In mammals, the master clock is located in the:a

pineal gland.
b. suprachiasmatic nucleus.
c. crepuscular gland.
d. biological clock.
e. pituitary gland.


b

Biology & Microbiology

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Recent research has suggested that some pseudogenes and non-protein-coding DNA code for RNAs that affect transcription of coding regions. This suggests that  

A.  pseudogenes code for proteins. B.  non-protein-coding DNA has no function. C.  non-protein-coding DNA may regulate gene expression. D.  pseudogenes have no function. 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 non-protein-coding DNA? 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

Anticodons pair with

a. codons on DNA b. codons on mRNA. c. codons on tRNA d. codons on rRNA e. messenger RNA and ribosomal RNA.

Biology & Microbiology

Which respiratory disease is caused by a bacterial infection?

A. the common cold B. asthma C. lung cancer D. tuberculosis E. cystic fibrosis

Biology & Microbiology

Which group includes organisms that are unicellular, have two flagella and contain chlorophyll a & c?

A. foraminifera B. dinoflagellates C. euglenoids D. choanoflagellates

Biology & Microbiology