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Q: Why does enzyme activity in crease on the left side of the graph?
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What does a line slanting down from left to right represent on s velocity time graph?

A slanting line down from left to right represents an acceleration on the velocity time graph.


At which enzyme concentration is starch hydrolyzed the fastest and slowest?

Starch hydrolysis is fastest at an optimal enzyme concentration where substrate and enzyme are present in appropriate proportions for efficient catalysis. Below this concentration, the reaction rate will be slower due to limiting enzyme availability. Above this concentration, the reaction rate may decrease due to substrate saturation or enzyme inhibition.


When is an enzyme saturated with substrate?

As you increase the substrate, rate of reaction increases, till more enzyme is available. This is called as First order kine-sis. When all the molecules of enzymes are engaged in activity, rate cannot increase further. This is called Zero order kine-sis. Alcohol is the best example for both of this.If less quantity is consumed, it is metabolized by First order kine-sis and more is consumed it is metabolized by Zero order kine-sis.


How is deceleration represented on a velocity per time graph?

It is radial the velocity in a direction towards or away from a fixed point of reference (the origin) at a given time. The velocity time graph takes no account of motion in a direction across the radial direction.


When a person speaks brain waves and bloodflow are especially likely to reveal increased activity in the?

Broca's area in the left hemisphere of the brain. This region is responsible for speech production and language processing. Increased activity in this area is associated with the act of speaking.