Question number 2 the dna the answer is number 4 the last one
Answer:
Prediction is correct.
Explanation:
In the body, transportation of molecules can occur in different ways or mechanism.
An example is by facilitated diffusion.
It is a passive form of transport where carrier proteins shuttle the molecule such as glucose into the cell without using energy.
Glucose being a large molecule is shuttled by glucose carriers across the cell membrane into the cell by facilitated diffusion.
Therefore an increase in the number of glucose carrier means an increase in the rate of glucose transport.
The results will show our prediction was correct.
D
Because most air pollution is caused by the burning of fossil fuels burned in the home
The blood cells likely placed in a "hypotonic solution".
<u>Option: A</u>
<u>Explanation:</u>
When human blood cells are immersed in a solution with a low concentration of solute than is present in cells, osmosis allows water to pass through the cells, allowing the cells to get swollen; such a fluid is hypotonic to the cells. But when held in a solution with a greater concentration of solute, osmosis allows water to pass out of the cell, the cell is smaller and crenated in form; then a solution is hypertonic to the cells.
Healthcare facilities preserve human blood cells in a plasma solution that has the proper salt and protein ratios. Such solution is formulated to be mildly hypertonic to the red cells, thus maintaining the integrity of the cells and avoiding hemolysis.
Its A. it prevents sperm from reaching the egg and fertilizing it.
