Answer:
D. Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons
Explanation:
In an atom, number of electrons is equal to the number of protons. And the number of neutrons is equal to the difference between the mass number of the atom and the atomic number. For Nitrogen 14, electron is 7, proton is also 7 as number of electrons and number of protons are equal. So, the neutron will be 14-7= 7. For Nitrogen 15, electron number is 7 so proton number will be also 7. Neutron number for nitrogen 15 will be 15-7= 8. That's why the answer is option number 4.
A. Cohesion is a property of water that describes the attraction due to hydrogen bonding between water molecules.
Science provides only a limited understanding of the supernatural, or other ways of knowing, such as art, philosophy, or religion is a true statement.
<h3>Why science provide limited information about supernatural?</h3>
Science provides only a limited understanding about supernatural, aesthetic, or other ways of knowing, such as art, philosophy, or religion because they are not proved by the science through experiments. These things are beyond from explaining them. Science can't explain the happening of supernatural phenomenon. Science does not create moral or ethical rules, laws, or judgements. Science deals with only things that can be observed or measured so that's why science is not understanding supernatural things.
So we can conclude that Science provides only a limited understanding of the supernatural, or other ways of knowing, such as art, philosophy, or religion is a true statement.
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Answer:
b. They are produced by memory B cells
Explanation:
The rapid cell division in activated B cells is followed by the differentiation of daughter cells into the plasma cells. The plasma cells are the precursor for antibodies and memory B cells. The antibodies kill the antigens while memory B cells are long-lived cells.
Hence, antibodies are not produced by memory B cells but by plasma cells.