Answer:
The correct answer is B.It was necessary that each of the two phage components, DNA and protein, be identifiable upon recovery at the end of the experiment
Explanation:
Hershey and chase in his experiment lebelled the T₂ bacteriophage with radioactive sulfur and radioactive phosphorus separately. Then they infect E.coli with T₂phage and separated phage from bacteria by centrifugation.
Because DNA contains phosphorus not protein, cells infected with phage containing radioactive phosphorous showed radioactivity bacause DNA enters the cell not protein confirming DNA is the genetic material and radioactive sulfur was found in supernatant.
1. E: Photosynthesis; D: cellular respiration
2. all Eukaryotic cells
3. cellular respiration does not consume carbon dioxide
4. the 200 calorie food contains less potential energy than the 300 calorie food
Answer:
D.evaporation of sweats warm the body.
Explanation:
It doesn't warmed the body, it races the heart beat when a person is being actively moved or doing something with great strength.
Answer:
The answers are A and C
Explanation:
Loess is a periglacial or aeolian (windborne) sediment, defined as an accumulation of 20% or less of clay and a balance of roughly equal parts sand and silt.