Parathyroid hormone (PTH) is responsible for increasing blood calcium levels by promoting calcium release from bones and increasing calcium absorption in the intestines.

Abscisic acid is involved in the regulation of stomatal closure during water stress to prevent water loss.

Progesterone is a hormone that plays a key role in regulating the menstrual cycle and maintaining pregnancy.

Abscisic acid plays a key role in closing stomata during water stress, thus regulating water loss.

Antidiuretic hormone (ADH), also known as vasopressin, plays a key role in regulating water balance by promoting water reabsorption in the kidneys.

Abscisic acid plays a crucial role in regulating water loss by causing stomatal closure during water stress.

Abscisic acid plays a crucial role in helping plants respond to drought stress by closing stomata.

Auxins are known to promote cell elongation by loosening the cell walls, allowing cells to expand.

Estrogen plays a crucial role in regulating the menstrual cycle, along with progesterone.

Epinephrine (adrenaline) is the primary hormone responsible for the fight-or-flight response, preparing the body for quick action.

Adrenaline (epinephrine) is the hormone that prepares the body for a 'fight or flight' response during stressful situations.

Testosterone is the hormone responsible for the development of secondary sexual characteristics in males, such as increased muscle mass and body hair.

Thyroxine (T4) is a hormone produced by the thyroid gland that plays a crucial role in regulating metabolism and energy levels.

Epinephrine, also known as adrenaline, is secreted by the adrenal medulla and is involved in the body's fight-or-flight response.

Insulin is secreted by the pancreas and is responsible for lowering blood glucose levels by facilitating glucose uptake by cells.

Insulin is secreted by the pancreas and plays a crucial role in lowering blood sugar levels by facilitating glucose uptake by cells.

Insulin is the hormone secreted by the pancreas that helps regulate blood glucose levels.

Angiotensin II is a potent vasoconstrictor that plays a key role in regulating blood pressure.

Erythropoietin is a hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow.

Antidiuretic hormone (ADH) regulates the reabsorption of water in the kidneys, reducing urine output.

Melatonin is a hormone produced by the pineal gland that regulates the sleep-wake cycle, promoting sleep.

Luteinizing hormone (LH) triggers ovulation, leading to the release of a mature egg from the ovary.

Oxytocin is the hormone that triggers the onset of labor by stimulating uterine contractions.

Butane has the highest boiling point among the given hydrocarbons due to its larger molecular size.

Butane is commonly used as a fuel in lighters.

Sodium ions (Na+) rush into the neuron during depolarization, causing the membrane potential to become more positive.

Sodium ions (Na+) rush into the neuron during depolarization, causing the membrane potential to become more positive.

Deuterium is the isotope of hydrogen with one neutron, also referred to as Hydrogen-2.

The kingdom Monera includes unicellular and prokaryotic organisms.

The kingdom Plantae is characterized by multicellular and autotrophic organisms.