From the Final Exam

The following questions give you an opportunity to see some of what students deal with today. See how you would fair in class today. If you're stumped you will find the answers at the bottom of the page.

From Paul Bartell’s Introduction to Avian Biology (AN SC 211) class:
1. What form of nitrogenous waste do birds excrete?

From Heather Karsten’s Principles and Practices of Organic Agriculture (AGECO 144) class:
2. Organic certification standards do not permit raw manure applications to crops, with the exception of which of the following conditions:
(a) the crop will be consumed by livestock and not humans
(b) manure is incorporated into the soil a minimum of 60 days before harvest of a crop that will be consumed by humans
(c) the manure has a C/N ratio of 90
(d) the manure was produced by organically certified livestock

From Robin Brandt’s Landscape Soil and Water Management (ASM217) class: 3. True or False: An elevation change of 10 feet in an irrigation pipe system is equivalent to a pressure change of 4.33 psi.

From Majid Foolad’s Plant Breeding (HORT 407) class:
4. List and briefly describe the two types of polyploids.

From Adam Glick’s Introduction to Molecular Pharmacology (VB SC 330) class:
5. Acyclovir is effective against HSV for the following reason:
(a) Acyclovir is readily phosphorylated by cellular enzymes so that it can be used by the viral DNA polymerase.
(b) It blocks viral uncoating in the cytoplasm of the cell.
(c) HSV encodes the enzyme thymidine kinase, which phosphorylates acyclovir and allows it to be used by the viral DNA polymerase.
(d) It can be directly incorporated into viral DNA without further modification.
(e) It prevents shedding of new virus.

From Dennis Decoteau’s Environmental Effects on Horticultural Crops (HORT 315) class:
6. Match the following:
__ Gravitropism __ Orthograviotropic __ Diagraviotropic __ Plagiograviotropic
a. is vertically directed plant growth
b. refers to the growth movements of plants toward (positive) or away from (negative) the Earth’s gravitational pull
c. is growth at angles other than horizontal or vertical
d. is horizontally directed growth




Exam Answers

1. Birds turn nitrogenous wastes into uric acid rather than urea, which mammals produce. Uric acid is excreted as the thick, white substance familiar in bird droppings. In mammals, urine consists of urea dissolved in water.

2. a

3. True

4a. Autopolyploids: Polyploids with multiple copies of genome from the same species—for example, autotetraploid AAAA.
4b. Allopolyploids: Polyploids with copies of genome from different species—for example, allotetraploid AABB.

5. c

6. b, a, d, c