All categories

3 years ago

What is the oxidizing agent in the citric acid cycle that is derived in part from the vitamin niacin?

Chemistry

1 answer:

nasty-shy [4]3 years ago

3 0

Answer:

NAD (Nicotinamide adenine dinucleotide)

Explanation:

NAD+ (or NADH in its reduced form) is important in cellular respiration as it acts as an electron carrier, providing a shuttle system for the movement of electrons. This drives a proton pump and generates ATP via oxidative phosphorylation. Niacin is a form of vitamin B3 that we get from our diet and is a precursor for NAD.

You might be interested in

What is carbonization?

Marianna [84]

Answer:Carbonization is the conversion of organic matters like plants and dead animal remains into carbon through destructive distillation.

HOPE IT HELPS

7 0

3 years ago

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

A certain liquid X has a normal freezing point of 7.60 °C and a freezing point depression constant K= 6.90 °C-kg-mol. Calculate

Dmitry [639]

Answer: The freezing point of solution is -5.11°C

Explanation:

Vant hoff factor for ionic solute is the number of ions that are present in a solution. The equation for the ionization of sodium chloride follows:

$NaCl(aq.)\rightarrow Na^{+}(aq.)+Cl^-(aq.)$

The total number of ions present in the solution are 2.

To calculate the molality of solution, we use the equation:

$Molality=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ in grams}}$

Where,

$m_{solute}$ = Given mass of solute (NaCl) = 7.57 g

$M_{solute}$ = Molar mass of solute (NaCl) = 58.44 g/mol

$W_{solvent}$ = Mass of solvent (liquid X) = 350.0 g

Putting values in above equation, we get:

$\text{Molality of }NaCl=\frac{7.57\times 1000}{58.44\times 350.0}\\\\\text{Molality of }NaCl=0.370m$

To calculate the depression in freezing point, we use the equation:

$\Delta T=iK_fm$

where,

i = Vant hoff factor = 2

$K_f$ = molal freezing point depression constant = 6.90°C/m

m = molality of solution = 0.370 m

Putting values in above equation, we get:

$\Delta T=2\times 6.90^oC/m.g\times 0.370m\\\\\Delta T=5.11^oC$

Depression in freezing point is defined as the difference in the freezing point of water and freezing point of solution.

$\Delta T=\text{freezing point of water}-\text{freezing point of solution}$

$\Delta T$ = 5.11 °C

Freezing point of water = 0°C

Freezing point of solution = ?

Putting values in above equation, we get:

$5.106^oC=0^oC-\text{Freezing point of solution}\\\\\text{Freezing point of solution}=-5.11^oC$

Hence, the freezing point of solution is -5.11°C

7 0

4 years ago

Name three variables that affect a living system

Gnesinka [82]

Environment, Temperature, and Food.

7 0

3 years ago

Why is knowledge of mineral properties important? Which properties might be most useful in construction? In jewelry-making? Expl

Mashcka [7]

Answers with Explanations:

1. Why is knowledge of mineral properties important?

Knowledge of mineral properties is important because it helps scientists know about the earth's history, particularly when it comes to "rock formations." It is also essential in order to know which minerals are economically important.

2. Which properties might be useful in construction?

Minerals have many physical properties (color, crystal form, hardness, luster, density, cleavage and fracture, etc.)

When it comes to construction purpose, the mineral's malleability is very important. This is the reason why "iron" is one of the most important minerals being used in buildings. It's malleability allows it to be framed into "steel," which is then used to make even bigger infrastructures and skyscrapers.

3. In jewelry-making?

When it comes to "jewelry-making," the hardness and luster of the mineral may be used as a basis. For example, the diamond can be determined from the rest of the minerals because it is the hardest and it has a brilliant-kind of luster.

5 0

4 years ago