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Alecsey [184]
3 years ago
12

[Ca2+] within the endoplasmic reticulum (ER) is 10-3M. Cytosolic [Ca2+] is 10-7M. Lysosomes in mammalian cells have an internal

pH of 4.0. Cytosolic pH of a typical mammalian cell is 7.0. Which transport reaction has a greater (more positive) Delta Gc, H+ import into lysosomes or Ca2+import into the ER?A. H+ import into the lysosome because it has the steeper concentration gradient.B. Ca2+ import into the ER because it has the steeper concentration gradient.C. H+ import into the lysosome because it is a monovalent cation.D. Ca2+ import into the ER because it is a divalent cation.E. Delta Gc is the same for both ions because their concentration gradients are the same.
Chemistry
1 answer:
Pani-rosa [81]3 years ago
8 0

Answer:

B. Ca2+ import into the ER because it has the steeper concentration gradient

Explanation:

ΔGt =  RT㏑(C₂/C₁)

where ΔGt is the free energy change for transport; R = 8.315 J/mol; T = 298 K; C₂/C₁ is ratio of concentrations inside and outside each organelle.

For Ca²⁺ import

ΔGt = 8.315 J/mol * 298 K * ㏑(10⁻³/10⁻⁷)

ΔGt= 3.42 kJ/mol

For H⁺ import

ΔGt = 8.315 J/mol * 298 K * ㏑ (10⁻⁴/10⁻⁷)

ΔGt = 2.73 kJ/mol

From the above values, ΔGt is greater for Ca²⁺ import because it has a steeper concentration gradient

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uysha [10]

Answer:

E. 16.6 mol HCl

Explanation:

The equation for the reaction is;

Zn + 2 HCl --> ZnCl2 + H2

From the reaction 2 moles of HCl produces 1 mole of ZnCl2

Therefore; 8.3 moles of ZnCl2 will be produced by;

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  Therefore;  E.  16.6 mol HCl

4 0
3 years ago
. Find the mass of 0.159 mol silicon dioxide.​
Juliette [100K]

Answer:

9.55 grams of SiO2

Explanation:

If the mass you mean by grams:

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4 0
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Sophie [7]

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Explanation:

3 0
3 years ago
Which equation is NOT balanced?
lakkis [162]

Answer:

C

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3 0
3 years ago
If 21.5 mol of an ideal gas is at 9.65 atm at 10.90 ∘C, what is the volume of the gas?
mamaluj [8]
<h3>Answer:</h3>

51.93 L

<h3>Explanation:</h3>

From the question we are given the following components of an ideal gas;

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Pressure, P = 9.65 atm

Temperature, T = 10.90°C, but K= °C + 273.15

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We are required to calculate the volume of the ideal gas.

We are going to use the ideal gas equation which is given by;

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To get the volume, we rearrange the formula to get;

V = nRT ÷ P

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Thus, the volume of the ideal gas is 51.93 L

3 0
3 years ago
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