When a virus has an envelope,
A) it likely escapes its host cell by budding.
B) it likely escapes its host cell by lysis.
C) it may escape its host cell either by budding or by lysis.
D) it is always a bacteriophage.
E) it is always an RNA-containing virus.
Answer: A
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Nilsson-Ehle's studies of seed color in wheat were important because they showed that:
A. complex traits have a large environmental component. B. inbred strains can be used to study the environmental component of complex traits. C. complex traits are subject to Mendelian laws of inheritance. D. complex traits are not subject to Mendelian laws of inheritance. E. complex traits both have a large environmental component and are subject to Mendelian laws of inheritance.
Which structure is NOT part of the endomembrane system?
A) nuclear envelope B) chloroplast C) Golgi apparatus D) plasma membrane
The process by which elevated nutrient levels lead to an overgrowth of algae and the subsequent depletion of water oxygen levels is known as
A. assimilation B. decomposition. C. succession. D. biogeochemical cycling. E. eutrophication.
Which of the following statements about the nitrogen cycle is true?
A) The nitrogen cycle requires different types of bacteria. B) Nitrogen gas is converted to nitrates in plant leaves. C) Nitrogen cannot be cycled through living organisms. D) When plants and animals die, nitrogen is removed from the nitrogen cycle