Question

1. if a hypothesis is rejected, what is a potential next step?

a. develop new hypotheses or modify the original one
b. assume the initial hypothesis was correct
c. write a research paper
d. stop the research entirely

1. what is the relationship between photosynthesis and cellular respiration?

a. cellular respiration stores energy, while photosynthesis releases it.
b. photosynthesis produces glucose and oxygen, which are used in cellular respiration to generate atp.
c. cellular respiration occurs only in plants, while photosynthesis occurs only in animals.
d. photosynthesis and cellular respiration are identical processes.

1. what role do spindle fibers play in mitosis?

a. they condense chromatin into chromosomes.
b. they regulate the movement of water into the cell.
c. they form the cell membrane.
d. they pull sister chromatids apart to opposite poles of the cell.

Explanation:

• For question 47, when a hypothesis is rejected, the scientific - method often involves developing new hypotheses or modifying the original one to continue research.
• For question 48, photosynthesis produces glucose and oxygen which are used as reactants in cellular respiration to generate ATP.
• For question 49, spindle fibers in mitosis pull sister chromatids apart to opposite poles of the cell.

Answer:

1. A. Develop new hypotheses or modify the original one
2. B. Photosynthesis produces glucose and oxygen, which are used in cellular respiration to generate ATP.
3. D. They pull sister chromatids apart to opposite poles of the cell.