Biology, 05.10.2019 13:00, ftbluedevil
In a series of experiments, avery treated heat-killed nonvirulent s bacteria with enzymes that degraded the proteins, dna, and rna of the s bacteria, then mixed this with nonvirulent r bacteria. s cells grew in all cases except the samples with degraded dna. what did this demonstrate?
a. protein, dna, and rna from the s bacteria are all necessary for bacterial transformation to occur.
b. dna from the s bacteria is necessary for bacterial transformation to occur.
c. rna from the s bacteria is necessary for bacterial transformation to occur.
d. protein from the s bacteria is necessary for bacterial transformation to occur.
Answers: 2
Biology, 21.06.2019 18:00, gissell30
Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.
Answers: 3
Biology, 21.06.2019 22:20, yasmincastor
Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3
Answers: 1
Biology, 22.06.2019 08:00, rcmhargoux9546
Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b. organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.
Answers: 1
In a series of experiments, avery treated heat-killed nonvirulent s bacteria with enzymes that degra...
Mathematics, 15.07.2019 20:00
Mathematics, 15.07.2019 20:00
Social Studies, 15.07.2019 20:00