I believe that secretion into the tubular fluid occurs when the principle cells in the Proximal convoluted tubule secrete H+ into the urine.
Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen; it is the opposite process of reabsorption. This secretion is caused mainly by active transport and passive diffusion.
The crust is the outermost layer of the Earth.
The lithosphere is not between itself and the outer core.
The inner core is the center of the Earth, which is located further in than the outer core.
The answer is the mesosphere.
B. Circular DNA
Good luck:)
Answer:
D. chromosomes of every cell.
Explanation:
Chromosomes are the main holding organelles that contain genetic information. All cells have a set of 46 chromosomes (that is depending on certain people). In these chromosomes, a certain number contains the genetic code for hair color. Therefore, we know that chromosomes are present in every cell and have genetic information about hair color and many other things.
Answer:
B
Explanation:
Hope this helps, oh and did i forget to tell you you got this?
