Human beings have twenty-three ________ pairs of chromosomes.
a. homogeneous c. homologous
b. heterogeneous d. heterologous
Question 2One group of researchers conducted a study on adolescent emotions by paging fifth- through ninth-graders at various times during the day and asking for a description of their moods at that moment. They also collected questionnaires and found that the older children expressed more negative emotions associated with
a. a lack of sleep. c. their physical appearance.
b. negative life events. d. their dietary intake.
Question 3The sequence of nucleotides that resembles a long, spiral staircase is called ________, or DNA.
a. diribonucleic acid c. diribonucleic analog.
b. deoxyribonucleic acid. d. deoxyribonucleic analog.
Question 4As children approach their adolescent years, their verbal descriptions of their emotions shift from concerns with
a. basic factors to complex factors.
b. social factors to internal psychological factors.
c. situational factors to internal psychological factors.
d. internal psychological factors to situational factors.
Question 5Genes are made up of various arrangements of four nitrogen-based chemical building blocks called
a. DNA. c. nucleotides.
b. chromosomes. d. neurotransmitters.
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