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
guajiro [1.7K]
3 years ago
6

What role does DNA play in the production of a protein?

Chemistry
1 answer:
klemol [59]3 years ago
5 0

A

Explanation:

The coiling up of DNA with the help of histone proteins - to what is called heterochromatic regions-  is part of gene regulation. This makes genes inaccessible to RNA polymerase that makes mRNA from the genes. When the genes are exposed by DNA unwinding, these genes are transcribed and the resulting mRNAs are translated by ribosomes into proteins.

The DNA never unwinds completely, but rather does so region by region, because if it does so it would become so long that it wouldn't fit in the nucleus or cell.

You might be interested in
75.0 grams of MgCl, is dissolved in 500.0 g of water, density 1.00 g/ml. What is the MOLALITY of this solution?
ollegr [7]

Answer:

C

Explanation:

Check it. So u can know it

8 0
3 years ago
The Al2O3 crystal structure (corundum) consists of an HCP arrangement of O2- ions; the Al3 ions occupy octahedral positions. Wha
ddd [48]

Answer:

2/3

Explanation:

Crystals structures can also be seen when two elements combines together and the perfect example is Al₂O₃ which is given in the question above. Just like it is given in the question above, the kind of arrangement in the crystal structure for Al₂O₃ is called HCP which stands for Hexagonally Closed Pack.

The aluminum ions which is in form of Al³⁺ occupies the two-third[2/3] positions while the position that the oxygen ion occupies is one[1].

8 0
3 years ago
Which of these molecules is nonpolar?<br> O A. PF 3 <br>O B. 02 <br>O C. CO <br>O D. CHCI​
zloy xaker [14]
B is the answer


please mark me brainlist ^^
5 0
3 years ago
in heating a kettle of water on an electric stove, 3.34×10^3 J of thermal energy was provided by the element of the stove. yet,
insens350 [35]

Answer:

The percentage efficiency of the electrical element is approximately 82.186%

Explanation:

The given parameters are;

The thermal energy provided by the stove element, H_{supplied} = 3.34 × 10³ J

The amount thermal energy gained by the kettle, H_{absorbed}  = 5.95 × 10² J

The percentage efficiency of the electrical element in heating the kettle of water, η%, is given as follows;

\eta \% = \dfrac{H_{supplied} - H_{absorbed} }{H_{supplied}}  \times 100

Therefore, we get;

\eta \% = \dfrac{3.34 \times 10^3 - 5.95 \times 10^2}{3.34 \times 10^3}  \times 100 = \dfrac{549}{668} \times 100 \approx 82.186 \%

The percentage efficiency of the electrical element, η% ≈ 82.186%.

4 0
3 years ago
125.0 g of an unknown substance is heated to 97.0°C. It is then placed in a calorimeter than contains 250g of water with an init
Sveta_85 [38]
The heat released by the substance in the calorimeter is equal to  the heat absorbed by water which results to the decrease and increase in temperature, respectively.
We use m Cp ΔT to balance the heat involved 

(m Cp ΔT) subs in calorimeter = <span>(m Cp ΔT) water
</span>125 g * Cp * (97.0-23.5 ) C = 250 g *(4.18 J/C g)* (23.5-20)
Cp = 0.398 J/Cg

Answer is B 
4 0
3 years ago
Read 2 more answers
Other questions:
  • 10: Convert 77.0 L at 18.0 mmHg to its new volume at standard pressure.
    7·1 answer
  • if the pressure in a balloon is 20 atm at 20 K, what will be the pressure when the temperature is raised to 30K?
    15·1 answer
  • How many hours per year does a high school student spend in school? hours per year
    7·1 answer
  • The element oxygen, represented by the symbol O, is classified as
    6·1 answer
  • One reason people around the world use coal as an energy source is
    7·2 answers
  • If you had a list of ionic and covalent compounds, how you would be able to tell them apart and come up with a proper name?
    14·1 answer
  • How many moles are present in 45.0 g of lithium oxide (Li2O)?
    9·1 answer
  • What is the mass of 0.59L of SO2 at STP?
    12·1 answer
  • Are the electron geometries of water and ammonia similar?
    10·1 answer
  • For the following incomplete combustion reaction, what are the coefficients necessary to balance the equation:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!