last year exam 1

last year exam 1 - Biology 150 Fall, 2008 First Exam Wilson...

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

View Full Document Right Arrow Icon
Biology 150 Fall, 2008 First Exam Wilson Form 1 Part I: Give the single BEST answer to each question (2.5 points each). Use the answer sheet to record your answer. 1. The most recent common ancestor of chimps and humans lived about how many years ago (it is the time that the Homo line split from other primates, not the time of the first Homo sapiens )? a. 6,000 b. 220,000 c. 6 x 10 6 d. 2 x 10 9 e. 3.5 x 10 9 2. An ion with a PLUS ONE charge has the following electronic structure: 1s 2 2s 2 2p 6 3s 2 3p 3 . It is an ion of: (REMINDER: there is a periodic table on the wall) a. phosphorus b. sulfur c. chlorine d. silicon e. oxygen 3. How many different versions (enantiomers) are there for: a. one (no enantiomers) b. two c. four d. eight e. none of the above 4. Consider a large deck of cards, each with a letter on one side and a number on the other. Given the hypothesis: ONLY IF “A” is on one side, THEN “4” is on the other . Turning over which of the following cards would be a GOOD test (think about “only if” and falsifiability)? a. a card with a “4” showing b. a card with an “A” showing c. a card with a “3” showing d. both a and b, above e. both b and c, above 5. Which of the following is NOT a possible stable molecule, given the rules of bond numbers for different kinds of atoms? 6. Which of the following shows a carboxyl (functional) group? 7. Dehydration, or condensation, synthesis involves: a. the splitting of a water molecule b. the formation of a water molecule c. breaking an amino acid from a polypeptide chain d. breaking a nucleotide from a nucleic acid chain e. both c and d, above 8. Which of the following is a nucleoside? a. a nitrogenous base b. a nitrogenous base plus a phosphate group c. a nitrogenous base plus a ribose sugar d. a ribose sugar plus a phosphate e. a phosphate group plus a ribose sugar plus a nitrogenous base
Background image of page 1

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

View Full DocumentRight Arrow Icon
9. The Hershey Chase experiment: a. showed that DNA was the genetic material b. identified the transforming factor that converted R to S cells c. used radioisotopes to identify a phage’s genetic material d. both a and b, above, are true e. both a and c, above, are true 10. In most organisms, is mRNA made from both of the DNA strands along most of the DNA? a. yes, because it is a more efficient way to use the information in DNA
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.

Page1 / 5

last year exam 1 - Biology 150 Fall, 2008 First Exam Wilson...

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