In what way are eyes and eyespots similar to each other?
a. They are both simple.
b. They both sense light.
c. They are both big.
d. They both sense the absence of light.
Ans: b. They both sense light.
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The black spots seen on a moldy piece of bread are which part of a zygomycete?
A. the sporangia B. the hyphae C. the mycelium D. the rhizoids E. the zygotes
Which of the following can serve as antigens?
a. proteins b. carbohydrates c. nucleic acids d. proteins and carbohydrates e. proteins, carbohydrates and nucleic acids
Despite some evidence that antibiotic resistance can confer a fitness disadvantage to bacteria in nonantibiotic environments as compared to susceptible strains, research has also documented that ________
A) compensatory evolution by way of mutation events in other genes may very well make antibiotic resistant strains as fit, or even more fit, than sensitive strains B) an energy balance trade-off outweighs the advantages that antibiotic sensitive strains have otherwise C) strains sensitive to antibiotics will readily and spontaneously mutate at will to achieve antibiotic resistance, even in the absence of antibiotics D) None of the above.
Which of the following is associated with the lubrication of joints?
A) chondroitin sulfate B) lignins C) hyaluronate D) keratan sulfate E) pectins