What would be the limiting factor for atp production by glycolysis in a strenuously exercising muscle that lacks lactate dehydrogenase? a. increased acidity from lactic acid, causing muscle damage b. the supply of nad+ c. the supply of adp e. the supply of pyruvate

The correct answer is option b. "the supply of NAD+".

Explanation:

Regarding cell's culture, a limiting factor is defined as an element added to the system who is essential for the proper growth of the cells or in the production of the element of interest. Even a small change in a limiting factor would cause a notorious effect in the cell's culture. In this case, a strenuously exercising muscle that lacks lactate dehydrogenase is being cultured. Given that lactate dehydrogenase is the enzyme that converts NAD+ to NADH and back, the limiting factor in the culture of the muscle is the supply of NAD+ because the culture lacks of the enzyme that produces it.

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.