BIO 170 - Second Exam - Spring 2016

Links go to pertinent passages of book.

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.  Production of human proteins involves the usage of

                    a. Animal models         b. Mutations         c. Plasmids        d. Spore forms         e. Some nasty slimy stuff

_______  2.  “Sugar water” moves down in a plant in the

                    a. Pollen tube         b. Phloem         c.Xylem        d. Central stem         e. Elevator

_______ 3.  Evolution technically changes

                    a. Trait types         b. Gene pools         c. Individuals        d. Reproduction types
                                                        e. Who gets the best seats

_______ 4.  Osmosis / diffusion is the main driving force of

                    a. Photosynthesis         b. Drying         c. Root pressure         d. Growth
                                            e. That movie they made us watch

_______ 5.  An archegonium is a type of

                    a. Bacterial spore         b. Gametophyte        c. Lichen structure         d. Extremophile

                                                e. Word someone makes up just to be mean

_______ 6.  The major weakness of Lister’s carbolic acid treatments was

                    a. It didn’t affect enough prokaryotes                    b. It couldn’t last long enough
                    c. Prokaryotes developed resistance                      d. It was toxic to eukaryotes
                                    e. He couldn’t make enough money with them

_______ 7.  The “ticks” of a molecular clock are

                    a. Radiation decay units         b. Point mutations        c. New species         d. Extinct species
                                                    e. No one wants a clock with ticks on it

_______ 8.  A central vacuole is used for

                    a. Water control         b. Carbon dioxide storage        c. Reproduction         d. Stiffness
                                                                    e. Sucking up middles

_______ 9.  Sectioning involves

                    a. Cell chambers         b. Cell walls         c. Thin slicing        d. DNA distribution
                                                        e. Our brains falling to pieces

_______ 10. Plants capture light for photosynthesis using

                    a. Carotenoids         b. Cellulose         c. Nitrates        d. Algenoids         e. Light sabers

_______ 11. The most common culture media for bacteria are based on

                    a. Gelatin         b. Saline         c. Cellulose        d. Straw infusions         e. Red Bull

_______ 12. Bioinformatics requires a particular “new” specialty in

                    a. Topology         b. Experimental analysis        c. Social media         d. Computer science

                                        e. Sounds very “government surveillancey” to me…

_______ 13. A seed begins as

                    a. A pollen grain         b. An ovary        c. A pollen tube         d. A modified root
                                                e. Something small that gets bigger

_______ 14. If individuals in a species are both male and female, the species is

                    a. Monoecious         b. Asexual         c. Monocots        d. Sporophytic         e. Soon to be news items

_______ 15. Modern land plants probably could not have made that first move out of the water without

                    a. Pollen         b. Fungus symbionts         c. Woody stems        d. Pollinators         e. A forwarding address

_______16. Antibodies are

                    a. Prokaryote-killing chemicals         b. A type of virus        c. A delayed host reaction
                    d. An asexual cell type                                e. A pretty unfriendly term

_______17. The feature of a microscope that most closely matches ability to focus:

                    a. Resolution         b. Total magnification        c. Lens clarity         d. Net magnification
                                        e. Focusing ability? Why couldn’t it be focusing ability?

_______18. Meiosis is a process

                    a. To get diploids from haploids            b. To merge haploids into diploids

                    c. To get haploids from diploids            d. All of these
                                    e. I didn’t know I was supposed to remember

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 two different Hardy-Weinberg requirements that apply to the population as a whole?


2.  Looking at a pine tree from a distance, what are two features each to distinguish -



3.  The evolution of pollen likely involved the integration of what two pre-existing abilities?


4.  What is the founder effect?

5. What structure will help tell a true fern apart from other ferny-looking plants, and where on the plant is that structure found?


6a. Why do leaves have pores?

6b. Why is it good to be able to close those pores?

7.  Epigenetics is largely Lamarckian – explain why.

8.  Give the term that goes with two of the main bacterial shapes, and describe (or draw) the basic shape that goes with it.

9.  What is the basic purpose of a fruit?

10. Pasteur learned a lot about prokaryotes working for what (non-dairy) industry?

11. Give one explanation each for symptoms which are -

12. Briefly explain how a vaccine works on the molecular level.

13. When an angiosperm germinates, briefly explain how -
The stem
grows up?
The root

14. What is niche isolation?

15. Many antibiotics are extracted from fungi. Why do the fungi make them?

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


17. What are two areas of plant biology heavily influenced by plant-animal coevolution?


18. Explain what produces a tree ring pattern.

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.  What are the Koch Postulates for disease organisms?



2.  Microscopes can be split into two main groups based upon either listed feature. For each feature, name the groups.
Nature of the
Imaging Beam
Interaction of Beam
with specimen

3. Give the fern life cycle. Include the terms for the stages, the reproduction types, and the reproductive cells involved.

4. Give four sets of differences -





5.  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               
     *                                    *  /   *           *                                  *   \      *

6.  Fill in 4 steps, in order (they don’t have to be all of the steps) -
A disease organism that can live and spread in humans infects an individual -

The disease is particularly adapted to human children.

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





8.  Give four rules from the Cell Theory.



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 are DNA tests using evidence from old cases likely to be unreliable? Three Points.

What is genetically odd about pet store hamsters? Three Points.

What did Malpighi discover looking at goldfish tails under a microscope? Three Points.

Why does pasteurized milk still spoil? Three Points.

Last year’s outbreak of Ebola virus produced a much lower mortality rate than earlier outbreaks, probably connected to location. How? Three Points.

Why are gram-positive bacteria more likely to infect people in a hospital? Three Points.

What minerals are particularly found in photosynthetic molecules? Three Points Each.

Explain why some salt-water aquarium fish are not “really” brightly-colored. Three Points.

Why is the sky blue? Three Points.

What two types of organisms make up a lichen? Three Points.

What does "-phyte" mean? Three Points.

What does “rhiz-“ mean? Three Points.

A green flower with no odor – what does that tell you about its reproduction pattern? Three Points.


BIO 170

Michael McDarby


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