When the bacterium Serratia marcescens is grown on a sterile medium in a petri dish at 30° C, the bacterial colonies are cream colored. When this same bacterium is cultured under identical conditions, except at a temperature of 25° C, the colonies are brick red. This difference in color is most likely due to the
a. type of nutrients in the culture medium
b. sterilization of the culture medium
c. effect of temperature on the expression of the gene for color
d. effect of colony size on the synthesis of color pigments
Answers: 3
Biology, 21.06.2019 15:30
Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. when a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. is the behavior of the male goose an example of an adaptation?
Answers: 1
Biology, 21.06.2019 22:00
In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .
Answers: 1
Biology, 22.06.2019 01:30
Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.
Answers: 1
When the bacterium Serratia marcescens is grown on a sterile medium in a petri dish at 30° C, the ba...
Social Studies, 02.08.2019 20:50
History, 02.08.2019 20:50
History, 02.08.2019 20:50
History, 02.08.2019 20:50
Mathematics, 02.08.2019 20:50
Mathematics, 02.08.2019 20:50
Chemistry, 02.08.2019 20:50
Biology, 02.08.2019 20:50
Business, 02.08.2019 20:50
Mathematics, 02.08.2019 20:50
English, 02.08.2019 20:50
Mathematics, 02.08.2019 20:50
English, 02.08.2019 20:50