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
ELEN [110]
4 years ago
15

Explain the structure and function of DNA. What important roles does the phosphate-sugar backbone, nitrogen bases, complementary

strands, and hydrogen bonds play in the structure of DNA?
Chemistry
1 answer:
Lina20 [59]4 years ago
4 0
DNA structure is a helix . DNA function is to form the hereditary code of a living organism. This involves physical and acquired traits ( eyes, hair, skin, tendencies). The roles you listed above all are part of the biological chemistry involved in the DNA process.
You might be interested in
what gases occur in the same percentages throughout the layers of the atmosphere?/A.Oxygen,Nitrogen/B.Nitrogen,Water Vapor C.Wat
Naddika [18.5K]
A. Oxygen and nitrogen. ( Just think NO nitrogen oxygen )
5 0
3 years ago
What is the percent composition of sulfur in H2SO4?
Triss [41]

Answer:

D (32.7%)

Explanation:

4 0
3 years ago
2HgO—>2Hg+O2. I start with 46.8 g HgO. What is my theoretical yield of O2?
jok3333 [9.3K]

Answer:

Theoretical yield = 3.52 g

Percent yield =65.34%

Explanation:

Given data:

Mass of HgO = 46.8 g

Theoretical yield of O₂ = ?

Percent yield of O₂ = ?

Actual yield of O₂ =  2.30 g

Solution:

Chemical equation:

2HgO  →   2Hg + O₂

Number of moles of HgO = mass/ molar mass

Number of moles of HgO = 46.8 g / 216.6 g/mol

Number of moles of HgO = 0.22 mol

Now we will compare the moles of HgO with oxygen.

                         HgO             :             O₂

                             2               :               1

                            0.22           :          1/2×0.22 = 0.11 mol

Theoretical yield:

Mass of oxygen = number of moles × molar mass

Mass of oxygen =  0.11 mol × 32 g/mol

Mass of oxygen = 3.52 g

Percent yield :

Percent yield = actual yield / theoretical yield × 100

Percent yield = 2.30 g/ 3.52 g × 100

Percent yield =65.34%

5 0
3 years ago
A car can accelerate from a standstill to 100 km/h [E] in 9.60s. calculate the average acceleration
Lelu [443]

Answer:

Acceleration is :

a = 2.89 m/s2

Explanation:

Acceleration : It is the change in the velocity of the object per unit time.

The object starts from the rest , so the initial velocity of the object is zero.

Initial velocity , u = 0

Final velocity = 100 km/h

Change the velocity to m/s because[ time unit is in second(9.60 s)]

1 km = 1000 m

1 hour = 60 x 60 sec = 3600 sec

1km/h=\frac{1000}{3600}m/s

1km/hr=\frac{5}{18}

100km/hr=\frac{5}{18}\times 100

v=\frac{5}{18}\times 100

v = 27.78 m/s

u = 0 m/s

time = 9.60 s

The acceleration"a" is calculated using :

a=\frac{v-u}{t}

a=\frac{27.78-0}{9.6}

a=\frac{27.78}{9.6}

a=2.89m/s^{2}

5 0
3 years ago
2 . a) b) (1) List three oxides of nitrogen ( 3ks) State Charles law (2mks) (111) A given mass of gas occupies 300cm at 900mmHg
Travka [436]

ask correctly so that your points cant make fun of others

7 0
3 years ago
Other questions:
  • A substance releases heat when it changes from
    11·1 answer
  • How many electrons in an atom could have n = 2, l = 1, ml = 0?
    9·1 answer
  • How are crops able to withstand the effects of certain herbicides?
    8·1 answer
  • C2F4 effuses through a barrier at a rate of 4.6x10-6 mol/hour, while an unknown gas effuses at a rate of 5.8x10-6 mol/hour. What
    15·1 answer
  • We immerse an iron strip Fe in a copper (II) sulfate solution (CP+ + S0?) which has a blue
    10·1 answer
  • What type of elements is on the right side of a Periodic Table?<br> What type is on the left?
    7·1 answer
  • The nervous system sends messages to control activities in the body. false true
    11·2 answers
  • Question 116 g of sunflower oil is
    15·1 answer
  • Help please ill do anything really!!!!!!!
    14·1 answer
  • How many hydrogen bonds connect adenine and thymine
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!