Which of the following statements is true about enzymes and substrates? a) Each enzyme has specialized sites that only fit certain substrates.
b)
Each enzyme is designed to work with substrates from all metabolic
reactions.
c) Each enzyme has many sites to fit all substrates.
d) Each enzyme can form many products from a specific set of substrates.

Black fur(b) in guinea pigs is dominant over white fur(b). find the probability of a homozygous offspring in a cross: bb x bb. a. 0% b. 25% c. 50% d. 75% e. 100%

Aremote community desperately needs more electrical energy. it is located in an area with the following characteristics: average wind speed of 15 – 20 km/hr some medium-sized rivers with slow-moving currents few coal deposits some oil exploration being conducted within 400 miles based on the above information, which energy source would be the most economical and safest for the community to pursue? a. fossil fuel b. hydroelectric c. nuclear d. wind

15. what can be inferred from the fact that there is little diversity in the form of mc1r gene found among individuals from equatorial africa?