# biochemistry

Suppose the concentration of glucose inside a cell is 0.1 mM and the cell is suspended in a glucose solution of 0.01 mM.
What would be the free energy change involved in transporting 10?6 mole of glucose from the medium into the cell? Assume T= 37 ?C. ANSWER: 5.93�10?6 kJ
What would be the free energy change involved in transporting 10?6 mole of glucose from the medium into the cell if the intracellular and extracellular concentrations were 1 mM and 10 mM, respectively? ANSWER:-5.93x10^-6 kJ
If the processes described in parts A and B were coupled to ATP hydrolysis, how many moles of ATP would have to be hydrolyzed in order to make each process favorable? (Use the standard free energy change for ATP hydrolysis.)
*I believe you need the answers from the previous two questions (posted above) to solve this, but I don't know how to use them. Any explanation would be appreciated!

1. 👍
2. 👎
3. 👁
1. Which statements about hydrogen bonds are correct?

1) Hydrogen bonds are the interaction between a hydrogen atom bonded to an electronegative element and the lone pair of electrons on a nearby electronegative atom.
2) The atom to which the hydrogen atom is covalently bonded is the hydrogen-bond donor.
3) The distance between the covalently bound H atom and its hydrogen-bonding donor is the sum of its van der Waals radii.
4) Hydrogen bonds can be stronger interactions than even charge-charge interactions.
Which statements about hydrogen bonds are correct?

1) Hydrogen bonds are the interaction between a hydrogen atom bonded to an electronegative element and the lone pair of electrons on a nearby electronegative atom.
2) The atom to which the hydrogen atom is covalently bonded is the hydrogen-bond donor.
3) The distance between the covalently bound H atom and its hydrogen-bonding donor is the sum of its van der Waals radii.
4) Hydrogen bonds can be stronger interactions than even charge-charge interactions.
2, 3, and 4 are correct.
1, 2, and 3 are correct.
1, 2, and 4 are correct.
All of the listed statements are correct.

1. 👍
2. 👎
2. 2. What is the role of ATP in the cell? (1 point)
Transporting energy within the cell
Absorbing water during photosynthesis
Transporting oxygen for respiration
Absorbing light energy for photosynthesis
3. What happens during photosynthesis? (1 point)
Heterotrophs consume ATP.
Heterotrophs produce ATP.
Autotrophs consume organic molecules.
Autotrophs produce organic molecules.
4. How are photosynthesis and cellular respiration related? (1 point)
Cellular respiration cannot occur without photosynthesis.
They each occur in completely different organisms.
Both depend on ATP as a source of energy.
Both produce more ATP than they use.

1. 👍
2. 👎

## Similar Questions

1. ### AP CHEMISTRY

A voltaic cell is constructed that is based on the following reaction. Sn2+(aq) + Pb(s) -> Sn(s) + Pb2+(aq) (a) If the concentration of Sn2+ in the cathode half-cell is 1.80 M and the cell generates an emf of +0.219 V, what is the

2. ### biochemistry

please explain how to get these answers (answers provided): 1. If this cell were a muscle cell (myocyte), how many molecules of actin could it hold? (Assume the cell is spherical and no other cellular components are present; actin

3. ### Biology

WHEN A NEURON IS AT REST, a. sodium ions are most concentrated inside the cell b. potassium ions are most concentrated inside the cell c. the outside of the cell is negatively charged. d. both b and c idk mayn i think D or A?????

4. ### Chem

Suppose that you want to construct a galvanic cell from nickel and cadmium. You use 0.01M sol of cadmium nitrate as one of the electrolytes. If you need a cell potential of 0.17V for this system, what concentration of NiCl2 should

1. ### AP CHEMISTRY

A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e− -> Cu(s) I2(s) + 2 e− -> 2 I−(aq) The cell is operated at 298 K with [Cu+ ] = 2.7 M and [I− ] = 2.7 M. (a) Determine E for the cell at

2. ### Biochem

The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration

3. ### Chemistry

A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell

4. ### science

Which of the follow comparisons would be an inaccurate analogy between prokaryotic cells and eukaryotic cells? A - A eukaryotic cell is like a college campus was a prokaryotic cell is like a one-room schoolhouse B - A eukaryotic

1. ### Chemistry

Using the half reaction potentials calculate the E^o cell for the Ni-Al cell. Ni (aq) + 2e- Ni (s) -0.25v Al3+ (aq) + 3e- Al (s) -1.66v Using that answer determine Ecell for Ni-Al cell when the concentration of Al3+ is 4.00M and

2. ### Bio

In order to maintain homeostasis, human cells must have a higher concentration of sodium ions outside the cell than inside the cell. In addition, the concentration of potassium ions must be higher inside the cell than outside the

3. ### chemistry,Ksp

Ksp The solutions at the two Pb electrodes of a concentration cell were prepared as follows: Cell A: A mixture of 1.00 mL of 0.0500 M Pb(NO3)2 with 4.00 mL of 0.0500 M KX (the soluble potassium salt of an unspecified monovalent

4. ### chemistry

The cell shown above is a concentration cell. Both cells contain a copper solution and have copper electrodes. The only driving force for this cell is the difference in the concentration of the copper solutions. The system will