Darkness increases secretion of __________ by the pineal gland in the brain. Fill in the blank(s) with the appropriate word(s)


ANSWER: melatonin

Biology & Microbiology

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The proteins necessary for the use of lactose in E. coli are collectively called the  

A.  lac regulator. B.  lac suppressor. C.  lac operon. D.  lac promoter. E.  lac transcriptional operator.

Biology & Microbiology

The polymerase chain reaction (PCR) is used as a tool for:

A. breaking down DNA for analysis B. amplifying the amount of DNA to provide a large sample C. fragmenting DNA into smaller pieces D. rearranging the gene sequences in isolated fragments of DNA E. extracting DNA from nuclei

Biology & Microbiology

What happens immediately after a signaling molecule binds to an RTK?

a. receptor dimerization b. receptor trimerization c. receptor denaturation d. receptor polymerization e. receptor hydrolysis

Biology & Microbiology

The _________l says that a period of no change is interrupted by speciation.

What will be an ideal response?

Biology & Microbiology