A 41-year-old female with a family history of breast cancer has had a baseline mammogram. She states that she performs monthly self-breast exams but really has a hard time evaluating her lumps since she has numerous cysts.
At her annual mammogram, the technician views a suspicious area and refers her to the radiologist. She asks the nurse in the office, How can a lump appear so quickly? The nurse's response is based on which of the following principles?
A)
A tumor is undetectable until it has doubled 30 times and contains at least 1 billion cells.
B)
Many tumor cells never leave the M-phase of the cell cycle.
C)
Cancer cells are undifferentiated and come in various shapes and sizes.
D)
If the breast has a lot of cysts, then the fluid within those sacs makes it difficult to feel the hard lumps of a cancer.
Question 2
A researcher is involved in the investigation of an individual's genetic abnormality. Which of the following situations could the researcher most likely rule out as the genetic cause of a mutation?
A)
Loss of a cytosine-guanine base pair
B)
Formation of an adenine-uracil base pair
C)
Substitution of an adenine-thymine base pair for a cytosine-guanine base pair
D)
Insertion of an extra adenine-thymine base pair
The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders,
Aztecs confront the Spaniards, from Diego de Durán's History of the Indies of New Spain.
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
History Quiz Questions
Cancer cells can move to new locations in the body, a process called metastasis