Answer:
unicellular; multicellular
Explanation:
<em>The smallest and the most basic unit of life is the cell. Living organisms that are made of just one cell are said to be </em><em>unicellular </em><em>while those that are made up of multiple cells are said to be </em><em>multicellular.</em><em> Many unicellular organisms are some of the smallest living organisms to exist in nature. They cannot be seen with the ordinary eyes, except with the aid of microscopes.</em>
The proteins, being made up a diverse set of amino acids, have, in addition to carbon, hydrogen, oxygen, and nitrogen, the elements sulfur and selenium. It is incredible the complex array of macromolecules that can be built starting with these simple elements.
Answer: Option (A) is the correct answer.
Explanation:
It is given that the unknown substance is solid at 15 degree celsius. When further heated then heat energy breaks the bond between molecules of the solid.
As a result, temperature remains constant until all the bonds are broken down to convert the solid into liquid.
Hence, the constant 17 degree celsius temperature shows that the solid is melting and after it completely melts then it converts into liquid at 23 degree celsius.
Thus, we can conclude that the statement its melting point is 17 °C, is correct about the unknown substance.
Answer:
The correct answer would be "T-lymphocytes would bind self-antigens".
Negative selection of T-lymphocytes takes place in the cortico-medullary junction in the thymus.
It removes T-lymphocytes which show high-affinity binding with self-antigen. Thus, it helps in introducing self-tolerance in T-lymphocytes.
In absence of negative selection, T-lymphocytes which show high-affinity binding for self-antigen would survive and develop into mature T-lymphocytes.
Consequently, T-lymphocytes would able to bind to self-antigens of the body which can result in autoimmune disease.
Explanation:
personal recount is a personal moment that you have experienced.
a factual recount is when it's a moment that the writer hasn't experienced but has seen or thinks it's interesting to write about.
