× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
bianca09 bianca09
wrote...
Posts: 6
Rep: 0 0
12 years ago
Hi im having trouble with exerise 4 questions. could you please help me out Slight Smile thank you heaps.

1. Which rat had the fastest baseline metabolic rate? _____________________________ _____________________________
2. Compare the baseline metabolic rates for the thyroidectomized rat and the normal rat and explain your results. ______________
3. Compare the baseline metabolic rates for the hypophysectomized rat and the normal rat and explain your results. _____________
The following questions refer to Activity 2: Determining the Effect of Thyroxine on Metabolic Rate.
4. What effect did administering thyroxine have on each of the rats? _____________________________ ________________
5. Explain why thyroxine had these effects. _____________________________ _____________________________ _______

The following questions refer to Activity 3: Determining the Effect of TSH on Metabolic Rate.
6. Was there a change in the metabolic rate of the thyroidectomized rat with the administration of TSH? Explain your results. _____
7. Did the results for the thyroidectomized rat indicate hyperthyroidism or hypothyroidism? ___________________________


8. Describe the effect of administering propylthiouracil on each of the rats, and explain why it had this effect. ______________
9. Do you think the drug propylthiouracil is used to treat hypothyroidism or hyperthyroidism? Explain your answer. ____________

Hormone Replacement Therapy

The following questions refer to Activity 5: Hormone Replacement Therapy.
10. Explain why ovariectomized rats were used in this experiment and correlate this to their baseline T score.______________
11. Recap your predictions regarding the effects of calcitonin and estrogen on bone density and explain why you made those
predictions. _____________________________ _____________________________ _____________________________ _
12. Why was one of the ovariectomized rats injected with saline? _____________________________ ___________________
13. What effect did the administration of estrogen injections have on the estrogen-treated rat? __________________________
14. What effect did the administration of calcitonin injections have on the calcitonin-treated rat? _______________________
15. How did your results compare to your predictions? _____________________________ ____________________________
Insulin and Diabetes

The following question refers to Activity 6: Obtaining a Glucose Standard Curve.
16. What is a glucose standard curve, and how can you use this tool to determine a concentration of glucose? ___________________
The following questions refer to Activity 7: Measuring Fasting Plasma Glucose.
17. Which patient(s) had glucose reading(s) in the normal range? _____________________________ ____________________
18. Which patient(s) had glucose reading(s) in the diabetic range? _____________________________ ___________________
19. Which patient(s) had glucose reading(s) in the impaired range? _____________________________ ___________________
20. Describe the diagnosis for Patient 3. _____________________________ _____________________________ ___________

The following questions refer to Activity 8: Measuring Cortisol and Adrenocorticotropic Hormone.
21. Which patient would most likely be diagnosed with Cushing’s disease? Why?
22. Which two patients have hormone levels characteristic of Cushing’s syndrome?
23. Patient 2 is being treated for rheumatoid arthritis with prednisone. How does this change the diagnosis? ________________
24. Which patient would most likely be diagnosed with Addison’s disease? Why?
Read 6967 times
7 Replies

Related Topics

Replies
wrote...
12 years ago
I can help you with the first few:

1. The normal rat.

2. The thyroidectomized rat had a lower baseline metabolic rate beause the removal of its thyroid gland prevented it from producing any thyroxine.

3. The hypophysectomized rat had a lower baseline metabolic rate because removal of the pituitary gland, or hypophysis, prevented TSH production.

4. The baseline metabolic rate increased in each rat.

5. The effect of thyroxine is to increase baseline metabolic rate.
Biology!
bianca09 Author
wrote...
12 years ago
Thank you for your help Slight Smile  does anyone else know the solutions to the rest of the questions ? please and thank you .
wrote...
12 years ago
Thank you for your help Slight Smile  does anyone else know the solutions to the rest of the questions ? please and thank you .

If you use this site you are committing academic dishonesty.  If you are one of our students you will be caught.  
wrote...
12 years ago
THIS IS CHEATING.  If you are caught you will be guilty of academic honesty violations.
wrote...
Valued Member
Educator
12 years ago
THIS IS CHEATING.  If you are caught you will be guilty of academic honesty violations.

