The drug 2,4-dinitrophenol (DNP) makes the mitochondrial inner membrane permeable to H . The resulting disruption of the proton gradient inhibits the mitochondrial production of ATP. What additional effect would DNP have on the transport of ATP out of the mitochondrial matrix?

a. None, because ATP export is not coupled to the movement of protons across the inner membrane.
b. ATP transport will increase because ATP synthase will be forced to operate in the "reverse" direction.
c. ATP transport will decrease because less ATP will be available to diffuse across the inner membrane.
d. ATP export will decrease because its carrier exploits the difference in voltage across the inner membrane.
e. None, because the inner membrane is permeable to ATP

The correct answer is "C": ATP transport will decrease because less ATP is available to diffuse across the membrane.

Explanation:

2,4-dinitrophenol,or DNP, causes uncoupling of oxidative phosphorylation in mitochondria.

Oxidative phosphorylation is a mechanism of ATP sythesis by phosphorylation of ADP for which energy is obtained by eletron transport and it takes place in mitochondria.

DNP is proton ionophore that dissipate proton gradient across inner mitochondrial membrane.In other words, DNP act as an "uncoupler" that makes the inner mitochondrial membrane 'leaky' to protons. Protons move back into the mitochondrial matrix,hence no proton is available to be used by ATP synthase(which produces ATP from ADP and inorganic phosphate using proton gradient.)This results in decrease ATP production.And since ATP is not formed,the energy that is produced from electron transfer is lost as heat.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.