In the accompanying figure, the structure labeled as 3 is:

a. the secondary xylem.
b. formed by the division of the vascular cambium.
c. found adjacent to the pith.
d. usually referred to as wood.
e. the cork cambium.


b

Biology & Microbiology

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True or false: All 64 possible triplet sequences in an mRNA are recognized by a nucleic acid molecule

A. true B. false

Biology & Microbiology

The breast cancer gene BRCA1 has a very similar sequence in humans, mice, and gorillas, due to its origination in a common ancestor. The BRCA1 genes in these species are examples of __________________.

A.  orthologs B.  paralogs C.  polyploidy D.  synteny Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean?   Gather Content · What do you already know about homology?   Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Behaviors that appear to be genetically programmed are called

A. voluntary. B. fixed action patterns. C. ultimate. D. reflexes. E. innate.

Biology & Microbiology

During aerobic respiration, which stage produces the most ATP?

Biology & Microbiology