Q: All chemical reactions require activation energy to get started, and activation energy is required to overcome the energy barrier. Given these facts, overcoming the energy barrier starts a what among the following options: - chemical reaction - contraction - Movement of an air mass - expansion - metabolic reaction - energy storage - increased body strength - oxidation reaction
A: chemical reaction

Q: Roots grow in length and width from primary and secondary meristem, and most plants have roots . Given these facts, what can have a primary and secondary meristem among the following options: - birds - plants - Flowers - cacti - fish - grass - phytoplankton - potatoes
A: plants

Q: Hormones control many cell activities, so they are very important for homeostasis, and homeostasis is the chemical equilibrium of the body. Given these facts, what control many cell activities and are very important for the chemical equilibrium of the body among the following options: - organs - Energy - critical organs - sweating - Organic compounds - pancreas - hydration - the hormones
A: the hormones

Q: Cell division is how organisms grow and repair themselves, and mitosis is cell division. Given these facts, what is how organisms grow and repair themselves among the following options: - exercise - cell wall - glucose - diploid - complex - haploid - mitosis - Cooking
A: mitosis