3. Eukaryotic cells and their organelles are disrupted (E) Outside the cell by s

Question

3. Eukaryotic cells and their organelles are disrupted (E) Outside the cell by sonication. A centriftuge is used to separate soluble and insoluble components. Protein X 7. A unique property of lysosomal proteins is is found in the insoluble fraction following that they (A) contain a stop-transfer sequence (B) operate only in an alkaline environment (C) are enclosed in clathrin-coated vesicles (D) are phosphorylated on mannose residues (E) are modified by O-linked glycosylation of centrifugation. The insoluble fraction is treated with 0.5 M NaCI and centrifugation is repeated. Protein X is now found in the soluble fraction. Protein X would be best described as (A) an integral plasma membrane (B) an integral membrane protein in an organelle (C) a peripheral membrane protein (D) a soluble cytoplasmic protein (E) a soluble nuclear protein asparagine residues 8. The beadlike unit of chromatin structure is the (A) chromatid (B) nucleosome (C) kinetochore (D) solenoid (E) scaffold 4. Which of the following macromolecules would yield only one type of monomer after complete hydrolysis? (A) DNA (B) Glycogen (C) Lipoprotein (D) RNA (E) Triacylglycerol 9. Inactivation of one X chromosome in female mammals is an example of which of the following phenomena? (A) Epigenetics (B) Sex-linked inheritance (C) Autosomal dominance (D) Translational control F Holandrie eontrnl first exon 16. Ribulose 1.5-bisphosphate carboxylase. which catalyzes the fixation of carbon dioxide during photosynthesis in plants and many algae, is located in which of the following cellular compartments? (A) Peroxisomes (B) Chloroplasts (C) Mitochondria (D) Lysosomes (E) Plant cell vacuoles 13. The migration of a protein on an SDS polyacrylamide gel is best described as inversely proportional to the (A) negative charge (B) isoelectric point (C) log of carbohydrate content (D) log of molecular weight (E) native volume

Explanation / Answer

Answer

3. Peripheral membrane protein

4. Glycogen - Alpha glucose molecules joined together to form glycogen

7. D.are phosphorylated on mannose residues

8. B nucleosome

9. A Epigenetics

13. D log of molecular weight

16. B Chloroplasts

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