How are lysosomes similar to vacuoles?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

What if it is did darwin used to support his theory of evolution

The activation energy for this reaction is 75 kj·mol–1. the enzyme catalase (found in blood) lowers the activation energy to 8.0 kj·mol–1. at what temperature would the non-catalyzed reaction need to be run to have a rate equal to that of the enzyme-catalyzed reaction at 25°c?