The cell cycle is regulated by both internal and external signals. A signal from a cell's own DNA would be considered
regulation, whereas a signal from a hormone in a person's body would be
considered
regulation. When regulation gets messed up and the cell divides uncontrollably.
this causes :
which can be identified by the growth of
throughout the
body. When these are
}, it means that the cancer cells are contained in one location. When
these are
it means that the cancer cells spread or
into different parts
of the body
DRAG & DROP THE ANSWER
benign
cancer
carcinogens
death
external
Internal
malignant
metastasize
tumor(s)
apoptosis

Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)

Which of the following are causes of evolutionary change? 1)genetic drift 2) natural selection 3) gene flow 4)mutation

Why does sexual reproduction increase the genetic variation in a species? a. sexual reproduction doubles the chromosome number. b. sexual reproduction produces organisms with no dna. c. the gametes in sexual reproduction are exact clones of the parents. d. a fertilized egg has a mixture of alleles from the two parents.