Which of the following factors is the only one
that influences radioactive decay?
a. time
b. temperature
c. pressure
d. moisture
e. chemical bonding
A
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Answer the following statements true (T) or false (F)
1.The pyloric sphincter lies between the small intestine and large intestine, thereby controlling the movement of food into the large intestine. 2.The lining of both the stomach and small intestine is protected from digestive enzymes by a mucus secretion. 3.Acid reflux, or "heartburn," is caused when the gastric juice moves back into the esophagus through the pyloric sphincter. 4.The trace mineral iron is necessary in humans for the transport of oxygen by hemoglobin molecules. 5.If the side effect of a drug was to disrupt homeostasis of vitamin C, leading to its premature breakdown and insufficient concentration, scurvy could result.
Distinguish between sense and nonsense mutations and describe the characteristics of a protein affected by each type
of mutation. What will be an ideal response?
Malpighian tubules are used for excretion
____________________ Indicate whether the statement is true or false.
What is a reason why viruses CANNOT be classified in a kingdom?
A. They are not composed of cells. B. They have features of several kingdoms. C. They do not have a genome. D. They evolve too quickly.