A student built a model of DNA to show its helical structure in an attempt to display their knowledge of the chemical properties of the 3D structure. In fact, the teacher asked the entire class to create similar models. However, the teacher asks the students to incorporate a biological explanation for how each DNA molecule uniquely codes for different traits. Which component should be incorporated in the student models in order to meet the teacher's expectation for illustrating DNA's ability to code for unique traits? A) The DNA models should have different A:T, C:G ratios. B) The DNA models should have unique nucleotide sequences. C) The DNA models should have different angles of curvature for the helical strands. D) The DNA molecules should have alternating ribose and deoxyribose as the sugars in the backbone.

Answers

Answer 1

The DNA sequence determines the different traits, therefore, the student's DNA models should have unique nucleotide sequences.

What determines how each DNA molecule uniquely codes for different traits?

The different traits which are produced from the DNA molecule is dependent on the sequence of nucleotides in the DNA molecule.

The unique sequence of nucleotides are known as genes.

Therefore, the student's DNA models should have unique nucleotide sequences.

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Answer 2

Answer:

B) The DNA models should have unique nucleotide sequences

Explanation:

This answer is the only one that makes sense as it is the reason how only four different types of nucleotide (adenine, thymine, guanine, and cytosine) could be arranged into many different types of sequences to create different types of species.


Related Questions

What are the hazards of sodium chloride

Answers

Answer:

Eye: May cause eye irritation. Exposure to solid may cause pain and redness. 

Skin: May cause skin irritation. May be harmful if absorbed through the skin. 

Ingestion: May cause irritation of the digestive tract. May be harmful if swallowed. Ingestion of large amounts may cause nausea and vomiting, rigidity, or convulsions. Continued exposure can produce coma, dehydration, and internal organ 

Inhalation: May cause respiratory tract irritation. May be harmful if inhaled. Chronic: No information found.

Which factor is NOT important when choosing a conversion factor? *

•Unit placement of the numerator and denominator (top and bottom)

•Changing the value

•The value must equal 1

•Equivalent things in the numerator and denominator (top and bottom)

Answers

The factor that is not important when choosing a conversion factor is that the value must equal 1.

What is a conversion factor?

The conversion factor is used to convert values form one unit to another. This operation is common in science when calculations are made that involves units.

Now, the factor that is not important when choosing a conversion factor is that the value must equal 1.

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In the equation below
1. If a sample containing 12.5 moles of NH3 is reacted with excess CuO, how many moles of each product can be made?
N2=
Cu=
H20=

thanks!

Answers

Answer:

6.25 moles of N₂ is produced, and 18.8 moles of Cu and H₂O is produced.

Explanation:

We are given the chemical equation:

[tex]\displaystyle 2\text{NH$_3$}_\text{(g)} + 3\text{CuO}_\text{(s)} \longrightarrow \text{N$_2$}_\text{(g)} + 3\text{Cu}_\text{(s)}+3\text{H$_2$O}_\text{(g)}[/tex]

And we want to determine the amount of products produced when 12.5 moles of NH₃ is reacted with excess CuO.

Compute using stoichiometry. From the equation, we can see the following stoichiometric ratios:

The ratio between NH₃ and N₂ is 2:1. (i.e. One mole of N₂ is produced from every two moles of NH₃.)The ratio between NH₃ and Cu is 2:3. The ratio between NH₃ and H₂O is 2:3. (i.e. Three moles of H₂O or Cu is produced frome every two moles of NH₃.)

Dimensional Analysis:

The amount of N₂ produced:

[tex]\displaystyle 12.5\text{ mol NH$_3$} \cdot \frac{1\text{ mol N$_2$}}{2\text{ mol NH$_3$}} = 6.25\text{ mol N$_2$}[/tex]

The amount of Cu produced:

[tex]\displaystyle 12.5\text{ mol NH$_3$} \cdot \frac{3\text{ mol Cu}}{2\text{ mol NH$_3$}} = 18.8\text{ mol Cu}[/tex]

And the amount of H₂O produced:

[tex]\displaystyle 12.5\text{ mol NH$_3$} \cdot \frac{3\text{ mol H$_2$O}}{2\text{ mol NH$_3$}} = 18.8\text{ mol H$_2$O}[/tex]

In conclusion, 6.25 moles of N₂ is produced, and 18.8 moles of Cu and H₂O is produced.

Q4. Explain why the process is called reduction.

Answers

Answer:

The process is called reduction because any loss of electrons by one substance must be accompanied by a gain in electrons by something else, oxidation and reduction always occur together.

the gain of electron is called reduction.
this is because any loss of electrons from one substances must also mean a gain in electrons by something else, oxidation and reduction must happen together.

How many grams are equal to 413kg ?

