The amino acid composition of thermostable proteins is not particularly unusual, except for a bias for increased levels of amino acids that form ?-helices

Indicate whether the statement is true or false.


Answer: TRUE

Biology & Microbiology

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Adding helical turns to a closed-circular DNA:

A. will decrease the linking number. B. causes the formation of left-handed supercoils. C. causes the formation of negative supercoils. D. causes the formation of right-handed supercoils. E. does not affect the linking number.

Biology & Microbiology

Plaque is _____ caused by _____

a. an infectious disease; bacterial biofilms d. a non-infectious disease; E. coli b. a non-infectious disease; inflammation of the gums e. an infectious disease; E. coli c. an infectious disease; non-pathogenic bacteria

Biology & Microbiology

Lines of longitude run perpendicular to the axis of the Earth

Indicate whether the statement is true or false

Biology & Microbiology

The C4 photosynthetic pathway is most common in

A) gymnosperm trees. B) angiosperm trees. C) algae, bryophytes, and ferns. D) grasses and shrubs in warm and dry climates.

Biology & Microbiology