Which of the following applies to bicarbonate in seawater?
1.acts as a buffer
2.formed from solution of CO2
3.helps maintain a stable environment for marine organisms
4.all of these
4
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Which of the following correctly lists components of extracellular matrix found in plants?
A. collagen, laminin, and elastin B. collagen, lignin, laminin, and pectin C. lignin, pectin, and keratin D. cellulose, pectin, lignin
Answer the following statements true (T) or false (F)
1.The term abiotic means "nonliving." 2.The reliance of a plant on one type of insect for pollination and that insect having only the nectar of that plant as its food source is an example of coevolution. 3.Resource partitioning allows only a single species to use a resource. 4.Parasitism is a symbiotic relationship in which neither member of the relationship benefits. 5.An example of a keystone species is a root-associated fungus that conifer trees need in order to survive and that supply food for rodents.
The process by which cells degrade their own components by enclosure in a membrane derived from the ER is termed
a. autophagy. b. ER-mediated endocytosis. c. phagocytosis. d. pinocytosis.
Which of the following is a true statement regarding species diversity and taxonomic diversity?
A) Species diversity measures the relative frequency of all alleles present in a species. B) In taxonomic diversity, the evolutionary relationships of species in a lineage are important. C) In species diversity, the number of animals in a particular lineage is important. D) The variety of species in a given area represents taxonomic diversity.