1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
trapecia [35]
3 years ago
13

Meselson and Stahl cultured E. coli for several generations in a medium with a heavy isotope of nitrogen, 15N. They transferred

the bacteria to a medium with a light isotope of nitrogen, 14 N. After two rounds of DNA replication, half the DNA molecules were light (both strands had 14N) and half were hybrids (15N-14N). What did the researchers conclude from these results?A. The nitrogenous bases in DNA molecules incorporate both 15N and 14N.B. DNA replication is semiconservative.C. Opposite DNA strands are complementary to each other.
Biology
1 answer:
Luda [366]3 years ago
5 0

Answer:

The correct answer is B. DNA replication is semiconservative.

Explanation:

With this experiment, Messelson and Stahl determined that there was a pattern in replication that left one original strand and added a new one in each case. Therefore, after two rounds, there will be two copies with "original" information exclusively and two copies with mixed strands or hybrids.

You might be interested in
Help, please. I'll give brainliest to the first person who gets it right.
AlladinOne [14]

Answer:

its d

Explanation:

4 0
3 years ago
Read 2 more answers
List the inputs and outputs of photosynthesis. What part(s) of the plant are responsible for taking in each of the inputs?
sergejj [24]

Answer:

List the inputs and outputs of photosynthesis. What part(s) of the plant are responsible for taking in each of the inputs?

6CO2 + 6H2O ------> C6H12O6 + 6O2

inputs                              outputs

6CO2= Carbondioxide(6 molecules of carbon and 12 molecules of oxygen)

6H2O= Water (12 molecules of hydrogen and 6 molecules of oxygen)

C6H1206= Glucose (6 molecules of carbon, 12 molecules of hydrogen and 6 molecules of oxygen)

6O2= Oxygen (12 molecules of oxygen)

The plant(s) part responsible for photosynthesis is the leaf because it contains the chloroplast that houses the chlorophyl which enable it to tap sunlight for photosynthesis to take place

Explanation:

8 0
3 years ago
]The diagram below shows the movement of water on Earth.
Genrish500 [490]

Answer:

The salinity at B is more than A

Explanation: It just be how it be

3 0
3 years ago
What part of the brain is highlighted in the diagram below?
valentina_108 [34]

Answer:

Cerebellum or brainstem

3 0
3 years ago
Read 2 more answers
Is it possible for a man and a woman, each with Type A blood, to have a child that is Type O?
miss Akunina [59]

Answer:

yes

Explanation:

Even though both parents still have blood type A, Dad can pass on either his A or his O gene version. Mom can also either pass on her A or her O. Because of this, you can see that there's 1 in 4 or 25% chance for a child to have  blood type O.

3 0
3 years ago
Other questions:
  • How can the nurse determine a patient's history of allergies? (select all that apply.) by administering a dose and monitoring th
    14·1 answer
  • Sections of our DNA that control what traits we have are called _____________________
    8·2 answers
  • Do viruses belong to a kingdom?
    5·1 answer
  • ________ are microbial infections acquired by hospital patients with noninfectious diseases because they are compromised hosts.
    11·1 answer
  • Why does one's heart beat fast as they run
    14·1 answer
  • A student recorded the height of each student in the school. She then made a bar graph of her results. She observed that
    12·2 answers
  • PLS HELP :( WILL GIVE BRAINLIEST + 25 POINTS!!
    5·1 answer
  • How forests can be better managed ?
    9·1 answer
  • Volcan activo en nicaragua
    11·2 answers
  • Pectin is the . Group of answer choices primary organic acid found in the skin of fruit coloring compound found within the cells
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!