Are all species introductions the fault of humans? What will be an ideal response?
ANSWER: No, species introductions can happen by a number of ways. Seeds can travel on migratory
animals, mature organisms can travel across bodies of water, and at a slower pace the
continental drifts can move species. That being said, humans have accelerated the pace of
species introductions to an alarming rate due to our ability to travel long distances very
rapidly.
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A pathway for cell growth control is conserved between Drosophila and humans, indicating that the pathway is ____
a. also found in prokaryotes b. also found in all animals c. at least 800 million years old d. at least 3.8 billion years old e. at least 8 million years old
How many ATP form in the third stage of
aerobic respiration?
a. 4 b. 16 c. 23 d. 32 e. 36
The simple food chain: grass ? zebra ? lion can be represented by ____ pyramid(s)
a. an energy b. a height c. a biomass d. energy and height e. energy and biomass
Select all of the characteristics that optimize immunogenicity of an antigen.
A. They are molecules of complex composition, such as proteins or protein-containing compounds. B. They are molecules of simple composition. C. They are composed of a single type of subunit. D. Their molecular weight is less than 1,000. E. They are repetitious polymers.