Please answer all questions

1		Which of these characteristics is typical of cancer cells?
			A)	cancer cells lack contact inhibition
			B)	cancer cells induce angiogenesis
			C)	cancer cells lack differentiation
			D)	All of these are correct.
2		Cancer in situ _______.
			A)	invades normal tissue
			B)	is found in one place
			C)	dies quickly
			D)	spreads quickly
3		A(n) ______ is a cancer-causing gene.
			A)	oncogene
			B)	mutagen
			C)	antibody
			D)	antigen
4		The oncogenes most frequently involved in human cancers belong to the ______ gene family.
			A)	GPA
			B)	HIV
			C)	AIDS
			D)	ras
5		Tumors that fail to have cells undergoing apoptosis lack an active _________ gene.
			A)	p53
			B)	BRAC-1
			C)	ras
			D)	RB
6		A _______ is an environmental agent that can contribute to the development of cancer.
			A)	mutagen
			B)	fibrinogen
			C)	carcinogen
			D)	factor
7		Some examples of carcinogens are _______.
			A)	certain organic chemicals
			B)	radiation
			C)	viruses
			D)	All of these are correct.
8		What DNA virus has been linked to a type of human cancer?
			A)	hepatitis B virus
			B)	human papillomavirus
			C)	Epstein-Barr virus
			D)	All of these are correct.
9		The PAP smear is a test for _______ cancer.
			A)	colon
			B)	cervical
			C)	breast
			D)	ovarian
10		Sigmoidoscopy is a test for _______ cancer.
			A)	breast
			B)	colon
			C)	cervical
			D)	brain
11		The standard methods of treatment for cancer are _______.
			A)	surgery
			B)	radiation
			C)	chemotherapy
			D)	All of these are correct.
12		Most chemotherapeutic drugs kill cells by damaging _______.
			A)	DNA
			B)	protein
			C)	nearby blood vessels
			D)	All of these are correct.