Which statement is NOT true about non-steroid (peptide) hormones? A) They are derived from peptides, proteins, polypeptides, and derivatives of amino acids. B) They bind to receptors on the cell surface. C) They form cyclic AMP inside the cell. D) They create an enzyme cascade effect. E) They enter the cell in order to have an effect.

Which statement is NOT true about non-steroid (peptide) hormones?
A) They are derived from peptides, proteins, polypeptides, and derivatives of amino acids. B) They bind to receptors on the cell surface.
C) They form cyclic AMP inside the cell.
D) They create an enzyme cascade effect.
E) They enter the cell in order to have an effect.
by

1 Answer

Answer :

E) They enter the cell in order to have an effect.
by

Related questions

Which statement about hormone types is correct? A) Non-steroid hormones activate an enzyme cascade. B) Steroid hormones regulate the production of a particular protein. C) Non-steroid hormones are either amino acids, peptides, or proteins. D) Steroid hormones all have four carbon rings with different side chains. E) All of the choices are correct.

Description : Which statement about hormone types is correct? A) Non-steroid hormones activate an enzyme cascade. B) Steroid hormones regulate the production of a particular protein. C) Non-steroid hormones are ... all have four carbon rings with different side chains. E) All of the choices are correct.

Last Answer : E) All of the choices are correct.

Which statement is NOT true about steroid hormones? A) They include hormones such as estrogen. B) They do not bind to cell surface receptors. C) The hormone-receptor complex can enter the nucleus. D) The hormone-receptor complex can bind to chromatin. E) Steroid hormones act faster than non-steroid (peptide) hormones.

Description : Which statement is NOT true about steroid hormones? A) They include hormones such as estrogen. B) They do not bind to cell surface receptors. C) The hormone-receptor complex can enter the ... complex can bind to chromatin. E) Steroid hormones act faster than non-steroid (peptide) hormones.

Last Answer : E) Steroid hormones act faster than non-steroid (peptide) hormones.

Which is associated with a steroid hormone? A) cyclic AMP B) the second messenger system C) production of new proteins D) activation of proteins present in an inactive form E) binding of a protein to a surface receptor on the plasma membrane

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Last Answer : C) production of new proteins

All the following statements about steroid hormones are true except (A) They are hydrophobic (B) They require carriers to transport them in circulation (C) Their receptors are intracellular (D) They require cyclic AMP as second messenger

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Last Answer : Answer : D

Which of the following is NOT true about hormones? A) Hormones are secreted into the bloodstream. B) Hormones are released from exocrine glands. C) Hormones may be classified as peptides or steroids. D) Hormones usually affect a target organ. E) Cells that react to a hormone have specific receptors for that hormone.

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Last Answer : B) Hormones are released from exocrine glands.

Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the cytoplasm. C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

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The following are true about parathyroid hormone a. it is an 84 amino acid peptide hormone b. it increases calcium absorption from the gastrointestinal tract c. it acts on a cell surface receptor that increases intracellular cyclic AMP d. all above

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Last Answer : all above

Which of the following is NOT correct about hormones? A) Hormones are generally found across the animal kingdom. B) Hormones may be used at a distance from where the hormone is made. C) Hormones have a slower effect than that mediated by the nervous system. D) Hormones bind to receptor sites at a target cell. E) Hormones are directed to the target organ and avoid contact with non-target cells.

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Last Answer : E) Hormones are directed to the target organ and avoid contact with non-target cells.

Hormone receptors possess all the following properties except (A) All of them are proteins (B) They possess a recognition domain (C) They bind hormones with a high degree of specificity (D) Number of receptors in a target cell is constant

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cell receptors (or TCR) on CD4+ T cells A-recognize peptides not associated with MHC molecules B- recognize peptides associated with MHC class I moleculesC- recognize peptides associated with MHC class II molecules D- are secreted out into the environment to bind antigens

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Last Answer : recognize peptides associated with MHC class II molecules

What is the cascade of events that follows a stress or trauma to produce adrenal reaction? A) hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)-adrenal cortex mineralocorticoids and glucocorticoids (regulate metabolism and sugar level) B) hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)-adrenal cortex epinephrine and norepinephrine (regulate metabolism and sugar level) C) anterior pituitary (ACTH)-hypothalamus (ACTH-releasing hormone)-adrenal cortex hormones D) adrenal cortex (hormones)-anterior pituitary (ACTH)-hypothalamus (ACTH-releasing hormone) E) adrenal cortex (hormones)-hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)

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Last Answer : A) hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)-adrenal cortex mineralocorticoids and glucocorticoids (regulate metabolism and sugar level)

