Which statement concerning cell division and cancer is incorrect?
A) Apoptosis can be used to kill cancerous cells in the body.
B) Normal cells are limited in how many times they can divide.
C) Oncogenes protect against cancer.
D) Cancerous cells can become immortal.
Answer: C
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The ____ is a large branched artery that leads to all body regions except the lungs
a. pulmonary artery b. coronary artery c. aorta d. superior vena cava e. inferior vena cava
The brains of Alzheimer disease patients display characteristic lesions called senile plaques formed by the accumulation of a protein fragment called amyloid beta-protein. How are the plaques believed to influence the progression of the disease?
1.Amyloid beta-protein accumulates inside cells, disrupting cell structure and function. 2.The plaques are present in brains of both normal elders and AD patients and differences between these groups in their number and rate of development are insignificant. 3.The plaques cause the degeneration and death of specific neurons, particularly in the limbic system. 4.The plaques cause the random degeneration and death of neurons throughout the brain.
An organism with multiple sets of chromosomes from different species is called:a
a gametopolyploid. b. a heteropolypoloid. c. a hybrid polyploid. d. an autopolyploid. e. an allopolyploid.
Describe the digestion of fat in the intestine, and the transport of fats through the epithelium into the bloodstream.
What will be an ideal response?