The health effects of X-rays on a fetus depend on the amount of ____________________ and the
____________________ of the fetus Fill in the blank(s) with the appropriate word(s).
radiation; age
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Why have humans experienced cultural evolution, while other species of primates have not?
a. Humans have greater intelligence than other primates. b. Humans have a higher level of social organization. c. Humans live longer than other primates. d. Humans are unable to escape predators like other primates. e. Humans are physically stronger than most primates
What is the channel protein
What will be an ideal response?
Enzymes that cleave DNA at specific sites are called ________.
A. restriction endonucleases B. DNAses C. peptidases D. vectors
Heterotrophs must obtain organic molecules that have been synthesized by
A. autotrophs. B. bacteria. C. biogeochemical cycles. D. decomposers.