Which of the following could accept one (and only one) electron?
A) carbon (atomic number = 6 )
B) nitrogen (atomic number = 7 )
C) oxygen (atomic number = 8 )
D) hydrogen (atomic number = 1 )
D
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In a wind-pollinated species, which of these floral parts is likely to be inconspicuous or absent?
A. receptacle B. stamens C. pistils D. petals E. stigmas
Which of the following diseases has gene
therapy been successful in curing?
a. AIDS b. SCIDS c. diabetes d. hemophilia A e. more than one of these
While looking in a tide pool, you find an animal with a two-part shell and a large foot that it uses to bury itself in the
sand. What is the likely identity of your find? a. a gastropod b. a chiton c. a bivalve d. a cephalopod e. a snail
Genetic programmed cell death ____
a. occurs during zygote formation b. occurs during cleavage c. is known neurulation d. is important in morphogenesis e. is important in gastrulation