When conducting descriptive research, a scientist primarily uses ____
a. experiments
b. experimental data
c. control data
d. observational data
e. speculation
d
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Proteins are polymers formed of structural units called:
A. fatty acids. B. amino acids. C. nucleotides. D. phosphate groups. E. monosaccharides.
Prolactin
a. stimulates the mammary glands to produce milk. b. causes the development of breasts and other secondary sexual characteristics in the male. c. acts in concert with FSH to produce milk. d. has secondary effects on reducing the size of the uterus after birth. e. is secreted only after the flow of milk has begun after delivery of the child.
The pairing of homologous chromosomes
A. only occurs in mitosis. B. is called synapsis. C. is called crossing over. D. occurs during telophase I. E. occurs during anaphase II.
Work by ________ laid the foundations of immunology with the development of vaccines
A) Redi and Spallanzani B) Koch and Pasteur C) Jenner and Pasteur D) Lister and Semmelweis E) Pauling and Woese