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
egoroff_w [7]
1 year ago
9

If the conservative model had been correct, how many generations of bacterial cell division would have had to pass before mesels

on and stahl would have observed evidence of a band in the cscl gradient corresponding to a hybrid dna molecule containing both 14n and 15n?.
Biology
1 answer:
Reil [10]1 year ago
3 0

No generations or hybrid would form before meselson and stahl would have observed evidence of a band in the cscl gradient.

The conservative model predicts that, following a single replication, half of the newly formed DNA double helices will be made entirely of the original, or old, DNA, and the other half will be entirely new. Then, each double helix would be completely replicated during the second round of replication. After that, 25% of the double helices would be all new, and 25% would be entirely old. Thus, the fraction of entirely new DNA double helices would increase with each succeeding round of replication, but the total number of completely unique DNA double helices would remain constant. Therefore, no hybrid DNA molecule containing 14N and 15N is replicated in the conservative model.

To learn more about conservative model. Click, brainly.com/question/14025877

#SPJ4

You might be interested in
Is mitochondria a plant cell animal cell or both
OleMash [197]
Both plant and animal cells have mitochondria
5 0
2 years ago
Read 2 more answers
Need somebody to help!!!!
Alex777 [14]

Answer:

I would say the first option

Explanation:

8 0
2 years ago
Read 2 more answers
Colony collapse disorder that has been decimating bee colonies was first reported around 2006. Massive numbers of honey bees wer
BigorU [14]

This information can be useful to agriculture because bees are major pollinators of crops, so it is important to know which pesticides to manage in order to avoid risk to bee survival. That is option B.

Bees are one of the social insects that lives in societies that are based on a caste system.

Each caste performs a special task or series of tasks that serves as an economic importance to the agricultural system.

Pests such as parasitic mites cause poor agricultural yield. By using pesticides, which are protective chemicals, farmers have greatly improved crop yield.

The bee workers while in search of pollen from crops can be harmed from the pesticides that is being used to control parasitic mites. This can lead to Colony collapse disorder of the caste system of bees.

Therefore,  it is important to know which pesticides to manage in order to avoid risk to bee survival.

Learn more here:

brainly.com/question/22575738

3 0
3 years ago
The bacteria, Angelinus ballerinea secretes a compound that inhibits the growth of other Gram-positive bacteria. Scientists take
Bad White [126]

The bacteria, Angelinus ballerinea secretes a compound that inhibits the growth of other Gram-positive bacteria. Scientists take this compound and add chemical groups to it to make it more stable for use in humans to treat bacterial infections. This is an example of antibiotic.

<h3>What is antibiotic?</h3>
  • Antibiotics from the key class of glycopeptides can stop this process.
  • Through five H-bonds, these antibiotics bind to the C-terminal d-Ala-d-Ala of the murein precursor, lipid II, and immature peptidoglycan, preventing transglycosylation and/or transpeptidation during the production of the cell wall.
  • Contrarily, antibiotics have easier access to the thick, porous peptidoglycan layer in the cell walls of Gram-positive bacteria, allowing them to more easily enter the cell and/or interact with the peptidoglycan itself.
  • The two main antibiotics that prevent the synthesis of bacterial cell walls are penicillins and cephalosporins.
  • Penicillin is one of many antibiotics that assault the bacterial cell wall in order to operate.
  • The medications specifically stop the bacteria from producing peptidoglycan, a chemical that gives the cell wall the toughness it needs to live in the human body.

Learn more about antibiotic here:

brainly.com/question/6970037

#SPJ4

8 0
2 years ago
Weathering is the process by which rocks are broken down into smaller pieces. What is likely the main source of the weathering f
Leona [35]
I can’t see the image but I would guess animals such as deer or horse or elephants or any large animal have the ability to run over the rocks and turn them to smaller sediments
3 0
2 years ago
Read 2 more answers
Other questions:
  • Which process requires the sperm and egg cell
    9·1 answer
  • Which of the following is the correct formula for the compound disulfur pentoxide?
    15·1 answer
  • Which statement describes how favorable traits in a population relate to natural selection?
    12·2 answers
  • Which parts of Earth are included in the hydrosphere? Check all that apply.
    13·2 answers
  • Explain the water cycle in your own words.
    11·1 answer
  • The offspring of the cross-fertilization of pea plants with purple flowers and pea plants with white flowers are called Question
    13·1 answer
  • Explain hypothesis with scientific knowlage
    6·1 answer
  • Who first recognized the cell universal unit of life
    12·2 answers
  • The physical characteristics of an organism that result from its genes are referred to as its
    15·1 answer
  • All sensory information, with the exception of olfaction, must pass though the ________ as it travels to the cerebral cortex. ce
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!