Question:- what is the net charge of the structure in the figure below?
A. 1-
B. 1+
C. 2+
D. 2-
Answer
there are 3 protons (+ve charge) and 2 electrons (-ve charges )
so net charge is positive one
Active transport;
The movement of particles would be most affected by a disorder that causes damage to carrier proteins is the active transport.
Explanation;
Active transport involves the movement of materials against the concentration gradient.
This type of transport requires energy in form of ATP to aid the movement of particles from a lower concentration to a higher concentration.
Active transport requires carrier proteins such as the sodium-Potassium pump, to move materials in and out of the cell.
Answer:
Nitrogen fixation
Explanation:
Certain soil bacteria, e.g., <em>Azobacter spp</em> can combine free nitrogen of the atmosphere with oxygen to form nitrates. This is called <u>nitrogen fixation</u>. Other nitrogen-fixing bacteria such as Rhizobium form symbiotic unions with the roots of leguminous plants called root nodules. They fix nitrogen to form nitrates which are used up by the host plant. Nitrifying soil bacteria, e.g., <em>Nitrobacter </em>convert nitrites to nitrates in a process called <u>nitrification</u>.
Answer:
D, they are all the same size.
