Answer the following questions true (T) or false (F)
1. Except for the period during which the bubonic plague occurred, the human population demonstrated logistic growth from the Middle Ages until about 50 years ago.
2. The total fertility rate is defined as the average number of children born to each woman in a population.
3. Per capita use of resources and CO2 emissions may be just as important as population size when considering stress to the global environment.
1. FALSE
2. TRUE
3. TRUE
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________ from Streptomyces spp. binds to the sterols in fungal membranes, disrupting membrane permeability and causing leakage of cell constituents.
Fill in the blank(s) with the appropriate word(s).
Some protobionts have been shown to have the ALL of following features except
a. divide by binary fission. b. maintain a chemical environment different from their external environment. c. metabolize certain compounds. d. grow in size. e. disorganization
Which of the following will occur when a plant is placed into a hypotonic solution?
A. It will wilt. B. Some of its cells will burst. C. Turgor prevents more water from entering the cells. D. Water is actively pumped out of the cells. E. Elastic fibers in the cell walls enable plant cells to stretch and accommodate more water.
Cells are composed of chemicals and both the structure and function of cells are regulated by the basic principles of chemistry
Indicate whether the statement is true or false.