The layers of cells that protect the root apical meristem are the

A. endodermis.
B. bark.
C. periderm.
D. root cap.
E. cortex.


Answer: D

Biology & Microbiology

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The trp operon is an example of which type of transcriptional regulation?

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The behavioral response tested using the models in Figure 51-1 is:

a. classical conditioning. b. habituation. c. imprinting. d. insight. e. a sign stimulus

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When properly aligned, the enzyme and substrate form an enzyme-substrate (ES)______.

Fill in the blank(s) with the appropriate word(s).

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The underlying factor that allows an organism to become a separate species is _____.

a. ability to produce a hybrid b. polyploidy c. sufficiently large genetic differences d. isolation e. genetic divergence

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