Answers

Answer:

413000 grams

Explanation:

from model

why neon is special from other chemical elements​

Answers

Noble gases react very unwillingly, because the outermost shell of electrons orbiting the nucleus is full, giving these gases no incentive to swap electrons with other elements. As a result, there are very few compounds made with noble gases. Like its noble gas comrades, neon is odorless and colorless.

( 20 points plus brainliest! )
Which best describes DDT as a pesticide? Select all that apply.

A) DDT is able to target destructive insects.
B) DDT decomposes very slowly.
C) DDT can be controlled so it does not spread to other areas.
D) DDT results in antibiotic formation in livestock.
E) DDT is readily absorbed by animal tissue.
F) DDT contaminated ground water and runoff into streams, rivers, and oceans.

Answers

DDT was widely used as a pesticide for 20 years. Its use was banned after studies showed severe side effects were evident in humans, the environment, and animals as a result of DDT. DDT kills insects and other pests. DDT decomposes. DDT was genetically engineered. DDT bioaccumulates.

I think the answer would be A or C

7Mg(OH)2 how many elements are they?​

Answers

Answer:

3

Explanation:

magnesium

oxygen

hydrogen

What would the volume of a gas be at –150°C, if it had a volume of 693 mL at 45°C?

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Volume of gas at 40° C is 1.79 L

Refer to the attachment for solution ~

What volume of 1. 50m nacl contains 3. 40 moles of nacl?.

Answers

Let the volume be V

Molarity=Moles of solute/Volume of solution in L

Put values

1.50M=3.4/VV=3.4/1.5V=2.267L

What is the function of carbohydrates in living organisms? (Please use complete sentences)​

Answers

Answer:

Introduction. Alongside fat and protein, carbohydrates are one of the three macronutrients in our diet with their main function being to provide energy to the body. They occur in many different forms, like sugars and dietary fibre, and in many different foods, such as whole grains, fruit and vegetables.

Explanation:

pleaseee consider as brainlest if i helped you

Only smart people can answer 50points

Answers

Answer:

can you give brainliest please

Molar mass of Mg(NO_3)_2

24+2(14+48)24+2(62)24+124148g/mol

Moles of solute:-

35/1280.27mol

Now

Volume of solution=0.1L

Molarity:-

moles/volume0.27/0.12.7M

Where does reduction occur in an electrochemical cell?
O A. Cathode
O B. Porous barrier
O c. Anode
O D. Conducting wire

Answers

A. Cathode

The direction of electron flow in electrolytic cells, however, may be reversed from the direction of spontaneous electron flow in galvanic cells, but the definition of both cathode and anode remain the same, where reduction takes place at the cathode and oxidation occurs at the anode

20 POINTS!!!!!!!! NEED ANSWER ASAP
A container of an ideal gas at 300 Kelvin (K) has a volume of 2.5 liters (L). What is the calculated volume, in L, of the gas if the temperature is changed to 100 K?

0.83
1.2
7.5
120

Answers

Answer: 0.83

Explanation:

If the temperature of a 50ml sample of gas is changed from 200k to 400K under constant pressure what is a new volume of the gas?

Answers

Answer: 100 mL

Explanation:

Compounds where a metalloid with a relatively high oxidation number bears a hydroxyl group are usually:

Answers

Compounds where a metalloid with a relatively high oxidation number bears a hydroxyl group are usually amphoteric and impossible to predict.

What is a metalloid?

A metalloid is an element whose properties lie at te boarder line between the properties of metals and nonmetals . This means that a metalloid can behave as an acid/base.

Hence, compounds where a metalloid with a relatively high oxidation number bears a hydroxyl group are usually amphoteric and impossible to predict.

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Based on the kinetic theory, which statement is true? (5 points) Matter consists of only large molecules. Matter is made up of only charged particles. The particles of matter have zero kinetic energy and potential energy. The particles of matter are arranged in different ways for the different states.

Answers

Answer:

The particles of matter are arranged in different ways for the different states.

Explanation:

Matter can be made up of small/large molecules or even atomsMatter is also made up of non-charged particles (neutrons)Particles of matter possess kinetic and potential energyMatter is arranged in different ways for different states (solid, liquid, gas, plasma, etc.)

Give a simple meaning of the word viscosity in your own words.

Answers

Answer:

Viscosity is the measure of how much something can flow.

Explanation:

For example Honey is high in viscosity because it does not flow well. But water on the other hand is low in viscosity because it flows well

Viscosity is the property of fluids that corresponds to the microscopic transport of momentum by molecular diffusion.

Why do plants found in the understory have large, wide leaves?
to absorb as much sunlight as possible
to absorb as much water as possible
to absorb as many soil nutrients as possible
to prevent consumers from eating them

Answers

Answer:

A. to absorb as much sunlight as possible.

Explanation:

Because they are in the understory, it's a constant competition for sunlight to perform photosynthesis, so they need wider leaves to capture what is filtered by canopy trees.

