BIOL 1902 Lecture Notes - Ruffed Grouse, Spruce Grouse, Dentin

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goldeel903

20 Jul 2012

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Bugs have probing mouthparts called stylets: sap (in phloem tissues) Plant tissues are hard to eat: tough structural components. Slugs and snails break off plant tissues with a radula. Caterpillars have mandibles: scoops up plant materials. Behind -> dentine softer at back of incisors. Moose have only a lower set of incisors: large cheek teeth grind up the food. Ruffed grouse eat a lot of buds. Digestion: slugs and snails produce digestive enzymes. Get help from bacteria living in their rumen. Hares, rabbits and beavers have intestinal pouches called caeca (singular = caecum) Porcupines do not eat droppings: digestive tract is 26% of total weight. Bird eats the pulp or flesh and pass out the seeds. Finches eat seeds evening gross beaks eat seeds: bill size and shape reflects diet. Grosbeaks have massive conical bills for crushing and slicing: american goldfinches have small, fine bills = thistle seed. Small for small seed, big for big seed (?)

Related Questions

1. What features of rats make them good experimental models tolearn about factors that affect humans?
2. What external features of rats are common to all mammals?
3. Give 2 examples of how mammals are diverse externalcharacteristics.
4. Why do feet, pals, ears of rats not have hair?
5. What is the function of the pelage other than insulation?
6. Can you suggest a function for vibrissae?
7. How lon are the vibrissae in relation to the head and width ofthe body?
8. How to upper incisors mesh with the lower incisors?
9. Are any teeth other than incisors present?
10. Why is the mouth of a rat referred to as subterminal?
11. How does the position of the eyes of a rats head differ fromthat on a humans head?
12. What is the function of the large pinna in rats?
13. Are teats exclusively mammalian structures? Why do you thinkso?
14. What term similar to quadruped describes animals such as humanswith two leg?
15. What digitigrade animals do you racall?
16. Are humans plantigrade or digitigrade?
17. How does contraction of muscles passing under the zygomaticarch move the manduble in rats?
18. What are the relative sizes of the braincases in humans andrats(measure circumference)?
19. What does the similarity between the skeletal system of ratsand humans suggest about the ancestry of these two mammals?

skytortoise329

1. Which organ is responsible for balancing the amount ofglucose floating around in the blood? (it stores excess glucosewhen there is too much and releases glucose into the bloodstreamwhen there isn't enough)

Select one:

a. liver

b. pancreas

c. spleen

d. stomach

2. The gastrointstinal tract has 4 basic layers. Which layer isthe one that comes in contact with the food that you eat?

Select one:

a. serosa

b. submucosa

c. muscularis

d. mucosa

3. Which digestive organ contains 3 layers of muscle tissue inthe muscularis?

Select one:

a. esophagus

b. large intestine

c. stomach

d. anus

The esophagus is the first organ in the digestive tract thatsecretes digestive enzymes to begin the chemical (molecular)breakdown of food.

Select one:

True

False

Gastric ulcers are often caused by bacterial infection.

Select one:

True

False

Lactose intolerance causes gas, bloating and stomach achesbecause undigested sugar molecules, called lactose, end up gettingdigested by bacteria in the intestines. When they digest it, theyproduce lots of gases.

Select one:

True

False

7. The lower esophageal sphincter prevents food in the stomachfrom backing up into the esophagus.

Since the esophagus is not equipped to handle the harsh acids inthe stomach, when food (mixed with stomach acids) does back up intothe esophagus, you get symptoms such as heart burn. This is calledgastroesophageal reflux (or "reflux").

When reflux is left untreated for many years, the person becomesa trisk for esophageal cancer. This is because the esophagus gets"burned" by the acids over and over again which can eventuallytrigger the development of cancerous cells.

Select one:

True

False

Peristalsis is defined as the rhythmic contractions of thedigestive system that pushes food along the digestive tract.

Select one:

True

False

tealgoat796

Directions: Write out your answers in the word document and then copy and paste everything into the text box. If you do not include the question along with your answer, you will be marked down.

1. What would happen if you put pGLO directly onto an agar plate and you checked on it after letting it incubate?

a. It would glow

b. It would grow

c. Nothing

d. E.Coli would grow

2. Explain in a short sentence or two your reasoning for question 1.

3. What shape is a plasmid?

4. How is a plasmid different from human DNA? Write one difference.

5. Bacteria can share DNA through a unique method called transformation. What are the TWO requirements a bacteria cell must possess in order to share DNA with another bacteria cell?

6. Why during our experiment did we put our e.Coli with pGLO inserted in it onto agar plates with ampicillin (Amp)?

a. So that it would kill the e.Coli and serve as our control

b. To kill all the e.Coli that did not take up the pGLO

c. To create antibiotic resistant bacteria

d. To cause the e.Coli to glow

7. Yeast cells are what type of cell?

a. Bacteria

b. Eukaryotes

c. Prokaryotes

d. Archaea

8. Why would someone study yeast cells instead of human cells?

9. Do you agree or disagree with the following statement: If your cells is exposed to UV light and it causes a thymidine dimer, your cell is doomed to die.

10. Are wildtype (control) yeast immune to UV light damage?

11. BTB was a dye we used to directly measure ________

a. PH

b. Oxygen

c. Carbon Dioxide

d. Carbon

12. BTB was a dye we used to INDIRECTLY measure ________

a. PH

b. Oxygen

c. Carbon Dioxide

d. Carbon

13. What is one reason why a plant would want to close its stomata?

14. What is one function that ground tissues provides for a plant?

15. List one difference between monocots and dicots

16. Why is it important for a plant to have stomata? Write one reason why

17. What is the purpose of xylem in a plant cell?

18. Pholem is also important to plant cells, what is itâs purpose?

19. This theory explains why trees can grow to such tall heights and still provide water to their leaves.

a. Translocation

b. Transpiration

c. Cohesion-Tension

d. Vacuum

20. Fill in the blank

Pholem is considered to be a(n) _________ transport system while xylem is considered a(n) _______________transport system.

21. Apical meristems are found in these two places on a plant

a. At the site of new leaf growth and the roots closes to the top of the soil

b. Vascular tissue and ground tissue

c. Ground tissue and dermal tissue

d. The point of new growth on the stem and root

22. Fill in the blank.

Xylem moves substances _____ while phloem moves substances _____ a plant.

23. What are the two types of digestive mechanisms?

24. What is one benefit that mastication has for digestion?

25. What is an example of an organism that digests food intracellularly?

26. What is an example of an organism that digests food extracellularly?

27. Give two examples of where surface area is increased in a small space to aid in absorption within the human body

28. Name one difference between arteries and veins.

29. What is the role of capillaries in the circulatory system?

30. How are the terms âexcretionâ and âdefecationâ different?

31. What is the role of the ADH hormone?

32. What does the term âMedullaâ refer to when talking about mammalian tissue?

a. The outer edges of a tissue

b. The middle of a tissue

c. The top of a tissue

d. The bottom of a tissue

33. Fill in the blank

Mammals have a _______ circulatory system while insects have a _______ circulatory system.

34. What is one benefit a closed circulatory system provides?

35. What is hemolymph?

BIOL 1902 Lecture Notes - Ruffed Grouse, Spruce Grouse, Dentin

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