91. Steroids with 17 beta ketone attached to methyl hydroxyl (COCH2OH) group are: A. Progesterone and...
91. Steroids with 17 beta ketone attached to methyl hydroxyl
(COCH2OH) group are:
A. Progesterone and estrone
B. Norethindrone and ethinylestradiol
C. Aldosterone and cortisol
D. Estradiol and testosterone
Homework Answers
91.D.estradiol and testosterone are the 17 beta ketone attached to methyl hydroxyl.estradiol are the principle hormone which control both men and women sexual activity.thus,they are attached to 17 ketone carbon group
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91. Steroids with 17 beta ketone attached to methyl hydroxyl
(COCH2OH) group are:
A. Progesterone and...
Question 11 of 17 SU The molecule below is a metabolic precursor of both testosterone and...
Question 11 of 17 SU The molecule below is a metabolic precursor of both testosterone and estrone. What functional group(s) are present? CH3 A) Ketone CH B) Aldehyde H HERRI C) Ether Il D) Ester E) Ether and ester
Tor F 1. With the exception of steroids, all lipids contain at least one fatty acid. 2. Some lipids contain monosaccharides as part of their structure. 3. Some lipids contain an amino acid as part of...
Tor F 1. With the exception of steroids, all lipids contain at least one fatty acid. 2. Some lipids contain monosaccharides as part of their structure. 3. Some lipids contain an amino acid as part of their structure. 4. Glycerophospholipids contain a phosphate portion in their structure. 5. All lipids have a molecule of glycerin as their backbone. 6. Polyunsaturated fatty acids have more than one C-C double bond in their "backbone." 7. Fatty acids are soluble in water. 8....
13) In the compound below, the hydroxyl group not contained in the carboxyl group is in...
13) In the compound below, the hydroxyl group not contained in the carboxyl group is in which position? 13) LD CH3-CH2-CH-C-OH ОН A) 1 B) 2 C) 3 H D)4 DIE E) 5 14) What is the IUPAC name for this compound? DEDI OH in A) 24-dimethylpentanoic acid B) 3-methylhexanoic acid C) heptanoic acid D) pentanoic acid E) 3,4-dimethylpentanoic acid 15) A carboxylic acid is prepared from an aldehyde by A) reduction B) oxidation C) hydrolysis. D) neutralization, E) hydrogenation....
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of...
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of substances into and out of the cell catalysis (enzymatic activity) acting as a receptor c. d. 22. In the fluid mosaic model of membrane structure the proteins are specifically bonded to the lipids b. a. the proteins "float" in the lipid bilayer the proteins are sandwiched between the lipid molecules c. d. the lipids are sandwiched between the protein molecules 23. All steroids contain...
12. The glycolipid molecule is characterized by having a specific residue attached to the backbone. Which...
12. The glycolipid molecule is characterized by having a specific residue attached to the backbone. Which is that residue? 1. a) phosphate 2.b) glycerol 3. c) lipid 4.d) sugar 13. The steroid that is the raw material for the production of other steroids is 1. a) triglyceride. 2. b) cholesterol. 3. c) progesterone. 4. d) eicosanoid. 14. Which compounds are responsible for causing pain and inflammation 1. a) anabolic steroids 2. b) adrenocorticoids 3. c) prostaglandins 4. d) leukotrienes 7...
Which of the following is not true of DNA methylation? A.The methyl group is attached via...
Which of the following is not true of DNA methylation? A.The methyl group is attached via a strong carbon-carbon bond B.It is heritable across cell division C. t is considered stable enough to mediate X-inactivation D. It interferes with cytosine-guanine binding
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid,...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid, two phosphate groups and an aminoalcohol B) Glycerol, two fatty acids, one phosphate group, and an aminoalcohol C) Sphingosine, two fatty acid, one phosphate group and an aminoalcohol D) Glycerol, three fatty acids, and a phosphate group 13. When ribose adopts the most stable cyclic structure hemiacetal, which of the following is happening? A. it becomes a furonose C. an acetal is formed B....
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated far...
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated farty acids Membeane proteins can be located a. entirely within the membrane b on the surface of the membeane c. in either position d. the position cannot be determined 20. 21. Which property has not been observed for membrane proseins? a energy storage b. transport of substances into...
Answer the following questions using these molecules: diethyl ether, chloroacetone, methyl ethyl ketone, xylene, 2-butene, 2,2-dimethyl...
