Question

question 2
which of the following statements is not part of the cell theory?

a all cells arise spontaneously.
b all living things or organisms are made of cells.
c cell is the basic structural and functional unit of life.
d all cells arise from preexisting cells.

question 3
meiotic cell division has two steps, called meiosis i and meiosis ii.
which of the following is correct about each step?

a at the end of meiosis i one haploid cell has become two diploid cells, and at the end of meiosis ii two diploid cells have become four haploid cells
b at the end of meiosis i one diploid cell has remained one diploid cell, and at the end of meiosis ii one diploid cell has become two haploid cells
c at the end of meiosis i one haploid cell has remained one haploid cell, and at the end of meiosis ii one haploid cell have become two diploid cells
d at the end of meiosis i one diploid cell has become two haploid cells, and at the end of meiosis ii two haploid cells have become four haploid cells

Explanation:

• Question 2:
• The cell theory states that all living things are made of cells (option b), the cell is the basic unit of life (option c), and all cells come from pre - existing cells (option d). The idea that cells arise spontaneously (option a) is part of the discredited theory of spontaneous generation, not the cell theory.
• Question 3:
• Meiosis I starts with a diploid cell. Through meiosis I, the diploid cell divides into two haploid cells. Then, in meiosis II, each of those two haploid cells divides again, resulting in a total of four haploid cells.

Answer:

• Question 2: A. All cells arise spontaneously.
• Question 3: D. At the end of Meiosis I one diploid cell has become two haploid cells, and at the end of Meiosis II two haploid cells have become four haploid cells.