BIO188 Midterm 3 Sample Exam 2 S10

BIO188 Midterm 3 Sample Exam 2 S10 - BIO188 Midterm 3...

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

View Full Document Right Arrow Icon
1 BIO188 Midterm 3 – Version B Spring, 2009 This exam contains 45 questions on 8 pages. Each question has the same value. Fill in your name, subject, today’s date and indicate that you have version “B” on your Scantron sheet before you begin. Read each question carefully, think before you answer and mark the letter corresponding to the SINGLE most correct answer on the scantron sheet. Use a No. 2 pencil only. Make dark marks. Erase any changes completely or fill in a new scantron sheet. Put your name on the question sheet and return it at the end of the exam. 1. A new DNA strand elongates only in the 5' to 3' direction because A. DNA polymerase begins adding nucleotides at the 5' end of the template. B. Okazaki fragments prevent elongation in the 3' to 5' direction. C. the polarity of the DNA molecule prevents addition of nucleotides at the 3' end. D. replication must progress toward the replication fork. E. DNA polymerase can only add nucleotides to the free 3' end. 2. Which of the following is a function that is performed by cell division? A. Reproduction B. Repair C. Growth D. Metabolism E. A, B and C 3. Which of the following describes cell communication systems? A. All cells can respond to all signals B. In response to a signal, the cell may alter activities by changes in cytosol activity or in transcription of RNA. C. Communicating cells are usually close together. D. Most signal receptors are bound to the outer membrane of the nuclear envelope. E. Lipid phosphorylation is a major mechanism of signal transduction. 4. The centromere is a region in which A. chromatids remain attached to one another until anaphase. B. metaphase chromosomes become aligned at the metaphase plate. C. chromosomes are grouped during telophase. D. the nucleus is located prior to mitosis. E. new spindle microtubules form at either end. 5. Asexual reproduction results in identical offspring unless which of the following occurs? A. Natural selection B. Cloning C. Crossing over D. Mutation E. Environmental change
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 6. In the digestive tract adjacent cells develop connections to form a sheet that prevents leakage of small molecules. These connections between cells are called: A. Communication junctions B. Gap junctions C. Tight junctions D. Anchoring junctions E. Ion gates 7. What does transformation involve in bacteria? A. the creation of a strand of DNA from an RNA molecule B. the creation of a strand of RNA from a DNA molecule C. the infection of cells by a phage DNA molecule D. the type of semiconservative replication shown by DNA E. assimilation of external DNA into a cell 8. In animals, meiosis results in gametes, and fertilization results in A. zygotes. B. spores.
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 05/18/2010 for the course BIO 188 taught by Professor Capco during the Spring '08 term at ASU.

Page1 / 8

BIO188 Midterm 3 Sample Exam 2 S10 - BIO188 Midterm 3...

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