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
Novosadov [1.4K]
2 years ago
11

You perform an experiment in which chromatin is isolated from sea urchin sperm cells and briefly digested with micrococcal nucle

ase. When the chromatin proteins are removed and the resulting purified DNA is analyzed by gel electrophoresis, you observe a series of DNA fragments that are multiples of 260 base pairs in length (that is, 260 bp, 520 bp, 780 bp, and so forth). a) Although these results differ somewhat from the typical results discussed in the chapter, explain why they still point to the likely existence of nucleosomes in this cell type. b) What can you conclude about the amount of DNA that is associated with each nucleosome
Biology
1 answer:
irga5000 [103]2 years ago
8 0

Answer:

a) DNA fragments associated with histone proteins are all multiple in length (i.e., 260 bp, 520 bp, 780 bp, etc), thereby suggesting the presence of a pattern of organization in the chromatin  

b) it suggests that each unit of organization (ie, each nucleosome) consists of 260 bp associated with chromatin proteins

Explanation:

The nucleosome is considered as the basic unit of chromatin. A nucleosome consists of approximately two turns of DNA wrapped around a core of eight histone proteins (i.e., a histone octamer). The histone octamer consists of two copies of each of the histones H2A, H2B, H3, and H4. Moreover, the nucleosomes are connected together by linker DNA sequences which vary between 10 and 100 bp in length.

You might be interested in
Which of the following characteristics of living things could be applied to an automatic door at a supermarket?
iVinArrow [24]
C. living things respond to stimuli in the environment
8 0
3 years ago
A lichen is an example of mutualism between a fungus and an alga.<br> True or False
erastova [34]

Answer: True

Explanation: It is not a single organism, there is a photosynthetic and symbiotic relationship between the algae and the fungus.

7 0
2 years ago
What mass of water in grams will fill a fish tank 100 cm long, 50 cm wide, and 30 cm high?
Natasha_Volkova [10]

Answer:

150,000cm^3, or 1,500m^3

Explanation:

The question is basically asking the volume of this rectangular tank.

The formula to find the volume is length x width x height.

This is because we're trying to find the area of the base (length x width), and then we're multiplying the base times the height, to get how much of the base area can fit in the height of the rectangle.

So, the answer is 100cm x 50cm x 30cm = 150,000cm^3, or 1,500m^3, because 1 meter = 100 centimeters.

6 0
3 years ago
What is the similarity and difference for j and k
valentina_108 [34]

Your right J is sexual reproduction, and K is asexual reproduction. But sexual reproduction requires the presences of a male and a female. But other asexual reproduction doesn't, and just requires sexual maturity. They produce offspring in the form of spores for example.

6 0
2 years ago
Which cell organelle is shown by the diagram above?
tatiyna

Answer:

cell membrane

Explanation:

The cell membrane in the diagram consists of lipids, bilayers, and proteins. The lipids, located within the cell membrane, are known as hydrophobic, meaning they are afraid of water. In other words, the lipids keep out the water. Whereas the bilayer, otherwise known as the phospholipid bilayer, is attracted to water. While the proteins simply enable molecules and other microscopic parts travel within and out the cell membrane, through the protein.

8 0
2 years ago
Other questions:
  • What do you call that missing part of the rock record?
    5·1 answer
  • Explain the types of energy transformations that occurs when a light bulb switch is turned on
    7·1 answer
  • Scientific researchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were
    12·2 answers
  • If two objects are compared at a certain distance, according to Newton’s law of universal gravitation, what is true? Complete th
    11·1 answer
  • Plz Answer! Which of the following describes a relationship of commensalism?
    14·2 answers
  • Should we clone animals that are going or have gone extinct (in other words bring them back
    9·2 answers
  • Which of the following are examples of a new substance being formed . check all that apply A )bubbles
    13·1 answer
  • What is the is the difference between the littoral and limnetic zone?
    6·1 answer
  • . Insulin controls the insulin level in ____________
    13·1 answer
  • The _____ is the center of a stem and can store food. cortex vascular cylinder pith receptacle
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!