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
Fantom [35]
3 years ago
6

give an example for each of the four basic substances of a cell (carbogydrates, proteins, lipids, and nucleic acids)

Chemistry
2 answers:
Oksanka [162]3 years ago
8 0
Carbohydrates<span> are the sugars, starches and fibers found in fruits, grains, vegetables and milk products

proteins are meats.

</span>Lipids<span> are a group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, phospholipids, and others.
</span>
nucleic acids are <span>complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.</span>

Anarel [89]3 years ago
6 0

Answer:

Carbohydrates can be defined as the sugars, starch and fibers found in the fruits, grains, milk products and vegetables.

They are the most form form of energy found in nature. It is a source of instant energy.

Proteins can be defined as the polymer which is composed of amino acids. It is organic compound made of carbon, hydrogen and oxygen, nitrogen and sulfur.

It is found in the non vegetarian diet, meat, chicken, egg. Pulses and soya bean are also some sources of protein.

Nucleic acids are the polymer of nucleotide which contains sugar, nitrogenous bases and phosphate bond. It is the genetic material found in all the living organisms. Example: DNA and RNA.

Lipids commonly known as fat. These compounds are found in the form of fat inside the body of an organism. Example: oil, waxes and vitamin A, D, E,K.

You might be interested in
Which of the following is not true about limiting and excess reagents?
Bogdan [553]

Answer : The incorrect option is, (d) The reactant that was the smallest given mass is the limiting reagent.

Explanation :

Limiting reagent : It is the reagent that is completely consumed in the chemical reaction when the chemical reaction is complete. No amount is left after the reaction is complete. The amount of product obtained is determined by the limiting reagent. A balanced equation is necessary to determine which reactant is limiting reagent.

Excess reagent : It is the reagent that are not completely consumed in the chemical reaction. That means the reagent is in excess amount. Some amount of the excess reagent is left over after the reaction is complete.

From this we conclude that the options, A, B and C are correct. While the option D is incorrect.

Option D is incorrect because it is not necessary the reactant that was the smallest given mass is the limiting reagent but it is judge by the number of moles present in the reaction.

Hence, the incorrect option is, (d)

4 0
3 years ago
171 g of sucrose ( MW of 342, melting point 186 oC, boiling point very high, and vapor pressure is negligible) is dissolved in o
Fantom [35]

The complete question is as follows: 171 g of sucrose ( MW of 342, melting point 186 oC, boiling point very high, and vapor pressure is negligible) is dissolved in one liter of water at 25 oC. At 25 oC the vapor pressure of water is 24 mmHg. Which value is closest to the vapor pressure (VP) of this solution at 25 oC?

a. 16mm Hg

b. 24mm Hg  

c. 20mm Hg  

d. 12mm Hg

Answer: The vapor pressure (VP) of this solution at 25^{o}C is closest to the value 24 mm Hg.

Explanation:

Given: Mass of sucrose = 171 g

Mass of water = 1 L = 1000 g

Vapor pressure of water = 24 mm Hg

As moles is the mass of substance divided by its molar mass. Hence, moles of water (molar mass = 18.02 g) is calculated as follows.

Moles = \frac{mass}{molar mass}\\= \frac{1000 g}{18.02 g/mol}\\= 55.49 mol

Similarly, moles of sucrose (molar mass = 342 g/mol) is as follows.

Moles = \frac{mass}{molar mass}\\= \frac{171 g}{342 g/mol}\\= 0.5 mol

Total moles = 55.49 + 0.5 mol = 55.99 mol

Mole fraction of water is as follows.

Mole fraction = \frac{moles of water}{total moles}\\= \frac{55.49}{55.99}\\= 0.99

Formula used to calculate vapor pressure of the solution is as follows.

P_{i} = P^{o}_{i} \times \chi_{i}

where,

P_{i} = vapor pressure of component i over the solution

P^{o}_{i} = vapor pressure of pure component i

\chi_{i} = mole fraction of i

Substitute the values into above formula to calculate vapor pressure of water as follows.

P_{i} = P^{o}_{i} \times \chi_{i}\\= 24 mm Hg \times 0.99\\= 23.76 \\or 24 mm Hg\\

Thus, we can conclude that the vapor pressure (VP) of this solution at 25^{o}C is closest to the value 24 mm Hg.

4 0
3 years ago
The law of conversion states that mass is never created or destroyed. Explain how this law requires all chemical equations to be
ikadub [295]

Answer:

See Explanation

Explanation:

The Law of Conservation of Matter as applied to chemical reactions says that matter is neither created nor distroyed, only changed in form. This implies that the mass of substances going into a reaction process must equal the mass of products generated during the reaction process.

Empirically,

∑ mass reactants = ∑ mass products

One can test this idea after balancing a chemical equation by determining the sum of formula weights of reactants and products; then compare. If reaction was properly balanced, the total mass reactants = total mass of products.

Example:

Combustion of Methane =>  CH₄(g) + 2O₂(g)   =>  CO₂(g) + 2H₂O(l)

Equation Weights =>             16amu + 64amu <=> 44amu +  36amu

Mass Reactants = Mass Products  => 80amu <=> 80amu.

__________________

*amu = atomic mass units => sum of atomic weights of elements

3 0
3 years ago
2N2O(g) +3O2(g) 4NO2(g). Which equilibrium expression is correct?
elena-14-01-66 [18.8K]
<span>Kc = [NO2]^4 / [N2O]^2[O2]^3</span>
4 0
3 years ago
Read 2 more answers
I’m only having a problem with this number that’s all if anyone could help I would really appreciate it! Thank you!
Masja [62]

Answer:D.

Explanation:i used photo math. It is really helpful when I'm doing math homework etc...

7 0
3 years ago
Other questions:
  • How acids cause burns. Please explain
    11·2 answers
  • Heat is transfer directly from one particle of matter to another by the process of
    9·2 answers
  • What screening is used to test for lung disease
    9·2 answers
  • Which planet contains high levels of carbon dioxide in its atmosphere resulting in a runaway greenhouse effect
    10·1 answer
  • Though a needle is several times as dense as water, a small needle can be made to float on the surface of water if placed carefu
    14·2 answers
  • PLEASE HELP!!!!!
    8·2 answers
  • Practically: Add 1.66 ml of my 0.3M lemonade to a 15 ml microcentrifuge tube. Add 3.33 ml of your diluent (water, in this case)
    10·1 answer
  • Which is composed of alkenes? welding torch fuel polystyrene cups propane gas degreaser containing hexane
    5·2 answers
  • what element is this atom? need the answer in 30 minutes. Feel free to answer the other questions. NEED HELP!
    9·2 answers
  • How many moles of N20 gas would have a volume of 3.8 L at 460 mmHg and 77°C?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!