Your grandmother complains that the meal she just ate was rather bland or tasteless. This is because as an elderly person, her
A. taste buds are decreasing in number and decreasing in sensitivity.
B. food was prepared with little regard to taste.
C. taste buds are increasing in number but decreasing in sensitivity.
D. taste buds are decreasing in number but increasing in sensitivity.
E. taste buds have not changed, but her taste center in the cerebral cortex has changed.
Answer: A
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If a nerve cell has a greater concentration of Na+ on the outside the cell membrane, compared to inside, then the movement of Na+ outside is by diffusion.
Answer the following statement true (T) or false (F)
Using the figure below, identify the labeled part.
1. Label A: ______________________________
2. Label B: ______________________________
3. Label C: ______________________________
4. Label D: ______________________________
5. Label E: ______________________________
6. Label F: ______________________________
7. Label G: ______________________________
8. Label H: ______________________________
9. Label I: ______________________________
10. Label J: ______________________________
11. Label K: ______________________________
12. Label L: ______________________________
13. Label M: ______________________________
14. Label N: ______________________________
15. Label O: ______________________________
16. Label P: ______________________________
17. Label Q: ______________________________
18. Label R: ______________________________
19. Label S: ______________________________
20. Label T: ______________________________
21. Label U: ______________________________
22. Label V: ______________________________
23. Label W: ______________________________
24. Label X: ______________________________
25. Label Y: ______________________________
26. Label Z: ______________________________
Crossing over is important for ________.
increasing genetic variability preventing mutations limiting genetic recombination maintaining chromosome structure
The area between two adjacent Z lines is called a(n) ____________________
Fill in the blank(s) with correct word