BIO 170 - Second Exam - Fall 2016

Multiple Choice.

Place the letter of the choice that best answers the question on the line to the left.
Two Points Each. NOTE: “e” answers are never the correct answer.

_______ 1. Stripping the bark from a tree will eventually kill the roots because it has lost its

                    a. Rings         b. Support         c. Phloem        d. Xylem         e. Confidence, being naked and all

_______ 2. In the modern synthesis, evolution produces changes particularly within

                    a. Gene pools         b. Advantaged individuals        c. Populations         d. Communities
                                                    e. A tightly-observed marketing demographic

_______ 3. The vast majority of flowering plant species are

                    a. Asexual         b. Dioecious         c. Monoecious        d. Parasitic         e. Not all that pretty

_______ 4. Pasteurization is essentially a __________ technique

                    a. Purification         b. Nutrient-adjusting        c. Culturing         d. Sterilization
                                                        e. Fun-for-the-whole-family

_______5. The most effective stiffening in plants is done by

                    a. Central vacuoles and lignin         b. Root pressure and cellulose        c. Xylem and phloem
                    d. Chlorophyll and cellulose                 e. Well, we don’t want to get too pornographic here…

_______6. The Human Genome Project spurred the development of

                    a. New genetic therapy techniques                            b. An increased understanding of hybridization
                    c. Automation of the major laboratory processes        d. All of the above
                                                        e.  Genomes.  Human genomes.

_______7. In conifer trees, the female cones are typically

                    a. Lower         b. Smaller         c. Closer to the trunk        d. Wet
                                    e. Nothing I say won’t get me in trouble…

_______8. Cohn’s discovery of spore properties led to revisions of

                    a. Fern breeding         b. Fungus control        c. Germ theory         d. Sterilization techniques
                                                e. Too many spores! Too many spores!

_______9. Variation in algae color generally relates to

                    a. Mobility         b. Carotenoid content        c. Depth         d. Symbiont type
                                                e. The mood tone of their Instagrams

_______10. Antibiotics are generally

                    a. Made by the body as a defense        b. Made by competitor organisms        c. Developed from known toxins
                    d. A product of our microbiome                            e. Something I try not to think about

_______11. Watson and Crick discovered that the codon-based gene code worked on what ratio,
                                nucleotides to amino acids?

                    a. One to one         b. Two to one         c. Three to one        d. Four to one
                                         e. What are the odds of me knowing this-?

_______12. The names of the major fungal groups are based upon

                    a. Growth patterns         b. Ecological roles        c. Gender grouping         d. Spore-making structures
                                                                e. How funky they smell

_______13. The most important measure for a microscope is

                    a. Maximum magnification         b. Resolution        c. Reproducibility         d. Imaging limit
                                                            e. Can I do it on my phone?

_______14. Coccus, bacillus, spirillum are groups of

                    a. Fungi         b. Gametophytes         c. Pollen casings        d. Bacteria
                                            e. Isn’t that a law firm from tv?

_______15. The limiting force on root pressure is

                    a. Gravity         b. Transpiration        c. Diffusion         d. Air pressure
                                e. Roots have pressure? Are their jobs stressful?

_______16. What features probably had to come first for plants to particularly be able to evolve pollen?

                    a. Roots and leaves         b. Fruits and flowers        c. Spores and vascular systems
                    d. Roots and stems                e. They had to mentally ready for the challenge

_______17. Typically, when stomates are open

                    a. Carbon dioxide enters and water leaves            b. Water enters and carbon dioxide leaves
                    c. Both carbon dioxide and water enter                d. Both carbon dioxide and water leave
                                    e. It would help if I remembered what a stomate was…

_______18. An annual tree ring (that is, what you get over a year’s time) is

                    a. Just the good-growth cells                    b. Just the bad-growth cells
                    c. Could be either good-growth or bad growth, depending on conditions

                    d. Both good-growth cells and bad-growth cells
                                e. Just a polite way of saying the tree’s getting fat

Short Answer.

Pick NINE questions to answer in the spaces provided.

NOTE: if you answer MORE than nine, only the first nine will be corrected.
Four Points each. Partial credit is possible.

1. What are the two microscope systems based upon the interaction of the beam with the specimen?


2. Briefly explain how a bacterial culture gets purified to a culture with just one species in it.

3. Give two sets of differences between the chromosomes of -



4. Bioinformatics -
with -
Is very
because –

5. For sori -


6. Molecular clocks tend to be drawn from what particular type of DNA? (there are two, just give one)

What is the advantage of those types of DNA?

7. What part of the cell theory was “adjusted” during development of germ theory?

What early idea about germs, found to be untrue, led to that adjustment?

8. What are two general ecological roles played by fungi?


9. What are two different types of relationships that have led to significant coevolution between plant species and animal species?


10. When a new disease organism appears in a city, give one common adaptation that becomes more common in the populations of -

11. Briefly, how are bacteria made able to produce human proteins?

12. Briefly describe how hybrid vigor works.

11. A patient in a hospital is more likely to pick up a hard-to-treat infection.

14. What circumstances basically force a disease to become a childhood disease?

15. Give one reason why plants make starches that are, to humans -


16. When a seed germinates, briefly explain how the emerging -

Long Answer.

Select and answer completely any four of the following questions.
Note: if you answer more than four, only the first four will be corrected.
Seven Points Each. Partial credit is possible.
1.  At the points labeled with the stars, attach the appropriate labels from this list:
Violet.  X-Ray.  InfraRed.  Red.  Blue.  Ultraviolet.
           High Frequency           \                 Visible Range                  /             Low Frequency               
     *                                    *  /   *           *                                  *   \      *

2. Name and briefly describe the growth zones found in fungi.           



3.  What are the Koch Postulates for disease organisms?



4. For three nutritional (material, not energy) needs of plants, give the nutrient and the way the plant uses the nutrient.




5.  Other than the genders involved, give four sets of differences between -





6. Describe (don’t just name) three different isolation types that can lead to new species.



7. The Hardy-Weinberg rule states that the ratio of an allele in a gene pool will not change so long as certain conditions apply. Give four of those conditions.



8. Each major group of land plants demonstrates “new” features that helped make that group more successful than its predecessor. For each group, give one such feature.

Link to Answer Key

Answer as many or as few as you wish. You can't lose points on the rest of the exam by getting these wrong. Partial credit is possible.

Why was Rosalind Franklin probably not acknowledged for her role in genetics history? Two Points Each.

Since it came up again, why are most genetic diseases recessive? Three Points.

In DNA forensics testing, what does the “data” look like? Three Points.

What problem needed to be overcome to get really powerful magnifying lenses? Three Points.

What important insight came from observing goldfish tails? Three Points.

What disease might have come “the other way,” from North America to Europe? Three Points.

Which prokaryote group is most closely related to the eukaryotes? Three Points.

What structure appears to have never been given an official biology name? Three Points.

Why are today’s swamps never going to be future coal deposits? Three Points.

Why does it make sense that grass eaters are essentially color-blind? Three Points.

You put a nail into a tree, about an inch sticking out. What’s its location and condition when you come back in twenty years? Three Points.



BIO 170

Michael McDarby


Hit Counter