Biology, 20.08.2019 02:30 abigailweeks10
Consider a culture medium on which only gram- positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a(n)
1) selective and differential medium.
2) enrichment culture.
3) differential and enrichment culture.
4) differential medium.
5) selective medium.
Answers: 3
Biology, 22.06.2019 07:30, china2221
The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?
Answers: 1
Biology, 22.06.2019 10:00, FailingstudentXD
Dna and rna share a number of similarities, but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna
Answers: 1
Biology, 22.06.2019 12:30, musa79
Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.
Answers: 1
Consider a culture medium on which only gram- positive organisms such as staphylococcus aureus colon...
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