BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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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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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.
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.
Which 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 B
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_forwardSelect 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_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_forwardWhich of the followings statements is false considering the properties of alkaloids: Select one: a. Some alkaloids are colored, like berberine (orange) and sanguinarine (yellow) b. Caffeine, cocaine, codeine and nicotine are water soluble, whereas others, including morphine and yohimbine are highly water soluble c. Most alkaloids contain oxygen in their molecular structure; those compounds are usually colorless crystals at ambient conditions d. Many alkaloids dissolve poorly in water but readily dissolve in organic solvents, such as diethyl ether, chloroform or 1,2-dichloroethane e. Most alkaloids have a bitter taste or are poisonous when ingestedarrow_forward
- Classify each of the following amino acid as polar or nonpolar. If polar, indicate if the R group is neutral, acidic, it basic. Indicate if each is hydrophobic or hydrophilic. a. lysine b. arginine c. methionine d. tyrosinearrow_forwardWhich of the following combination is are non-essential amino acids? A. Leucine and Isoleucine B. Isoleucine and Methionine C. Methionine and Asparagine D. Proline and Alaninearrow_forwardIdentify which of the following pairs of amino acid residues can have hydrogen bonding between their side chains. A. Alaine and Glycine B. Leucine and Isoleucine C. Valinc and Asparaginc D. Threonine and Tryrosinearrow_forward
- Define the following terms: a. respiratory control b. glycerol-3-phosphate shuttle c. uncoupling protein d. oligomycin e. malate–aspartatearrow_forwardWhich of the following is true about the phosphorylation of proteins? A. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains. B. Phosphorylation of proteins is catalyzed by phosphatases. C. Phosphoryation always activates enzymes. D. The specificity in phosphorylation is conferred solely by the amino acid to be phosphorylated.arrow_forwardThe function of cholesterol in a cell membrane is to A.maintain structure because of its flat rigid characteristics. B.take part in the reactions that produce bile acids. C.attract hydrophobic molecules to form solid deposits. D.act as a precursor to steroid hormones. E.none of the abovearrow_forward
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