Why are the structural differences among amino-acid-derivative, polypeptide, and
ID: 96223 • Letter: W
Question
Why are the structural differences among amino-acid-derivative, polypeptide, and steroid hormones significant? A. Steroids are liquid soluble and cross plasma membranes readily B. Amino acid-derivative and polypeptide hormones are longer lived in the bloodstream and thus amplify signals more highly C. Polypeptide hormones are the most structurally complex and induce permanent changes in target cells D. Only polypeptide and steroid hormones bind to receptors in the plasma membrane. What is signal transduction A. The binding of a steroid hormone-receptor compels to DNA. B. The release of s hormone from the anterior pituitary in response to a hypothalamic hormone. C. The release of a hormone from the posterior pituitary in response to action potentials from the hypothalamus D. The production of a second chemical messenger inside a cell in response to the binding of a hormone at the cell surface. Which of the following developmental processes is not controlled by hormones? A. The initial development of male and female gonads, soon after fertilization B. Overall growth C. Malting in insects and other invertebrate animals D. Metamorphosis in insects and other invertebrate animals What is a humane-response element? A. A receptor for a steroid hormone. B. A receptor for a polypeptide hormone. C. A segment of DNA where a hormone-receptor complex binds D. An enzyme that is activated in response to hormone binding and produces a second messenger. In hormone systems, when does feedback inhibition occur? A. When the presence of a hormone inhibits its synthesis B. When the presence of a hormone stimulates its synthesis C. When the second messenger triggers the phosphorylation of an inhibitory protein D. When a hormone from the hypothalamus inhibits the release of a hormone form the anterior pituitary. The relationship between the insect hormones ecdysterone and hormone (PTTH) is an example of A. an interaction of the nervous and endocrine systems. B. homeostasis achieved by positive feedback. C. homeostasis maintained by antagonistic hormones. D. competitive inhibition of a hormone receptor Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal? A. greater production of T_3 than T_4 B. hyposecretion of TSH. C. Hypersecretion of MSH D. a decrease in the thyroid secretion of calcitonin. Which hormone is incorrectly paired with its action? A. oxytocin-stimulates uterine contractions during B. ACTH- stimulates release of glucocorticoids by adrenal cortex. C. thryoxine - inhibits metabolic processes D. melatonin- affects biological rhythms and seasonal reproduction. Steroid and amino-acid-derivative hormones typically have in common A. their solubility in cell membranes B. their requirement to travel through the bloodstream C the location of their receptors. D. their reliance on signal transduction in the cell.Explanation / Answer
82) A.Steroids are lipid soluble and readily cross plasma membranes, while polypeptide and most amino acid-derived hormones cannot.
83) D.Signal transduction is communication inside and between cells, which includes: signal transduction pathways, local communication between and within cells, and hormonal signaling.
84) A. The initial development of male and female gonads, soon after fertilization, these developmental processes is not controlled by hormones.
85) C.The hormone response element is located on the segment of DNA. The hormone response element is located on the cell DNA and represents the site for a hormone to bind.
86) A. In hormone systems, feedback inhibition occurs when the presence of a hormone inhibits release of the hormone.
87) A.The relationship between the insect hormones ecdysteroid and PTTH is an example of an interaction of the endocrine and nervous systems.
88) B. Hyposecretion of TSH is the most likely explanation for hypothyroidism in a patient whose iodine level is normal.
89) All are correct.
90) B. Steroid and peptide hormones typically have in common their requirement for travel through the bloodstream.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.