Answer:
The correct answer is D.
Explanation:
To act on target cells, insulin binds to a specialized protein that is located on the membrane of your target cells: the insulin receptor. When insulin binds to the receptor, it activates a cascade of signals within the cell (a process called signal transduction), which is essential for insulin to have an effect on its target tissues. Insulin increases the entry of glucose into cells and causes the number of certain proteins specialized in glucose transport to increase in the membrane of their target cells, such as adipocytes (adipose tissue cells) and skeletal muscle cells.
Natural selection can change in a population in multiple ways.
1) natural selection can lower a population by death (an example would be a plague)
2) A population can adapt to the natural selection (an example would be anti bodies for the plague)
Hope this helps
Answer:
The ability to allow needed materials to enter and wastes to exit as well as the ability to block unneeded materials from entering the cell.
Explanation:
<em>A selectively permeable cell membrane only allows some things to go through it, therefore this answer choice is the correct one because it is explaining how it is selectively permeable.</em>
Answer:
C. +23.1 kJ/mol
Explanation:
the formula to use to calculate the energy requirement in kJ/mol to transport a proton across the mitochondrial inner membrane in plant cells is:
ΔGt = RTIn 
+ ZFΔV
let's list the values of the data we are being given in the question to make it easier when solving it.
Z= 1
F= 96500C (faraday's constant)
ΔV= 160mV = 0.160V
R= 8.314( constant)
T= 15ºC ( converting our degree Celsius into kelvin, we will have 273.15k+ 15 = 288.15K)
∴ T= 288.15K
Putting it all together in the formula, we have:
ΔGt = 8.314 × 288.15 × 2.303 log + 1 × 96500 × 0.160
ΔGt = 5517.25 
+15440
ΔGt = 5517.25 
+15440
Given that the pH differential gradient across the membrane is 1.4pH units. It implies that;
ΔGt = 5517.25 × 1.4 + 15440
= 7724.15 +15440
= 23164.15 Joules/moles
= +23.1 KJ/mole
Answer:
Shelter belts.
Explanation:
Trees are one of the important natural resources of the earth. Trees perform different important functions like purifying air, production of oxygen, reduction of the amount of carbon dioxide and consumptive use.
The shelter belts may be defined as the vegetative barriers producted by planting the trees in the specific rows. They are mainly designed to reduce the wind effect, its speed. The shelter belts also provide sheltered areas of the windward.
Thus, the answer is shelter belts.
