Kidney preserve or excrete H⁺ ion and HCO₃⁻ ion to regulate the blood pH.
Answer:
B - It hits an object
Explanation:
Once light has been produced, it will keep travelling in a straight line until it hits something else.
1) a five carbon ribose sugar
2) a phosphate molecule
3) one of four nitrogenous bases: adenine, guanine, cytosine or uracil
In traditional plant breeding, new varieties are developed either by selecting plants with desirable characteristics or by combining qualities from two closely related plants through selective breeding.
answer: a,
Channel proteins are a type of transport protein or permease that provides a tube like opening in the plasma membrane through which particles can diffuse through. This is primarily one distinction between the 2 mechanisms or processes of simple diffusion. Facilitated diffusion and simple or passive diffusion. The use of these specific proteins.
