final 2007 - Final Exam, BIO201B 1. Which of the following...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Final Exam, BIO201B form A Each question has only one right answer. Make sure to fill in your name and student number on the back of your answer sheet before you begin. 1. Which of the following is not seen at any time during meiotic prophase I? A. Leptotene chromosomes B. An intact nuclear envelope C. Synaptonemal complexes D. Chiasmata E. Amphitelic sister chromatids 2. The main purpose of receptor-mediated endocytosis is: A. To add plasma membrane during cell growth B. To make LDL (low density lipoproteins) C. To help make the VTC (vesicular tubular clusters) D. To aid in the transport of specific extracellular molecules into the cell E. To bring bacteria into the cell to be digested in autophagolysosomes 3. In the Meselson-Stahl experiments with bacterial DNA, could they tell the difference between semi-conservative and dispersive replication in the first round alone? A. Yes, because the bacterial DNA was circular, not linear B. No, because 15 N is not incorporated into DNA until the second round of replication in bacteria C. No, because just using one round of replication did not produce enough DNA to see in their assay. Two rounds were necessary to get enough DNA D. Yes, because the newly synthesized DNA had more 14 N in it E. No, because the bands from the density gradients looked the same after the first round of replication 4. In a cell fusion experiment (like the ones we talked about in class), how could you tell if soluble factors from an S-phase cell could stimulate a G1 phase cell to go into S- phase? A. The chromatin of the G1 cell would begin to condense B. The DNA of the S-phase cell would become pulverized C. The fused cell would become polyploid D. Replication in the S-phase cell would stop E The cell nucleus of the G1 phase cell would become radioactive if you added 3 H-thymidine 5. With BrdU labeled cells, the staining pattern of the mitotic chromosomes should be: A. One chromatid dark and the other light in the second generation B. Both chromatids dark in the first generation and both light in the second generation C. All chromatids light in the first generation D. All chromatids gray in the first generation then all chromatids light in the second generation E. All newly synthesized chromatids should be dark and the template chromatids should be light 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6. Movement of transition vesicles in the endomembrane system is: A. Unidirectional. They only move away from the RER, not towards it. B. Dependent upon a coat protein called VTC C. Used to get a KDEL receptor from RER to the plasma membrane D. A way to move soluble proteins but not integral membrane proteins E. A way for new lipids to be added to the plasma membrane so that the cell can grow in size 7. Most soluble enzymes in the lysomes should: A. Have had a signal sequence when they were nascent proteins being translated B. Be completely translated on free, soluble polysomes C. Have a stop-transfer sequence D. Be most active at high pH E. Have clathrin bound to them 8. The purpose of mannose-6-phosphate receptors in the golgi is to bind:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/30/2010 for the course BIO 201 taught by Professor Janicke during the Spring '08 term at SUNY Buffalo.

Page1 / 12

final 2007 - Final Exam, BIO201B 1. Which of the following...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online