The graph shows how the activity of an enzyme changes at different temperatures. which statement best describes what happens to the enzyme when the temperature of the reaction increases to 63°c? a the enzyme is used up and the reaction reverses. b the enzyme begins to decrease the rate of the reaction. c the enzyme continues to increase the rate of the reaction. d the enzyme changes shape and can no longer speed up the reaction.

Answer

D..The enzyme changes shape and can no longer speed up the reaction.

Explanation:

We are a graph which shows the activity of an enzyme changes at different temperatures.

We have to find that which statement describe what happens to the reaction increases to 63 degrees.

We know that enzymes are biological catalyst and made from  proteins .

It does not change in the reaction.

Catalyst increase the rate of reaction but do not  any change in  the reaction.

Therefore , when temperature increase then rate of reaction increases upto optimized level and then decreases when temperature increases.

Hence,option D is true.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

answer: b

coz red blood cells marrow and circulates the body for 120 days.