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
RideAnS [48]
2 years ago
10

E. coli cells grown on 15N medium are transferred to 14N medium and allowed to grow for two more generations (two rounds of DNA

replication). DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment?
A) one high-density and one low-density band

B) one intermediate-density band

C) one high-density and one intermediate-density band

D) one low-density and one intermediate-density band

E) one low-density band
Biology
1 answer:
Katyanochek1 [597]2 years ago
8 0

Your answer would be D.


Hope this helps.

You might be interested in
Crossing-over can occur during meiosis I in:
m_a_m_a [10]

Answer:

b. metaphase l.

3 0
3 years ago
Read 2 more answers
Type the correct answer in the box. Spell all words correctly. What are the types of wastewater? You can find two types of waste
Serggg [28]

Answer:

household and industrial wastewater

5 0
3 years ago
Which of the following fat-soluble vitamins is an antioxidant necessary for synthesizing visual pigments, can be found in butter
liubo4ka [24]

The correct answer is B. Vitamin A.

Vitamin A (retinol, retinoic acid) is a fat-soluble vitamin important for vision, growth, cell division, reproduction and immunity. It also has antioxidant properties.

Vitamin A is present in many foods, such as spinach, dairy products and liver. Other sources are foods rich in beta-carotene, such as leafy vegetables, carrots and cantaloupe. Your body transforms beta-carotene into vitamin A.

There are two dofferent types of vitamin A. The first type, preformed vitamin A, it is found in beef, poultry, fish and dairy products. The second type, provitamin A, is found in fruits,vegetables and other products of vegetable origin. The most common type of provitamin A present in foods and dietary supplements is beta-carotene.

Not consuming enough vitamin A, can cause diseases (which can be avioded with a good diet). Vitamin A plays a very important role in vision. On the one hand, it is essential for the production of the pigment consumed by photoreceptors responsible for vision in darkness. Therefore, low levels of vitamin A lead to night blindness.

4 0
2 years ago
Read 2 more answers
Which of these are examples of how bacteria are beneficial? (Select all that apply.)
ankoles [38]

Answer:

The bacteria in our bodies help degrade the food we eat, help make nutrients available to us and neutralize toxins, to name a few examples[8]; [9]; [10]. Also, the microbiota play an essential role in the defense against infections by protecting the colonized surfaces from invading pathogens.

Explanation:

hope this helps

8 0
1 year ago
If a tall stem is a dominant characteristic, how many tall alleles must be present for an offspring to express a tall trait?
drek231 [11]

The answer would be B

7 0
2 years ago
Other questions:
  • Which is another name for observations
    13·1 answer
  • 1. In your food chain above, explain why there’s an arrow pointing from your decomposer back to the plants.
    7·2 answers
  • How to answer this question in English?
    14·2 answers
  • Suppose that you are in charge of designing a fracking job site. Which of these locations would be most ideal for the site?
    13·1 answer
  • Please help me asap really need help thank you
    6·1 answer
  • Why is it important to regulate salt in cells?
    6·1 answer
  • Females have two of which reproductive structure? A. Uterus B. Vagina C. Urethra D. Ovary
    7·2 answers
  • Equation of photosynthesis
    10·1 answer
  • Why would a geologist be surprised by this model?
    8·1 answer
  • 100 POINTS
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!