Laws attempting to limit the number of offspring a couple may have is a potential consequence of what?
a. decrease in age structure of the human population
b. increased carrying capacity in a habitat
c. exponential human population growth
d. logistic human population growth
c. exponential human population growth
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DNA can be transferred from one bacterial cell to another by ____
a. conjugation only b. transformation only c. conjugation and transformation only d. conjugation and transduction only e. conjugation, transformation, and transduction
Respond to statements 170–174 in reference to the five regions
of the vertebrate brain listed below. a. cerebrum b. hypothalamus c. pons d. cerebellum e. medulla oblongata D 170. This region contains the reflex centers involved in respiration. D 171. This region controls much of the endocrine system. D 172. This region controls the autonomic division of the nervous system. M 173. This region controls the complex coordination of motor activity and limb movement. D 174. This region connects to parasympathetic neurons that innervate the heart and lungs.
During prophase, ____ is(are) compacted into visible chromosomes
a. chromatin b. centrioles c. centromeres d. kinetochores e. tetrads
What happens quite often to the number of normal receptors in the plasma membranes of malignant cells as compared to normal cells?
a) Malignant cells usually have a much smaller number of plasma membrane receptors than normal cells. b) Malignant cells usually have the same number of receptors in their plasma membranes as normal cells. c) Malignant cells usually have no plasma membrane receptors, while normal cells have them. d) Malignant cells usually have a much larger number of plasma membrane receptors than normal cells. e) None of the choices is correct.