Mammals excrete nitrogenous wastes in which of the following forms?

What will be an ideal response?


urea

Biology & Microbiology

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Vertebrate bone consists primarily of a crystalline mixture of which two substances?

A. Ca2+, PO4- B. Ca2+, SO4- C. Ca2+, Cl2 D. Na+, Cl- E. Adenosine, PO4-

Biology & Microbiology

The Pacinian corpuscle is used in detecting

a. sound. b. pressure. c. chemicals. d. sight. e. chemical differences

Biology & Microbiology

Which list accurately orders a food chain in the grasslands of Africa from low to high trophic levels?

A) grass, giraffes, lions, vultures, fungi B) grass, fungi, giraffes, vultures, lions C) grass, lions, giraffes, fungi, vultures D) grass, fungi, lions, vultures, giraffes

Biology & Microbiology

A gene that codes for a protein was removed from a eukaryotic cell and inserted into a prokaryotic cell. Although the gene was successfully transcribed and translated, it produced a different protein than it produced in the eukaryotic cell. What is the most likely explanation?  

A.  There are slight differences in the genetic code for prokaryotes and eukaryotes. B.  Unlike eukaryotes, which have three different RNA polymerases, prokaryotes have a single RNA polymerase. C.  Eukaryotic genes often contain introns while prokaryotic genes do not. D.  Eukaryotic transcripts have a 5' cap while prokaryotic transcripts do not. 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 transcription and translation? 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