You are watching: In their mechanism of action, a difference between lipid-soluble and water-soluble hormones is that
False; Lipid-insoluble hormone cannot overcome the plasma membrane and also get right into the cell, for this reason they have to bind to receptors on the cabinet surface and also transduce your signals v signal transduction pathways.
Which that the following statements around lipid-soluble hormone is true? They plot by producing 2nd messengers. They tie to receptor on the plasma membrane. They action by affecting the warrior of genes. They bind to DNA as quickly as they enter a cell.
Which of the complying with is a structure that allows hormone-receptor complexes to tie to particular DNA sequences? Enhancer. Promoter. Zinc finger. Hormone-response element (HRE).
Zinc finger; A zinc finger is a distinctive DNA-binding domain on some hormone receptors the is exposed once hormone-receptor complexes space formed.
It binds to and also activates protein kinase A, which then phosphorylates various other enzymes; cAMP binds to and activates protein kinase A, which climate phosphorylates various other enzymes in the signal transduction pathway.
True or false? because that a signal transduction pathway to it is in activated, hormones must be present in the bloodstream at very high concentrations.
False; only low concentration of hormone are required in the bloodstream to activate a signal transduction pathway, which works by producing 2nd messengers within the cell that amplify the hormonal signal.
Which of these is a nonsteroid hormone? estrogen testosterone both estrogen and also testosterone oxytocin epinephrine and oxytocin
nonsteroid hormones act via signal transduction pathways; steroid hormones do not plot via signal transduction pathways
Which of this extracellular signal molecules could diffuse through a plasma membrane and also bind come an intracellular receptor? estrogen epinephrine cellulose oxytocin starch
each set of target cells has various receptor-transduction mechanisms; Look at the epinephrine example in your text. The hormone can create different responses in different target cells. Epinephrine can create vasodilation responses (blood vessels in bones muscles supplied for fight-or-flight) and also vasoconstriction responses (gut vasculature) in one emergency that evokes its secretion.
high levels of ecdysteroids and reduced levels of youth hormone; The ecdysteroids are produced by the prothoracic gland and also the youth hormone is secreted by the corpora allata.
In their mechanism of action, a difference in between lipid-soluble and also water-soluble hormones is that _____.
lipid-soluble hormones tie to an intracellular receptor and also this hormone-receptor facility binds to DNA; many water-soluble signals bind to plasma membrane proteins, initiating signal-transduction pathways. In contrast, the lipid-soluble hormones enter target cells and also bind through intracellular receptors; the hormone-receptor complexes action as warrior factors, thus altering gene expression.
Oxytocin secretion and also milk release from the mammary glands of lactating woman mammals are initiated through _____.
the physics sensation of the baby sucking at the nipple; The milk-release an answer system was offered as an instance of a neuroendocrine pathway with confident feedback causing milk relax from the nursing mommy to the suck baby. The "neuro" component includes the baby"s activation that the mother"s mechanoreceptor neurons in the breast.
releases one hormone that reduces glucose levels in the blood and also another that increases them; The counter-regulatory hormones and also their actions space insulin, which decreases glucose levels in the blood, and glucagon, which rises glucose levels in the blood.
This disorder frequently arises before puberty and is typically treated by injections of the hormone lacking from the affected individual"s bloodstream.
Type i diabetes mellitus; type I diabetes mellitus is additionally known as childhood-onset diabetes. Hypoactivity the the pancreas" secretion of insulin disturbs the homeostasis of glucose level in the blood, and also these space corrected through administering injections the insulin.
True or false? The homeostatic system for blood calcium concentration is preserved by the hormones calcitonin and also parathyroid hormone.
Which of the complying with statements around the pituitary gland is false? it produces hormone that regulate the term cycle. The posterior part is an expansion of the hypothalamus. The anterior pituitary is connected to the hypothalamus through blood ship Neurosecretory cells create hormones that are stored in the anterior pituitary.
Neurosecretory cells develop hormones that space stored in the anterior pituitary; This statement is false; neurosecretory cells produce hormones that space stored in the posterior pituitary.
True or false? The kidnize is responsible for creating hormones that preserve the homeostatic level of glucose in the blood.
True; The kidneys produces 2 hormones, insulin and also glucagon, which work together to preserve the homeostatic levels of glucose in the blood.
The hypothalamus directs the anterior pituitary to develop hormones the then stimulate or inhibit the manufacturing of these hormones; The hypothalamus directs the anterior pituitary to produce hormones the regulate other hormones in a variety of endocrine organs, consisting of the thyroid gland and ovaries.
Aldosterone created by the adrenal glands controls the reabsorption that sodium ion by the kidneys; The adrenal glands sit atop the kidneys and also secrete a range of hormones, including aldosterone, which controls the reabsorption of sodium ion by the kidneys.
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Gigantism, a condition characterized by exceptionally rapid growth, is sometimes caused by a tumor the induces the gland in i m sorry it establishes to overproduce a certain hormone. Wherein would such a tumor be intended to grow?
Which of this glands secretes release hormones? hypothalamus adrenal cortex thymus ovaries testes
Which of this hormones are responsible because that the "fight or flight" an answer to danger? insulin and glucagon thyroxine and also calcitonin androgens and estrogens antidiuretic hormone (ADH) and also oxytocin epinephrine and also norepinephrine
Glucocorticoids; in solution to stress, ACTH stimulates the adrenal cortex come secrete glucocorticoids.
Calcitonin; Parathyroid hormone rises blood calcium levels; calcitonin lowers blood calcium levels