BIOCHEMISTRY
ENZYMES AND METABOLISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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an increased chemical reactions because ATP will no longer be in the way
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divergence of metabolic pathways due to lack of ATP
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a decrease in chemical reactions because ATP is needed, but the cell can use carbohydrates, proteins or lipids instead
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a slow down and eventual cessation of chemical reactions because ATP is absolutely needed for chemical reactions to occur
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Detailed explanation-1: -The glycolysis pathway occurs in the cytoplasm outside the mitochondria, and requires no oxygen. During glycolysis, glucose is broken down into pyruvate. The initial reactions of the pathway produce triose phosphate, which produces ATP in the second sequence of reactions.
Detailed explanation-2: -What advantages can you see in having complex metabolic pathways within body cells to produce various substances, such as amino acids and ATP?-more control over reactions (can be halted/modified/sped up/slowed down at any step).
Detailed explanation-3: -Metabolic pathways are often regulated by feedback inhibition. Some metabolic pathways flow in a ‘cycle’ wherein each component of the cycle is a substrate for the subsequent reaction in the cycle, such as in the Krebs Cycle (see below).
Detailed explanation-4: -Feedback inhibition is when a reaction product is used to regulate its own further production. Cells have evolved to use feedback inhibition to regulate enzyme activity in metabolism, by using the products of the enzymatic reactions to inhibit further enzyme activity.