Answer the following questions using these molecules: diethyl ether, chloroacetone, methyl ethyl ketone, xylene, 2-butene, 2,2-dimethyl propane, acetic acid a) Which compounds would show only singlets in the proton spectrum, in the region of chemical shift less than/equal to 6? b) Which methyl group among all the compounds will give a proton signal at highest field? c) Which compound(s) will give a proton shift at lowest field? d) Which compound(s) will give a carbon signal at lowest field? e) Which...
9. The carbohydrate group of the protein represented by 4DUR is A. covalently attached to Thr...
9. The carbohydrate group of the protein represented by 4DUR is A. covalently attached to Thr 346 B. covalently attached to Ser 332 C. covalently attached to Thr 373 D. noncovalently attached Chapter 11: Bioinformatics Exercise 11.3 10. In the structure represented by 4DUR, the oligosaccharide is attached to the protein by__ _ through its atom. A. N-linkage; C2 B. N-linkage: anomeric carbon C. O-linkage; anomeric carbon D. O linkage; C2 Chapter 11: Bioinformatics Exercise 11.3 5. For 1HPN, starting...
Question 11 of 17 SU The molecule below is a metabolic precursor of both testosterone and estrone. What functional group(s) are present? CH3 A) Ketone CH B) Aldehyde H HERRI C) Ether Il D) Ester E) Ether and ester
Tor F 1. With the exception of steroids, all lipids contain at least one fatty acid. 2. Some lipids contain monosaccharides as part of their structure. 3. Some lipids contain an amino acid as part of their structure. 4. Glycerophospholipids contain a phosphate portion in their structure. 5. All lipids have a molecule of glycerin as their backbone. 6. Polyunsaturated fatty acids have more than one C-C double bond in their "backbone." 7. Fatty acids are soluble in water. 8....
13) In the compound below, the hydroxyl group not contained in the carboxyl group is in which position? 13) LD CH3-CH2-CH-C-OH ОН A) 1 B) 2 C) 3 H D)4 DIE E) 5 14) What is the IUPAC name for this compound? DEDI OH in A) 24-dimethylpentanoic acid B) 3-methylhexanoic acid C) heptanoic acid D) pentanoic acid E) 3,4-dimethylpentanoic acid 15) A carboxylic acid is prepared from an aldehyde by A) reduction B) oxidation C) hydrolysis. D) neutralization, E) hydrogenation....
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of substances into and out of the cell catalysis (enzymatic activity) acting as a receptor c. d. 22. In the fluid mosaic model of membrane structure the proteins are specifically bonded to the lipids b. a. the proteins "float" in the lipid bilayer the proteins are sandwiched between the lipid molecules c. d. the lipids are sandwiched between the protein molecules 23. All steroids contain...
12. The glycolipid molecule is characterized by having a specific residue attached to the backbone. Which is that residue? 1. a) phosphate 2.b) glycerol 3. c) lipid 4.d) sugar 13. The steroid that is the raw material for the production of other steroids is 1. a) triglyceride. 2. b) cholesterol. 3. c) progesterone. 4. d) eicosanoid. 14. Which compounds are responsible for causing pain and inflammation 1. a) anabolic steroids 2. b) adrenocorticoids 3. c) prostaglandins 4. d) leukotrienes 7...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid, two phosphate groups and an aminoalcohol B) Glycerol, two fatty acids, one phosphate group, and an aminoalcohol C) Sphingosine, two fatty acid, one phosphate group and an aminoalcohol D) Glycerol, three fatty acids, and a phosphate group 13. When ribose adopts the most stable cyclic structure hemiacetal, which of the following is happening? A. it becomes a furonose C. an acetal is formed B....
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated farty acids Membeane proteins can be located a. entirely within the membrane b on the surface of the membeane c. in either position d. the position cannot be determined 20. 21. Which property has not been observed for membrane proseins? a energy storage b. transport of substances into...
9. The carbohydrate group of the protein represented by 4DUR is A. covalently attached to Thr 346 B. covalently attached to Ser 332 C. covalently attached to Thr 373 D. noncovalently attached Chapter 11: Bioinformatics Exercise 11.3 10. In the structure represented by 4DUR, the oligosaccharide is attached to the protein by__ _ through its atom. A. N-linkage; C2 B. N-linkage: anomeric carbon C. O-linkage; anomeric carbon D. O linkage; C2 Chapter 11: Bioinformatics Exercise 11.3 5. For 1HPN, starting...
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