It is known as stimulus or the plural form stimuli. It can be external or internal.
Answer:
The correct option is c ( <span>sexual reproduction joins two cells that each have half the total chromosome number).
Reason:
Meiosis occurs only in reproductive cell in which the number of chromosome reduce to half. This phenomenon is very imoportant and essential for maintaining the number of chromosomes in species.</span><span />
Answer:
the answer is a I'm sure of it
Explanation:
d. The farther an electron is from the nucleus, the greater its energy.
Explanation:
The energy of an electron relates with the distance from the nucleus in that the farther an electron is from the nucleus, the greater its energy.
The nucleus of an atom is where the protons and neutrons are located.
Electrons orbits round the nucleus in certain permissible energy levels.
- According to quantum mechanics and the Bohr's model of the atom, the energy levels of orbital electron is quantized.
- The ground state is the state with the lowest energy and close to the nucleus.
- The outer most electrons are located in the highest energy levels
- Therefore, the farther an electrons is from the nucleus, the greater its energy
learn more:
Bohr's model of the atom brainly.com/question/2965079
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Answer:
The cells are connected by gap junctions.
Explanation:
A gathering of protein channels, which permits small molecules and ions to move between the neighboring cells is termed as a gap junction. The protein channels that form gap junctions comprise two connexons, of which one is situated in the membrane of one cell that combines and aligns with the connexon of the adjacent cell.
This association produces a spontaneous pathway, which permits the small molecules and ions to pass passively from one cell to another. The gap junctions are found in all the kinds of cells, however, they are not found in skeletal muscle, RBCs, and blood lymphocytes.
Thus, the passing of the fluorescent dye from one cell to another shows that the two cells are connected with the help of gap junctions.
