Plants are believed to have evolved from which group of algae?
a. diatoms
b. red algae
c. charophytes
d. dinoflagellates
e. cyanobacteria
c
You might also like to view...
With humans making up such a small percentage of life on Earth, which of the following represents the rationale behind spending a disproportionate amount of scientific research studying humans?
A. Humans are interested in learning how their own bodies function. B. Our role in the ecosystem needs to be understood in order to plan for our future. C. The more that is discovered about humans, the more likely it is that disease can be combatted. D. Humans are curious about their origins. E. All of the above are reasons for spending a disproportionate amount of scientific research studying humans.
You are studying a virus that spends long periods of time latent within a host’s cells but causes massive tissue damage during its active periods. You have found that the surface molecules of this virus mutate quite frequently, but the proteins it requires to reproduce are both unique to this virus and stable across infections. What type of treatment would you recommend for this virus?
a. live viral vaccine b. killed viral vaccine c. antiviral drugs d. chelation therapy
Germline engineering would
a. alter a cloned embryo's genetic makeup. b. replace defective genes. c. insert missing genes. d. modify damaged genes. e. all of these.
Why do women experience the symptoms of osteoporosis more acutely than men?
A) Women have less bone mass and produce less estrogen later in life; these factors accelerate calcium loss. B) Women have less muscle mass and don't exercise as much. C) Men don't produce estrogen, so they don't rely on it as much as women do. D) Men take in more calcium in their diet, so they can't get osteoporosis.