List and briefly explain the organization of life, beginning at the molecular level and continuing through the biosphere
What will be an ideal response?
Molecules exist in the cell, which is the basic unit of life, and cells can be arranged to form tissues, which in turn can form organs. Organs can be arranged into organ systems that carry out a particular physiological function. Cells, tissues, organs, and organ systems make up an individual organism. A group of individuals of the same species in a given area form a population. Many populations in an ecosystem make up a community, and all living organisms and abiotic factors that support life on Earth form the biosphere.
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Using a biological or scientific dictionary, or a reference in your textbook, determine the meaning of the root word psilo, and relate it to the appearance of Psilotum.
What will be an ideal response?
Which of the following is the correct order of the three lines of defense against pathogens?
a. barriers that exclude pathogens ? adaptive immunity ? innate immunity b. barriers that exclude pathogens ? innate immunity ? adaptive immunity c. innate immunity ? adaptive immunity ? barriers that exclude pathogens d. adaptive immunity ? barriers that exclude pathogens ? innate immunity e. adaptive immunity ? innate immunity ? barriers that exclude pathogens
________ is directional growth responses of plants to a unidirectional source of light.
A. Phototropism B. Thermotropism C. Dormancy D. Thigmotropism E. Gravitropism
Which of the following would be most effective and practical for routine home disinfection of a toothbrush between uses?
A. Hydrogen peroxide B. 70% Isopropyl alcohol C. Bleach D. Glutaraldehyde