Exam 3 Practice Exam

25 Questions

  1. ALL chordates have all of these characteristics at some point during their life cycle EXCEPT
  1. Post-anal tail
  2. Notochord
  3. Vertebrae
  4. Dorsal hollow nerve cord
  5. Pharyngeal gill slits
  1. If the hindbrain of a vertebrate became damaged it would harm its ability to ______.
  1. Eat
  2. Hear
  3. Smell
  4. Swim
  5. See

*forebrain = smell, midbrain = sight and hindbrain = hearing

  1. What feature in lungish and tetrapods represent a crucial link between them?
  1. They both hibernate when food is scarce
  2. The lungfish have skeletal and muscular structures that are similar to amphibian limbs
  3. They are both tied to water for reproduction
  4. They both exhibit bipedal posture
  1. True or False: once outside of Africa, humans interbred with Neanderthals.
  1. True
  2. False

*remember that humans are about 1.5% Neanderthal…crazy!

  1. How are more recently evolved hominin species different from the earlier ones?
  1. Larger teeth
  2. Larger braincase and body size
  3. Distributions limited to Africa
  4. No association with stone tools
  1. Are viruses cellular?
  1. Yes
  2. No

*no, they are not, and this is how we know they are nonliving.

  1. The evolution of diversity in flower size, structure, scent and color to attract pollinators describes which hypothesis?
  1. Directed – pollination hypothesis
  2. Insect pollination hypothesis
  3. Pretty flower hypothesis
  4. Colorful flower hypothesis
  1. In order to become stably incorporated into the human genome and inherited across generations, a viral gene must infect what type of cell?
  1. Neuron
  2. Lymphocyte
  3. Gamete
  4. Erythrocyte
  1. Virions are assembled during
  1. Lysogenic cycle only
  2. Lytic cycle only
  3. Both a and b

*lysogenic cycle suspends virion production

  1. A scientist develops a drug that slows the onset of symptoms of HIV. The HIV-infected cells are long polyproteins, so what is the scientist most likely using?
  1. Reverse transcriptase inhibitor
  2. Polymerase inhibitor
  3. Protease inhibitor
  4. CD4 inhibitor
  1. Some viruses have some of the genes required for protein synthesis. What hypothesis about the origin of viruses does this support?
  1. Degernation
  2. RNA world-origin hypothesis
  3. Transposable elements
  4. escaped-genes
  1. Viruses descended from the first, RNA-based life-forms on earth. What hypothesis about the origin of viruses does this support?
  1. Degernation
  2. RNA world-origin hypothesis
  3. Transposable elements
  4. Escaped-genes
  1. You see a flower that has branching veins in the leave and 8 petals. It is a
  1. Monocot
  2. Dicot
  1. What land plant species is currently radiating?
  1. Gymnosperms
  2. Angiosperms
  3. Mosses
  4. Ferns
  1. What is the female reproductive structure in the flower?
  1. Stamens
  2. Carpels
  3. Anther
  4. Ovary
  1. Echinoderms are
  1. Roundworms
  2. Sea stars
  3. Sponges
  4. Vertebrates
  1. Extending tube feet into water and using them to flick food particles to their cilia then sweep into their mouth. What kind of echinoderm feeding is this?
  1. Desposit feeding
  2. Suspension feeding
  3. Ampulla
  4. Podium
  1. What type of symmetry do echinoderms exhibit in the larva stage?
  1. Bilateral
  2. Radial

*radial in adults bilateral in larvae

  1. True or false: all chordates have vertebrae.
  1. True
  2. False
  1. What does the notochord induce by secreting enzymes?
  1. Somites
  2. Dorsal hollow nerve cord
  3. Pharyngeal gill slits
  4. Lung tissue
  1. What did the innovation of the bony endoskeleton promote?
  1. Better-developed young
  2. Tetrapods
  3. Rapid swimming
  4. Predation
  1. Egg laying animals are
  1. Viviparous
  2. Oviparous
  3. Ovoviviparous
  4. Viviviparous
  1. Which type of species has a placenta?
  1. Viviparous
  2. Oviparous
  3. Ovoviviparous
  4. Viviviprous
  1. All of the following are distinguishing characteristics of mammals EXCEPT
  1. Hair or fur
  2. Endothermy
  3. Ectothermy
  4. Mammary glands
  1. Great apes are also called
  1. Hominins
  2. Hominids

Studying tips: study this practice exam, the Jeopardy game, the Ultimate Study Guide and the PowerPoint slides and you’ll do GREAT! Also, don’t wait until the night before to study. There is too much information so you won’t be able to memorize it all in one night. GOOD LUCK and email me at if you have any additional questions.

Reminder: NO SESSION MONDAY.