Answer:to absorb as much sunlight as possible

Explanation:

What property of a substance does the titration process identify?
Concentration
Density
pH value
Mass

Answers

Answer:

Explanation:

Concentration. Titration is a process in which a solution of unknown concentration is determined by using a solution of known concentration


10. How much energy is needed to melt 30 g of H20 at 0°C ?

Answers

45 bc is probably the best answer

The following balanced equation shows the formation of ammonia. n2 3h2 right arrow. 2nh3 how many moles of nitrogen are needed to completely convert 6.34 mol of hydrogen? 1.02 mol 2.11 mol 12.68 mol 19.02 mol

Answers

The required moles of nitrogen which are needed to completely convert 6.34 moles of hydrogen is 2.11 moles.

What is the stoichiometry?

Stoichiometry of any reaction gives idea about the relative amount of reactants and products are present in any chemical reaction in terms of moles.

Given chemical reaction is:

N₂ + 3H₂ → 2NH₃

From the stoichiometry of the reaction:

3 moles of H₂ = reacts with 1 mole of N₂

6.34 moles of H₂ = reacts with 1/3×6.34=2.11 moles of N₂

Hence required moles of nitrogen are 2.11.

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An unknown substance is found to have a hydrogen concentration of 1.2 * 10 ^ - 2 , what is the pOH? Is it acidic or basic?

Answers

Answer:

12.1; acidic

Explanation:

I'm assuming the hydrogen concentration is H+.

So, first we must find pH.

pH = -log[H+]

I simply just plugged in the concentration.

I get 1.9 as the pH. This means that the substance is very acidic since it has a low pH.

Now to find poH.

poH + pH = 14

I simply plugged in once again!

I get 12.1 as the poH. This also determines that the substance is very acidic since it has a high poH.


What element goes in the middle of the Lewis structure?

Answers

Answer:

The atom that requires the largest number of electrons to complete its octet

Explanation:

hope this helps

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.

Answers

The changes occur in reaction are the bond in H₂ is broken, and new bonds are formed between hydrogen and oxygen atoms.

What is hydrogen bond?

Hydrogen bond is a type of chemical bond which is formed between the hydrogen atom and more electronegative atom due to high dipole interaction.

Given chemical reaction is:

2H₂ + O₂ → 2H₂O

In the above reaction hydrogen nucleus not loses proton inspite of that it was broken and new bond formation takes place in water.

Despite the fact that oxygen atoms attract electrons from hydrogen atoms, oxygen atoms do not gain electrons.

In the water molecule each electron of both hydrogens is shared with an oxygen atom.

As a result, in the preceding equation, the hydrogen molecule's bond is broken, a new bond is formed, and each hydrogen atom's electron is shared with an oxygen atom.

To know more about hydrogen bonding, visit the below link:

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Answer:

c and d on edge 2022

Explanation:

What does the reaction of an acid and a base produce.

Answers

Answer:

I believe that'd create neutral, or pure.

Explanation:

Consider the following equation.

H2O(l) + heat ⇌ H2O(g)

Which will occur if the temperature of the system is increased?

Answers

With the increase in temperature, the state of matter of water will changed.

What happen if the temperature of the system is increased?

If the temperature of water is increased then the state of matter will change from liquid state to gaseous state because the temperature break down the bonds that is present between two water molecules.

So we can conclude that with the increase in temperature, the state of matter of water will changed.

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Pure water freezes at 0° C (32* F) and boils at 100° C (212' F), a large range for a
liquid, and has an extremely high heat capacity. Why are these properties of water
important?

Answers

High specific heat capacity and long liquid range of water make it a good coolant especially in the nuclear plants

High specific heat capacity and long liquid range

High specific heat capacity implies that it takes a very large amount of heat for the temperature of water to change by 1K. This means that water does not heat up easily and does not loose heat easily.  Ideally, this informs the long liquid range of water.

These properties together make water a good coolant especially in the nuclear plants where temperatures could get very high.

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Can y’all answer this Plss!! 100 points

Answers

Refer to the attachment

V1=0.271L=271mL

Apply Boyles law

[tex]\boxed{\sf {P\propto \dfrac{1}{V}\atop \implies \dfrac{P_1}{P_2}=\dfrac{V_2}{V_1}}}[/tex]

So

0.92/0.55=473.218/V1V1=472.218(0.55)/0.92V1=0.271L

Which scenario would be classified as potential energy?
A car driving up a hill
A car sitting on top of a hill
The plane flying the skydiver to the jump mark

Answers

Answer:

a car sitting on top of a hill

Explanation:

if it's sitting it has no kinetic energy

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