing.

SOURCES:

ENZYME: MEDICAL TREATMENT TIMELINE

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——> INDIGENOUS PEOPLE

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Indigenous people from South america and Africa was aware about fruits containing lots of enzymes. :O

PINEAPPLE!!!

*** Contains enzyme called bromelain

*** Highest [enzyme] in the leaves and stalk of the unripe fruit.

*** Applied to dislocated joints and sprained limbs to BOOST!!! healing process

——> 17th-18th century

Rene Antoine Ferchault de Reaumur above studied the activity of digestive juices. He fed a crow with meat in a closed punctured metal capsule. The bird excreted the capsule so he knew that the food in the digestive system is NOt mechanically processed BUT dissolved by a certain substance. Later on a priest discovered gastric juices.

——>19th century

Louis Pasteur carries out research on “ferments”

French chemist, Louis Pasteur researches the processes of rot and fermentation, which are important processes in tanning (making hide into leather) baking, food and brewing (the Pasteur family made their living from tanning). Pasteur demonstrates that these processes are caused by certain proteins that excrete living microorganisms. In early days, theses proteins were called “ferments”.

——->20th century

John Beard treats cancer patients with enzymes

Scottish embryologist John Beard treats cancer patients with living enzymes extracted from the pancreas.  His book “The Enzyme Treatment of Cancer” is published in 1911.

 

QuizTIME (amino acids)

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INSTRUCTIONS. CHOOSE A LETTER THAT CORRESPONDS TO YOUR CHOICE OF THE CORRECT ANSWER.

A. 1,2 & 3 correct

B. 1& 3 correct

C. 2 & 4 correct

D. only 4 is correct

E. all are correct

The following are termed essential amino acids in the human body:

1. Leucine

2. Glycine

3. Valine

4. Tyrosine

Good luck yall. Make a guess lol 😛