BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 9, Problem 6A
The receptors for steroid hormones and peptide hormones are fundamentally different because
a. of the great difference in size of the molecule.
b. peptides are one of the four major
c. peptides are hydrophilic and steroids are hydrophobic.
d. peptides are hydrophobic and steroids are hydrophilic.
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Students have asked these similar questions
The amino acid that is INCORRECTLY described. * (Please choose one correct answer only)
A. Lysine: Polar basic: Calcium absorption
B. Proline: Nonpolar imino acid: Protein synthesis
C. Arginine: Polar positive: Nitric oxide sexual stimulation
D. Phenylalanine: Neutral polar: Neurotransmitter precursor
E. None of the given options
Which of the following statements about steroids is false?
a. They are classified as lipids because, like lipids, they are nonpolar
b.They can act as regulatory molecules in animals.
c.They are composed of four carbon rings.
d.They are highly soluble in water.
e.Their most abundant form is as sterols.
(I) Which one of the following is not a ligand
A.Glucagon
B. Bacterial protein
C. Air
(ii) Explain why by referring to each option
Chapter 9 Solutions
BIOLOGY
Ch. 9.1 - Prob. 1LOCh. 9.1 - Prob. 2LOCh. 9.2 - Prob. 1LOCh. 9.3 - Prob. 1LOCh. 9.3 - Prob. 2LOCh. 9.4 - Prob. 1LOCh. 9.4 - Describe how information crosses the membrane in...Ch. 9.4 - Prob. 3LOCh. 9.4 - Prob. 4LOCh. 9.5 - Prob. 1LO
Ch. 9.5 - Prob. 2LOCh. 9 - Paracrine signaling is characterized by ligands...Ch. 9 - Signal transduction pathways a. are necessary for...Ch. 9 - The function of a ____is to add phosphates to...Ch. 9 - Which of the following receptor types is NOT a...Ch. 9 - How does the function of an intracellular receptor...Ch. 9 - Signaling through receptor tyrosine kinases often...Ch. 9 - Prob. 7UCh. 9 - Which of the following best describes the...Ch. 9 - Prob. 1ACh. 9 - The ion Ca2+ can act as a second messenger because...Ch. 9 - Different receptors can have the same effect on a...Ch. 9 - In comparing small G proteins like Ras and GPCR...Ch. 9 - Prob. 5ACh. 9 - The receptors for steroid hormones and peptide...Ch. 9 - Describe the common features found in all examples...Ch. 9 - The sheet of cells that form the gut epithelium...
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- An allosteric interaction between a ligand and a protein is one in which: a. binding of a molecule to a binding site affects binding of additional molecules to the same site. b. binding of a molecule to a binding site affects binding properties of another site on the protein. c. binding of the ligand to the protein is covalent. d. multiple molecules of the same ligand can bind to the same binding site. e. two different ligands can bind to the same binding site.arrow_forwardWhich of these peptides contain an amino acid with a side chain IMIDAZOLE? А. Охуtocin B. Vasopressin Based on amino acid composition, what is the overall charge of vasopressin? A. Negative C. Hard to tell D. Either A or B C. Neutral B. Positive D. Either A or Barrow_forwardDefine the following terms: a. intrinsically disordered protein b. intrinsically disordered region c. prosthetic group d. apoprotein e. molecular chaperonearrow_forward
- The function of proteins is limited to one or two tasks. Proteins play multiple roles in living things. Match the functions of proteins to their corresponding descriptions. 1. signaling proteins 2. structural proteins 3. sensory proteins 4. regulatory proteins 5. motor proteins a. help cells move throughout the body b. turn genes on and off c. involved in cellular communication d. can detect light, heat, and sound e. proteins that help strengthen cells, tissues, and organsarrow_forwardWhich one of the following statements about the molecular structure of phosphatidylcholine is TRUE? a. It contains an isoprene chain. b. It contains a polar hydrophobic head group. c. It contains at least five alkene double bonds. d. It contains a phosphodiester bond. e. It contains a glycosidic linkage.arrow_forwardWhich of the following correctly does not correctly describe the composition of a phosphatidylethanolamine? OA. Glycerol residue B. Phosphate group O c. One fatty acid residue D. Ethanolamine residue O E. All of the abovearrow_forward
- Select the amino acids that are most likely to interact with water. SELECT ALL THAT APPLY A. Tyrosine B. Lysine C. Glutamine D. Glycinearrow_forwardInsulin is an example of a (an) Select one: a. storage protein b. enzyme c. hormone d. transport proteinarrow_forwardStretch of the stomach is an important cue for the regulation of food intake. The brain receives information about stomach stretch from: a. sensory receptors on the skin of the abdomen b. the hormone angiotensin c. visual feedback d. the vagus nerve Phenylethanolamine N-methyltransferase (PNMT) is an enzyme that converts norepinephrine into epinephrine. Which of the following would you expect after treatment with an inhibitor of PNMT? a. Cells that normally use dopamine as a neurotransmitter would now release epinephrine b. Cells that normally use epinephrine as a neurotransmitter would now release norepinephrine c. Cells that normally use epinephrine as a neurotransmitter would stop releasing neurotransmitterarrow_forward
- An example of a glycerophospholipid that is involved in cell signaling is: O A. ceramide O B. arachidonic acid. OC. Vitamin A (retinol) O D. phosphatidylinositol 4,5-bisphosphate O E. testosterone CS Scanned with CamScannerarrow_forwardMucopolysaccharides form the cementing substances between cells and tissue structures where they also act as shock absorbers. Why? A. Mucopolysaccharides have a structure that is made up of proteins and carbohydrates and can easily form a matrix that surrounds cells. B. Mucopolysaccharides have a negative charge that cushions against shock by having a matrix of repulsive molecules C. Mucopolysaccharides form flexible structures which can accommodate a large amount of water because the sugars are not covalently linked and forms a cushion surrounding cells. D. Mucopolysaccharides are natural adhesives. E. Mucopolysaccharides are large molecules.arrow_forwardTable 1. The most common endogenous opioid peptides produced in humans Рeptide Enkephalins Leu-enkephalin YGGFL Met-enkephalin YGGFM Metorphamide YGGFMRRV-NH2 Peptide E Peptide Sequence YGGFMRRVGRPEWWMDYQKRYGGFL Endorphins B-endorphin Y-endorphin a-endorphin YGGFMTSEKSQTPLVTLF KNAIIKNAYKKGE YGGFMTSEKSQTPLVTL YGGFMTSEKSQTPLVT Dynorphins Dynorphin A Dynorphin B Dynorphin1-8 YGGFLRRQ a-neoendorphin YGGFLRKYPK B-neoendorphin YGGFLRKYP YGGFLRRIRPKLKWDNQ YGGFLRRQFKWTarrow_forward
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