non- spontaneous reactions which _____ energy, are called ____ reactions
require; endogenic
An example of an endogenic reaction is the creation of ATP from ___ and a phosphate group
ADP
what sugar does ATP have?
ribose
The threshold of activation energy is essential because without it molecules would _____ decay
spontaneously
During cellular respiration, what does the mitochondria break down?
carbohydrates
During photosynthesis, what conversions occurs?
CO₂ is reduced into glucose.
A researcher observes a metabolic pathway where the product of the fifth enzyme inhibits the activity of the first enzyme in the pathway. What type of regulation is this an example of?
Feedback inhibition
In a muscle cell performing strenuous exercise, glucose is broken down to produce ATP. Which of the following best describes this process in terms of energy and thermodynamics?
An exergonic reaction that increases the entropy of the universe.
In a cell, if the concentration of ATP is high, what process is most likely to be inhibited through feedback inhibition?
The breakdown of glucose via cellular respiration.
A scientist is studying an enzyme-catalyzed reaction and observes that the reaction rate decreases significantly when a specific molecule binds to the enzyme at a site distinct from the active site. What type of inhibition is most likely occurring?
Non-competitive inhibition
A scientist is studying a reaction that converts molecule A into molecule B and finds that the reaction requires an input of energy to proceed. According to the principles of thermodynamics, how would you classify this reaction?
Endergonic, because it requires energy input.
During photosynthesis, which of the following describes the role of water?
Water is oxidized to provide electrons.
