Which is true of free radicals?
What will be an ideal response?
They contribute to diseases and aging
They have unpaired electrons
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A(n) ____________________ organism is one that carries a gene that has been transferred to it from another species
Fill in the blank(s) with correct word
What change does binding of the sperm membrane to the oocyte membrane elicit?
a. The oocyte dispels its nucleus. b. The oocyte begins cleavage. c. The oocyte completes meiosis II. d. The sperm returns back to the oviduct. e. The sperm releases a polar body.
What is a seed?
A. a mature pollen B. a diploid embryo C. a mature sporophyte D. a diploid spore E. a haploid gametophyte
Which of the following is (are) used to define the field of microbiology?
A. The size of the organism studied B. The techniques in the study of organisms regardless of their size C. Both the size of the microorganism studied and the techniques employed in the study of organisms regardless of their size. D. Neither the size of the organism studied nor the techniques employed in the study of organisms regardless of their size.