Which of the following molecules is not found in plants?
(a) cellulose
(b) lignin
(c) collagen
(d) pectin
(c)
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Examine Figure 41.1. As water flows into the region with high solute concentration, it exerts an opposing force called ____ pressure, which eventually prevents additional water from moving into the compartment, bringing the system into equilibrium
Fill in the blank with the appropriate word.
What would be the best approach to curbing excessive human population growth?
A. lowering birth rates through education and family planning B. a return to historical health care practices C. embracing traditional agricultural practices D. encouraging women to postpone children till after age 35
To be an effective antibiotic or chemotherapeutic agent, it is necessary
Select one: a. not to kill the human host or cause allergic reactions. b. to be able to kill a bacterial cell only. c. not to kill the human host or cause allergic reactions AND to be able to kill a bacterial cell only. d. to change the genome of the bacterial disease agent. e. to stop any universal living cell process.
Which of these is not a characteristic of saturated fats?
A) They are liquid at room temperature. B) Every carbon atom is attached to the maximum number of hydrogen atoms. C) Only single hydrocarbon bonds are present. D) They pack tightly together. E) They are found in meat and eggs