Ques:Q: The rate of a reaction can be expressed either in terms of the decrease in the amount of what or the increase in the amount of a product per unit time? Choices: - plasma - sulfate - isotope - reactant A:

Ans:reactant
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Ques:Q: What do we call the orderly sequence of events in the life of a cell from the division of a single parent cell to produce two new daughter cells, to the subsequent division of those daughter cells? Choices: - cell death - cell replication - circadian cycle - cell cycle A:

Ans:cell cycle
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Ques:Q: What are substances that cannot be broken down into simpler substances with different properties called? Choices: - atoms - compounds - molecules - elements A:

Ans:elements
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Ques:Q: What prevents solutes that have accumulated in the xylem from leaking back into the soil solution? Choices: - the exoskeleton - the exodermis - the altostratus - the endodermis A:

Ans:
the endodermis
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