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Which of the following statements describes integral membrane proteins? A) They do not completely span the lipid bilayer. B) They are easily removed by changes in pH or high C) The amino acids that are embedded in the membrane are D) They tend to be water-soluble

Which of the following molecule(s) is NOT involved in active transport? A) Glucose B) Sodium C) Chloride D) Carbon dioxide

Steroid hormones are steroids that: Have specific high affinity receptors Travel in the blood stream from endocrine glands to distant locations Affect gene transcription by direct DNA binding A) I only B) II only C) I and II only D) All three of them

Out of the following, cholesterol does not serve as a precursor for which compounds? A)   Vitamin D B) sex hormones C) Bile salts D) Bile pigments

Find the correct statement about phosphodiester linkage between adjacent nucleotides in nucleic acids A) 3’-phosphate of one nucleotide joins the 3’-hydroxyl of the next nucleotide B) 3’-phosphate of one nucleotide joins the 5’-hydroxyl of the next nucleotide C) 5’-phosphate of one nucleotide joins the 5’-hydroxyl of the next nucleotide D) 5’-phosphate of one nucleotide joins the 3’-hydroxyl of the next nucleotide

Which of these statements best describes anomers? A) Compounds that have two or more chiral carbons B) Diastereomers that differ in structure at just one of their chiral carbons C ) Cyclic monosaccharides that differ only in the arrangement of groups around the anomeric carbon D) Isomers whose structures are mirror images of one another  

Which one of the following statements is true about GLUT transporters? A) GLUT, transport glycerides via facilitated diffusion across the cell plasma membrane B) GLUT2 is the major glucose transporter in brain, placenta and erythrocytes C) GLUT1 is found in the pancreas, liver and kidneys. D) GLUT4 exists in skeletal muscle cells, adipocytes, and cardiomyocytes

Endogenously synthesized triacylglycerols are transported from the liver to the extrahepatic tissues by which of the following lipoproteins? A) Chylomicrons B) VLDL C) LDL D) HDL

Two monosaccharides combine to form a disaccharide by removing…? A) One molecule of oxygen B) One molecule of waterC) One molecule of carbon D) One molecule of hydrogen

In the following epinephrine pathway, which component is the second messenger? Epinephrine → G protein-coupled receptor → G protein → adenylyl cyclase → cAMP → protein kinase A A) G-protein B) cAMP C) GTP D) Adenyl cyclase