In eukaryotes many genes may be affected by a steroid hormone because they are clustered in operons
1.True
2.False
2
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The following is the sequence of bases in the sense strand of a DNA segment and contains the beginning of a gene. DNA 3' A T A T T A C C A G G C A T G G A C C C C C G G G 5'
Based on this sequence, write the sequence of the anti-sense DNA strand and the mRNA. Label the 5' and 3' ends in your predicted sequences. The start codon in this organism is AUG. Indicate where the start codon is in your sequence. Why is the start codon important? Why does there have to be a specific start codon? What will be an ideal response?
Detection and response to environmental cues or stimuli are primarily functions of
a. metabolism. b. the nervous system. c. catabolism. d. the endocrine system. e. thermodynamics.
How do changes in histone modifications lead to changes in chromatin structure?
(a) They directly lead to changes in the positions of the core histones. (b) They change the affinity between the histone octamer and the DNA. (c) They help recruit other proteins to the chromatin. (d) They cause the histone N-terminal tails to become hyperextended.
An animal, such as an arthropod, that transmits a pathogen from one host to another is a
A) Reservoir B) Carrier C) Fomite D) Source E) Vector