Question

question 7 1 pts when the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis? prophase anaphase metaphase telophase question 8 1 pts extensive weight training causes the muscle cells to: atrophy. hypertrophy. undergo hyperplasia. undergo anaplasia. question 9 1 pts which is true about the sodium and potassium pump? two sodium ions are taken into the cell. three sodium ions are taken out of the cell. three potassium ions are taken into the cell. two potassium ions are taken out of the cell.

Explanation:

• Question 7: In mitosis, during metaphase, chromosomes align at the equator of the spindle fibers.
• Question 8: Extensive weight - training leads to muscle cell hypertrophy, an increase in cell size.
• Question 9: The sodium - potassium pump takes three sodium ions out of the cell and two potassium ions into the cell.

Answer:

• Question 7: C. Metaphase
• Question 8: B. hypertrophy
• Question 9: B. Three sodium ions are taken out of the cell