Grade 12 Biology Quiz

What are antioxidants?

• Substances that fight against oxidation

• Substances that cause oxidation

• Substances that fight against bacteria

• Substances that cause necrosis

What is gangrene?

• Ischemia of tissue exposed to bacteria

• Loss of metabolic functions in cells

• Bluish discoloration of the skin

• Necrosis of deep muscle tissue

Which bacteria is associated with gas gangrene?

• Clostridium perfringens

• Staphylococcus aureus

• Escherichia coli

• Salmonella enterica

What happens during necrosis?

• Cells organelles swell and become nonfunctional

• Loss of circulation in the body

• Diminished production of proteins and ATP

• Cessation of cell membrane integrity

What is ischemia?

• Lack of circulation

• Loss of metabolic functions

• Bluish discoloration of the skin

• Death of body tissue

What is cyanosis?

• Bluish discoloration of the skin due to poor circulation

• Loss of metabolic functions in cells

• Ischemia of tissue exposed to bacteria

• Inflammation reaction in the body

What causes endothelial cell injury?

• Hypertension

• Antioxidants

• Gas gangrene

• Ischemia

What happens when nitric oxide production is diminished?

• Vasodilation ability of arteries diminishes

• Vasoconstriction of arteries occurs

• Blood within the artery clots more easily

• Inflammation occurs with injury

What are the ABCDE's of Cancer?

• Asymmetrical, Borders, Color, Diameter, Evolve

• Antioxidants, Blood flow, Cyanosis, Dysplasia, Endothelial injury

• Atrophy, Benign, Cyanosis, Dysplasia, Endothelial injury

• Asymmetrical, Benign, Cyanosis, Dysplasia, Endothelial injury

What is a neoplasm?

• Cells that divide uncontrollably and grow faster

• Cells that resemble normal cells and don't spread

• Cells that have lost normal architectural arrangement

• Cells that lack normal cell function and work