21. Which of the following are external regulators of the cell cycle? cyclins
b. growth factors
mitotic spindles
d. cancer cells

Select the correct answer.which scenario describes unethical lab behavior? o a. danny stores the chemicals required for his experiment in flasks and beakers.b.anna publishes the results of her experiment on the growth rate of saplings.c.jason repeatedly runs an experiment until he gets the results he desires.d. mia records her observations of an experiment precisely and accurately.

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center