UMUC BIO101 final exam 2017

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Social, Behavioral, Mathematical, and Natural Sciences


BIOL 101


COURSE NAME: Biology 101

SECTION NUMBER: 7985 (Fall 2016)

DUE DATE: The answer sheet for this exam MUST be submitted to the Assignment folder within 3 hours of downloading this exam. The final date for submission is 12/18/2016.SUBMIT ANSWER SHEETto Assignment Folder Final Exam


**Do not enter your answers here.** Type in the letter you select as the best answer on the Answer Sheet provided by your instructor.

Use the following information to answer questions 1 and 2 below. ***

Labrador Centronuclear Myopathy (CNM) is genetic disease in Labrador retrievers that results in insufficient muscle function, poor muscles tone, exercise intolerance, and awkward gait. CNM only develops in dogs that are homozygous recessive (pp) for the PTPLA gene. You are a dog breeder and there is one puppy in a new litter that has CNM. Neither of the puppy’s parents have CNM.

1. What are the parents’ genotypes for the gene responsible for CNM?

A) pp and pp

B) Pp and Pp

C) PP and PP

D) PP and Pp

Answer; Pp and Pp

2. Which of the following best describes the mother’s genotype?

A) Homozygous recessive

B) Heterozygous

C) Homozygous dominant

D) Heterozygous and Homozygous dominant

Answer; C) Homozygous Dominant

3. In biological systems most of the original energy from the sun is lost as?

A) Light

B) Kinetic energy of motion

C) Heat

D) Potential chemical energy

Answer; C) Heat

4. All of the following are common or recurrent themes in biology except?

A) Organisms grow, develop, and reproduce

B) Function determines structure

C) Matter is recycled while energy flows through living systems

D) Living organisms maintain homeostasis

E) Evolutionary processes explain both the unity and adaptive diversity of life

The correct answer is B) because structure determines function, therefore the statement is false.

5. In the following chemical reaction, what is carbon dioxide (CO2)?

Organic molecule + 6O2?6CO2 + 6H2O + energy

A) independent variable

B) product

C) substrate

D) enzyme

Answer; B) product

6. Which of the following is true regarding chemical bonds?

a) Chemical bonds are an unbreakable union of two atoms

b) Chemical bonds are an energetic interaction, or relationship, that occurs between two atoms

c) Chemical bonds are a physical linkage of two atoms

d) Chemical bonds are the result of energy emitted by radioactive atoms

Answer; Chemical bonds are an energetic interaction, or relationship, that occurs between two atoms

7. The genome of the bacterium, Helicobacter pylori, is composed of 19% guanine. Which of the following must also be true of its double stranded genome?

A) 19% cytosine

B) 62% adenine

C) 31% thymine

D) 19% uracil

Answer; A) 19% cytosine

8. You observe the following outside your window: A chipmunk is munching away on a bean plant in your garden when a black rat snake grabs and eats the chipmunk. What is the chipmunk in this situation?

A) predator

B) primary consumer

C) prey

D) secondary consumer

E) both B and C

Answer; primary consumer

9. You are observing and tracking the population of bobcats in a Pennsylvania state park. At the beginning of your study, there were 48 bobcats in the park. In one year, you counted 60 kittens born and noted the death of 15 bobcats. What is the per capita rate of change for this population of bobcats?

A) 0.3125

B) 1.25

C) 1.5626

D) 0.9375

Answer; 0.9375

10. The addition of the green fluorescent protein gene from a jellyfish to the genome of the zebra fish in order to produce a fluorescent green colored fish is an example of what?

a) genetic engineering

b) genetic drift

c) evolution

d) selective breeding

Answer; c) evolution

11. Cellular respiration occurs in which types of cells?

a) Bacterial

b) Animal

c) Plant

d) Protist

e) All of the above

Answer; d) Protist

12. Dr. Kitty Hauke is studying lobsters in Maine. She noticed that over several years the average length of pincers had increased within this population. She hypothesized that having larger pincers provided a fitness advantage. To test her hypothesis, she introduced 75 large pincer lobsters and 75 small pincer lobsters into an isolated bay area that was similar to the lobsters’ natural sea environment. Over 10 years, Dr. Hauke observed this isolated population of lobsters. What would she likely observe if her hypothesis was incorrect?

A) The percent of lobsters with large pincers would decrease.

B) There were fewer small pincer lobsters mating during mating season.

C) More large pincer lobsters could be found mating during mating season.

D) The percent of lobsters with large pincers would increase.

Answer; The percent of lobsters with large pincers would decrease

13. Microevolution is to population as macroevolution is to __________.

A) Individuals

B) Communities

C) Biodiversity

D) Species

Answer; Species

14. Active transport requires energy in order to move molecules ____________ the concentration gradient while simple and facilitated diffusion require no energy to move molecules __________ the concentration gradient.

A) Along ; against

B) Along ; along

C) Against ; along

D) Against ; against

Answer; Against ; along

15. Limiting factors:

A) Can be unpredictable natural events

B) Can be both biotic and abiotic

C) Can lead to unlimited population growth

D) A and B

E) A and C

F) B and C

G) All of the above

Answer; A and C

16. Cell is to ________ as gene is to heredity.

A) Organism

B) Organelle

C) Life

D) Biology

Answer; Organism

17. Allopatric speciation involves geography but _________________ speciation involves genetic change.

A) Sympatric

B) Parapatric

C) De novo

D) Peripatric

Answer; De novo

18. A common theme in biology is that energy flows through biological systems while matter __________.

A) Flows

B) Cycles

C) Multiplies

D) Stagnates

Answer; Stagnates

19. You have discovered a new substance that you suspect may be a living organism. All of the following are characteristics this substance would need in order to be classified as living EXCEPT:

A) Be made of organic molecules

B) Evolve

C) Grow, develop and reproduce with the help of DNA

D) Not contain carbon atoms

E) Use energy and raw materials to survive

Answer; Evolve

20. The following is a picture of a Tomato Hornworm, which is the caterpillar stage of the five-spotted hawkmoth (Manduca quinquemaculata). The white objects protruding from the caterpillar are wasp eggs. The wasps lay their eggs on the horn worms so that when the larvae hatch they can feed on the worm.

