The system of tubes and sacs that makes enzymes,
proteins and lipids is(are) the
a. Golgi bodies.
b. ribosomes.
c. vesicles.
d. lysosomes.
e. endoplasmic reticulum.
Answer: e
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What is the advantage of a fungal body being composed of numerous thin hyphae instead of one or two very thick hyphae?
A. A greater surface area is available for absorption of nutrients. B. Less energy is required to produce the hyphae. C. Better support is provided by numerous hyphae. D. More exposure to the sun allows for increased photosynthesis. E. All the answer options are correct.
In plants, the IP3/DAG pathways control the organism's responses to water loss and changes in light intensity
a. True b. False
Imagine that every person on Earth had an ecological footprint the size of an average Haitian person's ecological footprint. Which of the following is a potential result?
a. we would quickly run out of renewable and nonrenewable resources because we would have to use even more fossil fuel to support our energy demands b. we would exceed the biocapacity of Earth c. it would take the equivalent of about four Earths to support all of us d. our effect on Earth's resources would be at a much more sustainable level than it is currently e. a, b, and c are all potential results
Mutations
A) can be helpful, neutral, or harmful to individuals. B) limit the potential for evolution. C) arise due to environmental pressures. D) are caused by natural selection.