Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.
Answer:
Recombinant DNA
Explanation:
Recombinant DNA can be used to change the genetic makeup of a cell, as in adding a gene to make a bacterial cell produce insulin.
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.
D is what he probably thought but it all depends on genetics so if they did stretch out the kid would still have a short neck to it would be A
Permanent tissue is composed of cells that have lost the ability to divide and has attained a definite shape or form.
There are three main types of permanent tissue. 1) simple, 2)complex, 3) special tissues.
