Which of the following is not a characteristic of cancerous cells?
A) contact inhibition
B) unusual shapes and sizes
C) immortality
D) All of the above are characteristics of cancerous cells.
Answer: A
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All of the varied sensations we experience are due to which three categories of sensory receptors?
A. visioceptor, audioceptor, olfactoceptor B. exteroceptor, interoceptor, proprioceptor C. mechanoreceptor, chemoreceptor, electromagnetic receptor D. mechanoreceptor, olfactory receptor, photoreceptor E. mechanoreceptor, chemoreceptor, nociceptor
In the accompanying figure, the purpose of growing the donor cells in nutrient-limited media is to:
a. have small cells that would be easier to manipulate.
b. replicate a normal environment.
c. force the donor cell nucleus into the G0 cell stage.
d. induce favorable mutations.
e. initiate apoptosis.
Plantae and Animalia are two examples of:
a. species b. genus c. phylums d. kingdoms
Which of the following is not a shape seen in prokaryotes?
A. Spheres B. Icosahedrons C. Rods D. Spirals