Which of the following foods would be least likely to contribute to the development of heart disease?
A) margarine
B) butter
C) bacon
D) fish oil
Answer: D
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Which of the following is one of Chargaff’s
rules about DNA structure?
a. phosphate groups are connected to sugars by covalent bonds b. base pairs connect to each other by hydrogen bonds c. the amounts of adenine and thymine are the same as are the amounts of cytosine and guanine d. the DNA molecule forms into a double helix e. the strands in a DNA molecule run in opposite directions
Red algae
a. are primarily marine organisms. b. are thought to have developed from green algae. c. contain xanthophylls as their main accessory pigments. d. are mostly unicellular. e. are all of these
A camping party got lost in the wilderness for several days. They had sufficient food but misplaced their matches and could drink only the water from the clear lakes and streams in the area without boiling it
Very quickly everyone developed diarrhea that lasted the entire 8 days until they were rescued. Which type of pathogen was probably responsible? A) protozoan B) fungus C) prion D) vector
Which of the following can result when antibiotic therapy disrupts the normal microbiota?
A) anaphylactic shock B) black hairy tongue C) pseudomembranous colitis D) thrush E) both pseudomembranous colitis and thrush