Which of these is not a component of cell walls in plants?
1.cellulose
2.chitin
3.lignin
4.pectin
2
Biology & Microbiology
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An example of correct nucleotide pairing is
A) T and U. B) G and U. C) A and T. D) C and U.
Biology & Microbiology
Which factor has the LEAST effect on the amount of incoming light that strikes an area?
a. latitude b. temperature c. the tilt of Earth’s axis d. the amount of cloud cover e. season
Biology & Microbiology
What are the downsides of sweat as a cooling mechanism? What will be an ideal response?
Biology & Microbiology
During transcription of the trp operon, pairing of regions 2 and 3 in the leader peptide mRNA creates a(n) ________ signal
A) continuous B) termination C) antitermination D) induction E) repression
Biology & Microbiology