Alveoli are the respiratory surfaces of birds

Indicate whether the statement is true or false.


ANS: F, bronchi

Biology & Microbiology

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Explain why organisms undergoing rapid evolutionary change often contain relatively large numbers of mobile DNA elements, whereas once organisms settle into a stable evolutionary niche, most of these mobile elements are lost

What will be an ideal response?

Biology & Microbiology

f you consider the combined processes of photosynthesis and cellular respiration, the electrons found in H2O at the beginning of the light reactions end up attaching to ________ during respiration.

-O2 to make new H2O -NADPH to make new glucose -pyruvate to make ethanol -electron transport carriers to make O2 -none of the above

Biology & Microbiology

There is a general inverse relationship between DNA content and organismic complexity

Indicate whether the statement is true or false

Biology & Microbiology

The result obtained in Jacob and Monod's merodiploid analysis that suggested the lacO region acts in cis to regulate the lac operon was:

A. a nonfunctional lacI mutant is rescued by a wild-type lacI allele. B. a nonfunctional lacI mutant cannot be rescued by a wild-type lacI allele. C. a nonfunctional lacO mutant is rescued by a wild-type lacO allele. D. a nonfunctional lacO mutant cannot be rescued by a wild-type lacO allele.

Biology & Microbiology