Chemical reactions occur when substances undergo _________ to form new substances.
Fill in the blank(s) with the appropriate word(s).
Answer: chemical changes
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Return to the survivorship model you created using dice: You probably found that the chance of dying from heart disease is approximately one-sixth for each die, indicating that survivorship is essentially the same for each age group. Compare what happened in your model with a realistic projection showing at what ages most humans die of heart disease.
What will be an ideal response?
Bacteria that resist killing by complement proteins are termed
A. carriers. B. serum resistant. C. balanced pathogens. D. mutualistic. E. carriers AND serum resistant.
The acid growth hypothesis links
A. oligosaccharins to pH changes. B. cytokinin to thigmonasty. C. auxin to cell wall expansion. D. gibberellin to root elongation. E. ethylene to leaf abscission.
Chemoreceptors play a role in the sense of _____
a. taste d. hearing b. smell e. both tast and smell c. touch f. all of these