Which of the following hormones would be most useful in promoting the rooting of plant cuttings?
A) strigolactones
B) abscisic acid
C) cytokinins
D) gibberellins
E) indoleacetic acid
Answer: E
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If a scientist needs to put new DNA into a bacterium, she must _____ the bacterium
A) transform B) ligate C) make a library of the genes of D) make a cDNA library of E) make a vector of
Respond to statements 166–169 in reference to the autonomic
nervous system associated with the five regions of the human spinal cord listed below. a. cervical b. thoracic c. lumbar d. sacral e. coccygeal D 166. Sympathetic nerves from this region innervate the bladder, uterus, and genitals. D 167. Sympathetic nerves from this region innervate the kidney. D 168. Parasympathetic nerves from this region innervate the rectum. D 169. Sympathetic nerves from this region innervate the heart.
A woman can best predict the time of an upcoming ovulation by testing each day for ______.
A. luteinizing hormone B. follicle-stimulating hormone C. estrogen D. progesterone
The ability of some microbes, such as Trypanosoma or Giardia to alter their surface molecules and evade destruction by the host's antibodies is called
A) antigenic variation. B) lysogenic conversion. C) virulence. D) cytopathic effect. E) cytocidal effect.