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BIOS 255 Comprehensive Exam 2 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct $10.99   Add to cart

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BIOS 255 Comprehensive Exam 2 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct

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BIOS 255 Comprehensive Exam 2 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct

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  • August 21, 2024
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  • 2024/2025
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  • Questions & answers
  • BIOS 255
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BIOS 255 Comprehensive Exam 2


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, BIOS 255 Comprehensive Exam 2

1. What is homeostasis?
Answer: maintenance of a stable internal environment with thecontribution of all organ
systems

2. What are the components of a homeostatic mechanism?
Answer:
-Stimulus
-Receptors
-Control center
-Effector
-Response

3. What is a negative feedback mechanism?
Answer: Body REVERSES, or goes against,an original stimulus to return to homeostasis
Example: Blood glucose regulation after eating.

4. What is a positive feedback mechanism?
Answer: Amplifies the change from thenormal level. (Agrees with the change)
Example: Childbirth, blood clotting

5. What feedback mechanism is most common?
Answer: negative

6. Inferior
Answer: Below; at a lower level

7. Superior
Answer: Above; higher level

8. Lateral
Answer: Side; Away from the midline of the body

9. Proximal
Answer: Closer to the point of attachment

10. Distal
Answer: Father away from the point of attachment

, 11. Medial
Answer: Toward the midline of the body

12. Sagittal
Answer: divides body into left and right

13. Transverse
Answer: Divides body into upper and lower parts

14. Anterior
Answer: toward the front of the body

15. Posterior
Answer: toward the back of the body

16. Frontal plane
Answer: Divides the body into anterior (front) and posterior (back) portions.

17. Which part of the atom is involved in chemical reactions?
Answer: Electrons

18. Which part of the atom makes up the atomic number?
Answer: Protons

19. pH scale
Answer: Measurement of hydrogen ion concentration
- pH < 7: Acidic
-pH > 7: Alkaline (basic)
-pH = 7: neutral

20. What is the main function on rough endoplasmic reticulum?
Answer: Protein syn-thesis

21. What kind of cell division results in a diploid, increasing the number ofcells?
Answer: Mitosis

22. How many pairs of chromosomes do humans have?
Answer: 23 pairs

23. What kind of cell division results in a haploid?
Answer: Meiosis

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