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Andre45 [30]
3 years ago
14

Which of the following statements about DNA is false? A. DNA is the molecule that stores information an organism needs to surviv

e and reproduce. B. DNA is present in every organism on the planet. C. DNA is made up of smaller molecules called chromosomes. D. none of the above
Chemistry
1 answer:
VladimirAG [237]3 years ago
6 0

Answer:

<u>C. DNA is made up of smaller molecules called chromosomes.</u>

Explanation:

Chromosomes are thread like structure in the nucleus of the cell. DNA is the part of chromosomes so it is not made up of chromosomes. DNA is made up of Nucleotides.

All other statements are true because DNA is the integral part of every Organism.

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What is the protein that helps us identify the blood type
Gekata [30.6K]

Answer:

Antigens (more info below)

Explanation:

Antigens determine the blood type and may be either proteins or sugar molecule complexes (polysaccharides). Genes in the blood group antigen group provide instructions for the production of antigen proteins. Blood group antigen proteins serve a variety of functions within the red blood cell membrane.

hope I helped!

7 0
3 years ago
Heated air moves from baseboard heaters to the rest of the room in a process called
svp [43]
It’s called convection
5 0
3 years ago
A hard-water solution contains 4.8 g of calcium chloride. How much sodium phosphate in grams should be added to the solution to
alexgriva [62]

Answer:

4.7 g

Explanation:

The reaction that takes place is:

  • 3CaCl₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaCl(aq)

First we <u>convert 4.8 g of CaCl₂ into moles</u>, using its <em>molar mass:</em>

  • 4.8 g ÷ 110.98 g/mol = 0.0432 mol CaCl₂

Then we<u> convert CaCl₂ moles into Na₃PO₄ moles</u>, using the <em>stochiometric coefficients of the balanced reaction</em>:

  • 0.0432 mol CaCl₂ * \frac{2molNa_3PO_4}{3molCaCl_2} = 0.0288 mol Na₃PO₄

Finally we <u>convert 0.0288 moles of Na₃PO₄ into grams</u>, using it<em>s molar mass</em>:

  • 0.0288 mol Na₃PO₄ * 164 g/mol = 4.7 g

8 0
3 years ago
Air in a closed cylinder is heated from 25 degree C to 36 degree C. If the initial pressure is 3.80 atm what is the final pressu
Pavlova-9 [17]

Answer: 3.94 atm

Explanation:

Given that,

Initial pressure (P1) = 3.80atm

Initial temperature (T1) = 25°C

since the standard unit of temperature is Kelvin, convert 25°C to Kelvin

(25°C + 273= 298K)

Final pressure P2 = ?

Final temperature T2 = 36°C

(36°C + 273= 309K)

Since pressure and temperature are given while volume is held constant, apply the formula for Pressure's law

P1/T1 = P2/T2

3.80 atm / 298K = P2 / 309K

To get the value of P2, cross multiply

3.80 atm x 309K = P2 x 298K

1174.2 atm•K = 298K•P2

Divide both sides by 298K

1174.2 atm•K/298K = 298K•P2/298K

3.94 atm = P2

Thus, the final pressure is 3.94 atm

5 0
3 years ago
Read 2 more answers
Which organelles is found in plant and animal cells and is involved in making cellular energy?
tia_tia [17]

Answer:

The plant and animal cells are eukaryotic and contain well developed cellular organelles. 

The cell membrane, cytoplasm, chromosomes, and mitochondria are the structures that are present in both the plant and the animal cells. 

The cell wall and chloroplast are present only in the plant cell. 

8 0
3 years ago
Read 2 more answers
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