Which academic policy are you referring to? It's not their fault you're too lazy to write your own questions. You're getting paid to copy-and-paste questions from the test-bank, you ought to re-evaluate yourself before judging others.
cntryfan4life
wrote...
12 years ago
The following question refers to Activity 6: Obtaining a Glucose Standard Curve.

16. What is a glucose standard curve, and how can you use this tool to determine a concentration of glucose?

It gives the point of reference for converting optical density readings. We can use it to determine the concentration of glucose; we can use a spectrophotometer to determine hwo much glucose is in the blood sample.

The following questions refer to Activity 7: Measuring Fasting Plasma Glucose.
17. Which patient(s) had glucose reading(s) in the normal range?

Patient #1

18. Which patient(s) had glucose reading(s) in the diabetic range?

Patients #3 and 5

19. Which patient(s) had glucose reading(s) in the impaired range?

Patients #2 and 4

20. Describe the diagnosis for Patient 3.

 Type 2 diabetes mellitus. Glucose is unable to be taken up by body’s cells.

The following questions refer to Activity 8: Measuring Cortisol and Adrenocorticotropic Hormone.
21. Which patient would most likely be diagnosed with Cushing’s disease? Why?

Patient #3 levels of coritsol and ACTH were both high

22. Which two patients have hormone levels characteristic of Cushing’s syndrome?

Patients #2 and 5

23. Patient 2 is being treated for rheumatoid arthritis with prednisone. How does this change the diagnosis?

#2 is iatrogenic , this patient is being treated temporary and when it is stopped it could be corrected.

24. Which patient would most likely be diagnosed with Addison’s disease? Why?

#4  low cortisol levels but the ACTH levels where high.
wrote...
12 years ago
6. Was there a change in the metabolic rate of the thyroidectomized rat with the administration of TSH? Explain your results.

It did not have much of a change. The rate has no thyroid for the TSH to stimulate so it doesn’t change anything.

7. Did the results for the thyroidectomized rat indicate hyperthyroidism or hypothyroidism?

Hypothyroidism

The following questions refer to Activity 4: Determining the Effect of Propylthiouracil on Metabolic Rate.
8. Describe the effect of administering propylthiouracil on each of the rats, and explain why it had this effect.

It made the rat’s rates stay low. It inhibits thyroxin and since it is not stimulated in any of the rats, there rates have no change.

9. Do you think the drug propylthiouracil is used to treat hypothyroidism or hyperthyroidism? Explain your answer.

Hyperthyroidism, since it inhibits thyroxin we can use it to control the how much the thyroid produces and control hyperthyroidism.

Hormone Replacement Therapy
The following questions refer to Activity 5: Hormone Replacement Therapy.
10. Explain why ovariectomized rats were used in this experiment and correlate this to their baseline T score.

They were used because they are no longer producing estrogen since the removed their ovaries. Since estrogen is no longer being produced the went into menopause and resulted in osteoporosis.

11. Recap your predictions regarding the effects of calcitonin and estrogen on bone density and explain why you made those predictions.

I predicted they would improve the bone density. These are both a form of hormone replacement so when you take estrogen it will increase bone density and calcitonin will inhibit osteoclast activity and stimulate calcium uptake.

12. Why was one of the ovariectomized rats injected with saline?

Saline was used as the control for the experiment. Saline wouldn’t effect the case on any rat since its just water and salt.

13. What effect did the administration of estrogen injections have on the estrogen-treated rat?

It improved the bone density from osteoporosis to osteopenia.

14. What effect did the administration of calcitonin injections have on the calcitonin-treated rat?

It improved bone density from osteoporosis to osteopenia. It was a not big difference but still changed.

15. How did your results compare to your predictions?

My prediction was right.  They both improved.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  982 People Browsing
Related Images
  
 11
  
 159
  
 310
Your Opinion
Who's your favorite biologist?
Votes: 585