HELP ASAP!!! Plzzz

In a phospholipid, which components constitute the hydrophilic head? Select the correct answer below: Question 1 options: amino-

KIM [24]

Answer: Option (a) is the correct answer.

Explanation:

A lipid that contains a phosphate group in its molecule is known as a phospholipid.

These are the primary molecules present in a plasma membrane. These tend to contain two hydrophobic fatty acid tails and one hydrophilic head.

Hydrophilic means water loving in nature.

As phosphate group is a polar group due to this the hydrophilic region present in a phospholipid is able to interact with water.

In an amino-alcohol modified phosphate, ester groups, and glycerol, the glycerol is hydrophobic in nature. It also contains two fatty acids and a phosphoric acid which are present as ester. The polar head that mainly consists of phosphate group is hydrophilic and thus, it helps in combining to a water molecules.

Hence, we can conclude that in a phospholipid, amino-alcohol modified phosphate, ester groups, and glycerol are the components which constitute the hydrophilic head.

4 0

3 years ago

g Hydrogen iodide, HI, decomposes at moderate temperatures according to the equation The amount of I2 in the reaction mixture ca

atroni [7]

Answer:

Equilibrium constant, Kc = 0.023

Explanation:

Equation for the decomposition of Hydrogen iodide is given below:

2HI ----> H₂ + I₂

Initially, the number of moles of the reactant and the products are given as follows:

n(HI) = 2 * 3.800 moles = 7.600 moles

nH₂) = 0.000 moles

n(I₂) = 0.000 moles

At equilibrium, the equation becomes: 2HI <----> H₂ + I₂

Number of moles of the reactant and the products are given as follows:

n(HI) = 7.600 - (0.886 + 0.886) moles = 5.828 moles

nH₂) = 2 * 0.443 = 0.886 moles

n(I₂) = 2 * 0.443 = 0.886 moles

Equilibrium constant, Kc = [H₂] [I₂] / [HI]²

Equilibrium constant, Kc = (0.886) * (0.886) / (5.828)²

Equilibrium constant, Kc = 0.023

5 0

3 years ago

In yeast, ethanol is produced from glucose under anaerobic conditions. A cell‑free yeast extract is placed in a solution that co

nadezda [96]

Answer:

0.35 milli moles of ethanol can be theoretically be produced under these conditions.

Explanation:

$C_6H_{12}O_6 + 2 ADP + 2 Pi\rightarrow 2 C_2H_5OH + 2 ATP + 2 CO_2$

Moles of glucose = $3.50\times 10^2$ milli mole

Moles of ADP = 0.35 milli mole

Moles of Pi = 0.35 milli mole

Moles of ATP = 0.70 milli mole

As we can see that ADP and Pi are in limiting amount which means tat they are limiting reagent. So, the moles of ethanol produced will depend upon the moles of ADP and Pi.

According to reaction, 2 moles of ADP gives 2 moles of glucose.

Then 0.35 milli moles of ADp will give :

$\frac{2}{2}\times 0.35 mmol=0.35 mmol$ of ethanol

0.35 milli moles of ethanol can be theoretically be produced under these conditions.

5 0

4 years ago

The change of state from solid to gas without an intermediate liquid state is called evaporation. true and false

-BARSIC- [3]

It is false, evaporation is when water vapor heats and goes from a liquid to a gas. The change of state from solid directly to gas is called sublimation

8 0

3 years ago

Basic substance formed by Chlor- alkali process

Andre45 [30]

The chloralkali or chlorine-alkali industry is an essential component of the chemical industry and generates sodium hydroxide and chlorine via the electrolysis of NaCl (table salt). The prime raw material is brine, that is, a saturated solution of NaCl, which is attained from the deposits of natural salt.

The products of this industry possess various essential uses like chlorine is used as a disinfectant, and is used to purify water, and for various other uses. Caustic soda or sodium hydroxide is also used for various applications like making cleaning agents and soap, making paper, purifying bauxite, and making rayon.

4 0

3 years ago