A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>
Answer:
A karyotype is an individual's collection of chromosomes.
Explanation:
Answer:
1. physical and chemical barriers
2.non-specific innate response
3. specific adaptive responses
Explanation:
If mitosis occurs correctly, the division of one cell by mitosis produces two cells.