Which term best describes the relationship between the wasps and the Tomato hornworms?

A) Mutualism

B) Competition

C) Predation

D) Symbiosis

Answer; C) Predation

***Use the following to answer questions 21-24 below. ***

Consider the following hypothetical metabolic pathway (each letter after the word “Molecule” represents a group of atoms):

21. What is the reactant for this pathway?

A) Molecule C

B) Molecule COO

C) Molecule COOL

D) Enzyme 1

Answer; Molecule C

22. What is the intermediate for this pathway?

A) Molecule C

B) Molecule COO

C) Molecule COOL

D) Enzyme 1

Answer; Molecule COOL

23. Which of the following best describes this metabolic pathway?

A) The pathway is anabolic

B) The pathway is catabolic

Answer; The pathway is anabolic

24. All of the following would allow for more of the product of this metabolic pathway to be produced, EXCEPT?

A) Increasing the amount of Enzyme 2

B) Increasing the amount of Molecule C

C) Adding an activator for Enzyme 1

D) Adding an inhibitor for Enzyme 1

E) Removing an inhibitor of Enzyme 2

Answer; Adding an inhibitor for Enzyme 1

25. In Central Dogma: DNA is ________________ into RNA, and RNA is ______________ into proteins.

A) Translated ; transcribed

B) Replicated ; translated

C) Transcribed ; translated

D) Replicated ; transcribed

Answer; Transcribed ; translated

26. What is the genotype for the individual labeled “1” in the pedigree below? (Black circles or squares represent individuals born with a genetic disease such as cystic fibrosis)


B) Aa

C) aa

D) Either AA or Aa

Answer; C) aa

27. Which of the following is an example of sexual selection?

A) A diamondback rattlesnake with a color pattern that allows it to blend in better with the desert sand.

B) A farmer cross pollinating two zucchini plants.

C) Male blue-footed boobies dancing to show off their bright blue feet to female blue-footed boobies.

D) A scientist inserting an Escherichia coli gene into the genome of Staphylococcus aureus.

Answer; C) Male blue-footed boobies dancing to show off their bright blue feet to female blue-footed boobies.

28. Consider a rabbit, which of the following is true regarding its DNA?

A) All of its cells contain the same DNA.

B) Each cell type contains its own unique DNA.

C) Rabbit brain cells and kidney cells express the same DNA genes.

D) Rabbit DNA uses a different molecular backbone than mouse DNA.

Answer; A) All of its cells contain the same DNA.

29. Which of the following is the correct order of ecological organizational levels starting from the largest and most inclusive to the smallest and least inclusive?

A) Population > biosphere > community > individual > ecosystem

B) Community > individual > population > biosphere > ecosystem

C) Biosphere > ecosystem > community > population > individual

D) Individual > population > ecosystem > community >biosphere

Answer; C) Biosphere > ecosystem > community > population > individual

30. You are studying passive diffusion of a molecule called FLUBBER across a semipermeable membrane, which is mimicking the phospholipid bilayer of eukaryotic cells. FLUBBER moves from side A to B. Which of the following can you conclude?

A) Side A had a lower FLUBBER concentration initially compared to side B.

B) Side A had a higher FLUBBER concentration initially compared to side B.

C) Side A had the same initial FLUBBER concentrationas side B.

Answer; C) Side A had the same initial FLUBBER concentrationas side B.


Each question is worth 10 points.Total points for this section is 30 points.

Answer THREE out of the five questions listed below. Each answer should be between two paragraphs and half a page long. Answers will be graded for accuracy and completeness, as well as spelling and grammar.

**Do not enter your answers here** Type your answers into the Answer Sheet provided by your instructor.

1. At the beginning of the spring, Dr. Allan notices that there is an equal distribution of long and short stemmed buttercups in the vacant lot across the street from his house, which is never cut, as well as in his own backyard. By the end of the summer he notes that there are mostly long stemmed buttercups in the lot, but mostly short stemmed buttercups in his yard, which he regularly mows. These observations are examples of what biological principle? Develop a hypothesis to explain Dr. Allan’s observations.

Answer: Genetics-the long buttercups crossbreed with the short ones,but since the long ones are heterozygous dominant,they overpower the short ones

2.You are analyzing the ingredients in a new hot dog that is going to be put on the market soon.

A) Explain the biological function of these natural chemicals that you might find in a hot dog: protein, fat, carbohydrate, vitamins.


carbohydrates-provide energy for metabolism

Fat-act as insulator for the body organs

Protein-is the body building unit of the body.

Vitamins-protect the body against deceases.

B) Would it be healthier to eat a hot dog that contains mainly saturated fat, or one that contains mainly unsaturated fat? Explain your answer

Answer: B-unsaturated fat-saturated fats contains a lot of cholestrol which is unhealthy to the body.

 3. What are mutations? Describe how mutations contribute to variation within a population.

Answer; Mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light. It causes the species to become more adapted to their enemies or threats

   4. Discuss a specific example of how human activities can damage the environment, and explain how this damage could be reduced or eliminated.

Answer: Human activity such as industries and vehicles-They produces chemicals eg lead that corrodes the ozone layer leading to acid rain.This can be reduced by invention of solar power energy to run the factories.

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