Most hormone receptors are localized on the cell membrane and transduce hormone binding into altered levels of intracellular messengers. A limited number of intracellular receptors do exist. Which of the following statement(s) is/are true concerning intracellular receptors? a. The messengers or hormones must by lipophilic b. These intracellular receptors generally regulate protein synthesis c. The intracellular receptors are located entirely in the nucleus of the cell d. A heat-shock protein serves as an inhibitor protein blocking the DNA-binding domain of the steroid receptor

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Hormones are composed from many classes of molecules. As far as our present knowledge extends, hormones are NOT found in which of the following categories of substances: a) proteins b) peptides c) nucleic acids d) steroids

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How does steroid hormone influence the cellular activities? (a) Using aquaporin channels ‘as second messenger’ (b) Changing the permeability of the cell membrane (c) Binding to DNA and forming a gene-hormone complex (d) Activating cyclic AMP located on the cell membrane

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Estrogen and testosterone are steroid hormones, and most likely bind to

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All the following statements about TSH are true except (A) It is a tropic hormone (B) It acts on para-follicular cells of thyroid glands (C) Its receptors are membrane-bound (D) Its second messenger is cyclic AMP

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The following are true about the thyroid hormone a. iodide ions enter the follicle cells by passive diffusion b .T4 and T3 bind to the receptors in nuclei c. thyroxine, once synthesized, is coupled to thyroglobulin until released d. a greater proportion of tri-iodothyronine is formed when iodine is deficient

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Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins

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With regard to membrane receptors for hormones: a. they are often glycoproteins b. they are important for hormones made up of steroid c. those for insulin exhibit an intrinsic protein kinase activity d. glucagon uses calcium as a second messenger

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What is the peptide bond that connects amino acids in proteins? -Biology

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Which of the following is the “quaternary structure” of proteins concerned with? (a) sequence of amino acids in the peptide chain (b) description of the way the peptide chains are arranged with respect to each other (c) location of the disulfide bridges in the peptide chain (d) conformation of the protein backbone

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Which of the following is the first step in the determination of the primary structure of proteins? (a) determining the number and kind of amino acids in the peptide (b) reducing the disulfide bridges in the protein (c) protecting the N-terminal of the peptide (d) protecting the C-terminal of the peptide

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The enzyme trypsin is specific for peptide bonds of (A) Basic amino acids (B) Acidic amino acids (C) Aromatic amino acids (D) Next to small amino acid residues

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ADP ribosylation is the mode of action of (A) Cholera toxin (B) Acetyl choline (C) Muscerinic receptors (D) Cyclic AMP

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Which of the following statement(s) is/are true concerning translation of the mRNA message to protein synthesis? a. An adaptor molecule, tRNA, recognizes specific nucleic acid bases and unites them with specific amino acids b. Covalent attachment of tRNA to amino acids is energy dependent c. The formation of a peptide bond between the growing peptide chain and the free amino acid occurs in the free cytoplasm d. Complete protein synthesis takes hours

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Which of the following converts peptones, proteoses and polypeptides into amino acids : (a) Amylase (b) Trypsin (c) Lipase (d) Rennin

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The major role of minor elements inside living organisms is to act as (a) co-factors of enzymes (b) building blocks of important amino acids (c) constituent of hormones (d) binder of cell structure.

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Which of the following statement(s) is/are true concerning cellular ion channels? a. Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane b. Ion channels are formed by membrane-spanning peptides that are arranged so that polar moieties line a central core c. Ion channel proteins undergo conformational changes between open states and closed states d. Ion channels can be blocked

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Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?(a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

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81. Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus) (1) Cortisol, testosterone (2) Insulin, glucagon (3) Thyroxin, Insulin (4) Somatostatin, oxytocin

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A pheromone is A) an endorphin released within the anterior pituitary. B) a growth factor related to the production of tumors. C) a product of a neurosecretory cell that acts on neighboring cells. D) a chemical released by one animal to affect the behavior of another animal. E) a regulatory hormone that stimulates or inhibits the release of hormones produced by other endocrine glands.

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All of the following subserve as intracellular second messengers in receptor mediated signal transduction except: A. Cyclic AMP B. Inositol trisphosphate C. Diacyl glycerols D. G proteins

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All of the following subserve as intracellular second messengers in receptor mediated signal transduction except: A. Cyclic AMP B. Inositol trisphosphate C. Diacyl glycerols D. G proteins

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Last Answer : D. G proteins

The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes and inhibit bacterial protein synthesis (c) They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes ... peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : Ans: B

The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes and inhibit bacterial protein synthesis C. They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis