An increase in the amount of carbon dioxide in the body causes
A) a simultaneous increase in the amount of oxygen in the body.
B) an increase in the pH of the blood.
C) a decrease in the rate at which impulses are released from the respiratory center.
D) slow, shallow breathing.
E) a decrease in the pH of the cerebrospinal fluid.
E
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The lens of the eye loses _______ with age and cannot change from viewing distant objects and close objects as readily as before.
Fill in the blank(s) with the appropriate word(s).
High concentrations of salt and sugar in foods
A. are useful in preserving the food. B. tend to draw water out of a cell. C. tend to force water into a cell, causing plasmolysis. D. have no effect on water availability. E. are useful in preserving the food AND tend to draw water out of a cell.
Identify the anticodon sequences for an mRNA sequence that is 5?-AUG GGC ACU CAU-3?.
A. 3?AUG 5’ – 3’ GGC 5’ – 3’ ACU 5’ – 3’ CAU5? B. 3?UAC 5’ – 3’ CCG 5’ – 3’ UGA 5’ – 3’ GUA5? C. 5?AUG 3’ – 5’ GGC 3’ – 5’ ACU 3’ – 5’ CAU3? D. 5?UAC 3’ – 5’ CCG 3’ – 5’ UGA 3’ – 5’ GUA3? E. 3?TAC 5’ – 3’ CCG 5’ -5’ TGA 3’ – 5’ GTA 3?
Vascular tissue cells with long, tapered, overlapping ends are known as ____
a. sclerenchyma b. tracheids c. collenchyma d. parenchyma e. vessel elements