1. The law of conservation of mass applies to this reaction because when you look at its balanced chemical equation, the same amount or ratio of elements can be found:
C + O2 --> CO2
This shows that the product will have the same ratio of reactants.
2. The original piece of wood and resulting ashes do not weight the same because the combustible parts of the wood were burned and converted to gases. This means that the missing mass is equal to the gases produced. The remaining ashes are the incombustible parts of the wood.
Answer:
Option C, open chemically gated sodium ion channels.
Explanation:
The nicotinic receptors are present on the muscle cell membrane. These receptors belong to the class of cholinergic receptor which binds to the acetylcholine and opens the gated channel to allow transfusion of cation through it. These actions of the receptors are stimulated by the neurotransmitter. Nicotinic receptors are very fast at acting and hence are more prevalent at the neuromuscular junction.
Hence, option C is correct
It is C, thick fur i’m pretty sure bc it keeps them warm
Answer: The options were missing, but the endocrine organs that secret each gland are:
Pituitary gland: Thyroid-stimulating hormone
Pituitary gland: Adrenocorticotropic
Hypothalamus: Gonadotropic
Pituitary gland: Prolactin
Pituitary gland: Growth hormone
Thyroid gland: Thyroxine
Thyroid gland: Calcitonin
Thyroid gland: Triiodothyronine
Hypothalamus: Antidiuretic
Hypothalamus: Oxytocin
Adrenal gland: Glucocorticoids
Adrenal gland: Mineralocorticoids
Adrenal gland: Epinephrine
Pineal gland: Melatonin
Thymus gland: Thymosins
Pancreas: Insulin
Pancreas: Glucagon
Explanation:
- The pituitary gland, also known as the hypophysis, produces the thyroid-stimulating hormone, the adrenocorticotropic, prolactin, and growth hormone. The hypophysis has two parts, the anterior one and the posterior one. The anterior one secretes these hormones thanks to the action of hormones that comes from the hypothalamus.
- The hypothalamus, which is a gland that is in the brain, produces:
gonadotropic, antidiuretic, and oxytocin. Once produced, they are stored and secreted by hypophysis. In this case, these hormones are in the other portion of the hypophysis, the posterior part. The hormones act in the reproductive system.
- The thyroid gland, which is in the neck, produce and secretes:
thyroxine, calcitonin, and triiodothyronine. The calcitonin controls calcium concentration, while the thyroxine and triiodothyronine impact the cells' metabolism.
- The adrenal gland is above the kidneys. It secretes Glucocorticoids, Epinephrine, and Mineralocorticoids. The mineralocorticoids regulate the concentrations of water and salt in our body; glucocorticoids have many functions, one is fighting inflammation; lastly, epinephrine, also known as adrenaline, is released in a fight or flight reaction.
- The pancreas is an organ and a gland. As a gland, it secretes glucagon and insulin to regulate the concentration of glucose in the blood.
- The pineal gland is on the brain. This gland secretes melatonin, which is a hormone that helps us to sleep.
- The thymus gland is in the chest, and it produces a hormone called thymosin. This hormone helps in the production of leucocytes, which the thymus produces.
Cells are usually what teachers teach as the “building blocks” of life.
hope that helps :)
