Mangrove forests replace salt marshes in subtropical and tropical systems
1.True
2.False
1
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A microbiologist obtained two pure isolated biological samples: one of a virus, and one of a viroid. The labels came off during a move from one lab to the next, however
The scientist felt she could distinguish between the two samples by analyzing for the presence of a single type of molecule. What type of molecule would she be looking for to differentiate between the two? A. DNA B. Protein C. Lipids D. RNA
The most sustainable method for limiting human population growth is ____
a. decreasing birth rate b. increasing carrying capacity c. decreasing competition d. increasing death rate
e. exploiting outer spaceIn humans, the sex of the offspring is determined by the
A) cytoplasm carried by the egg cell. B) sex chromosome carried by the egg cell. C) autosomes carried by the egg cell. D) sex chromosome carried by the sperm cell. E) autosomes carried by the sperm cell.
Which of the following describes a complete defense system?
A) antibodies of the adaptive humoral immune response and interferons B) antibodies of the adaptive humoral immune response and components of innate immunity C) phagocytosis only D) complement system only