Answer the following statements true (T) or false (F)
1. A dehydration reaction that builds larger molecules from smaller units requires the addition of a water molecule.
2. The hydroxyl (OH-) concentration of a solution with a pH of 8 would be 10-6 molar.
3. Most enzymes or bioactive molecules work effectively within a broad range of pH.
4. The presence of salt helps prevent oceans from freezing.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
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Interneurons are responsible for the distribution of sensory information and the coordination of motor activity. They are also involved with all higher functions, such as memory, planning, and learning. The more complex the response to a given stimulus, the greater the number of interneurons involved. Knowing this, what can you predict about the ratio of interneurons to sensory and motor neurons in the nervous system of higher animals?
A. There must be equal numbers of sensory neurons, motor neurons and interneurons. B. Since interneurons connect the other two types, it is necessary to have only half as many interneurons as motor and sensory neurons. C. Interneurons likely outnumber all other types of neurons combined. D. None of these choices are correct.
Some people say that China’s number one export is air pollution. This is because
a. large countries have a higher population, and therefore, more cars and machinery to produce pollutants. b. many countries do not have monitored emission standards. c. wind patterns bring smog from China to the West Coast of the United States. d. all of these
Cellular slime molds can be distinguished from plasmodial slime molds on the basis of ____
a. reproductive structures b. spore formation c. nuclei per cytoplasm d. slime trails e. food requirements
Uncollected solid waste contributes
What will be an ideal response?