What is the physiological cause of a heart attack?
A) rupture of coronary arteries
B) a blood clot moving through the heart
C) a blood clot lodging in a blood vessel supplying the heart
D) scar tissue in the heart muscle
C
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Mobile genetic elements that encode proteins that contribute to or confer virulence are known as contiguous sequences.
Answer the following statement true (T) or false (F)
Light-dependent reactions in plants proceed in the _____
a. thylakoid membrane c. stroma b. plasma membrane d. cytoplasm
Slugs produce mucus all over their bodies that helps keep them moist and helps them move. The mucus also can protect the slugs from pathogens. A slug's mucus is a component of which part of the immune system?
A) internal innate immunity B) external innate immunity C) adaptive immunity D) lymphatic system
If protein were the genetic principle and not nucleic acid, significant mutagenic effects would be detected at ________
A) 300 nm B) 240 nm C) 320 nm D) 260 nm E) 280 nm