Which DNA sequence below would be a palindromic sequence?
a. AGCGCT
b. AGCAGC
c. AAAGGG
d. ACACAC
e. AGTCGT
a
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A loose network of polymers extending outward from a cell is called a(n)
A) slime layer. B) lipid A. C) capsule. D) adhesion.
Which of the following is true of the topoisomerases found in bacteria?
A. Type I topoisomerases introduce single-stranded breaks and as a result change the linking number by 1. B. Type I topoisomerases introduce single-stranded breaks and as a result change the linking number by 2. C. Type II topoisomerases introduce single-stranded breaks and as a result change the linking number by 2. D. Type II topoisomerases introduce double-stranded breaks and as a result change the linking number by 1. E. Type I topoisomerases are the only category that can introduce negative supercoils.
Aquatic organisms are unable to tolerate low pH conditions largely because acidic waters contain high concentrations of ________
Fill in the blank(s) with correct word
Teratogens affect the ____ more than any other part of the fetal body
a. central nervous system
b. upper limbs
c. heart
d. lower limbs
e. external genitalia