A chemical interaction in which the products contain less free energy than the reactants is called a(n) ____________________ reaction.
Fill in the blank(s) with the appropriate word(s).
exergonic
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Guidelines for the assignment of sex for an individual include
A. karyotype results. B. the presence of ovaries or testes. C. the presence of penis or clitoris. D. karyotype results and the presence of ovaries or testes. E. the presence of ovaries or testes and the presence of a penis or clitoris.
Until recently, protists have been classified according to observable traits such as modes of nutrition and mechanisms of movement. What is the basis for modern protist classification?
a. their evolutionary relatedness b. their similarity to plants c. their cell wall types d. their types of life cycles
Why are short tandem repeats (STRs) used in DNA fingerprinting?
A) Some individuals have them and some don't. B) They are the only human genes that can be cut by restriction enzymes. C) It is unlikely two unrelated people will have an identical number of repeats at the same location in their genomes. D) They are exactly the same in all individuals.
Which of the following is an example of vehicle transmission?
A. kissing B. having intercourse C. sharing a glass D. drinking contaminated water E. being bitten by a mosquito