When cancer cells are crowded by surrounding cells, the cancer cells become spherical and they can still go through cell division.
a. true
b. false
Ans: a. true
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Ivan Pavlov rang a bell whenever he fed a dog, and later the dog salivated at the sound of the bell. What term best describes this experiment?
a. classical conditioning b. habituation c. operant conditioning d. imprinting e. social learning
Tall is dominant to dwarf in pea plants. If two dwarf pea plants were crossed, their offspring will be
A. half tall, half dwarf plants. B. all tall plants. C. plants of an intermediate height. D. all dwarf plants.
In the process of splitting water during photosynthesis, the first cyanobacteria released:a
hydrogen gas. b. oxygen gas. c. photons of light. d. heat from longer wavelengths of light. e. electrons, protons, and neutrons.
A basilisk lizard can run across the surface of a pond due to a property of water called ________
Fill in the blank(s) with correct word