You are called to investigate a lake in your home town, where the residents fear that a broken pipe from the local sewage treatment plant has turned the formerly pristine lake eutrophic
What three things would you measure, or observe, in the lake to determine whether it is eutrophic?
Possible options are decreased oxygen levels in deeper water, decreased water clarity, increased nitrogen levels, increased phosphate levels, increased levels of sewage bacteria, and increased algae growth.
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Concerning catabolism and anabolism,
A. they refer to reactions solely dealing with the metabolism of lipids. B. the intermediates of one serve as the reactants in the other. C. the energy gathered in one is utilized in the other. D. they refer solely to the reactions involved in synthesis of carbohydrates. E. the intermediates of one serve as the reactants in the other AND the energy gathered in one is utilized in the other.
Neonatal meningitis is most commonly transmitted by ________.
A. exposure in the birth canal B. transplacental infection C. breastfeeding D. exposure from other infants E. hospital personnel
When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as ________
A) tetanus B) twitch C) fatigue D) summation
Active transport is transport
a. in an energetically unfavorable direction always driven by hydrolysis of ATP. b. in an energetically unfavorable direction always coupled to another reaction or source of energy. c. in an energetically unfavorable direction driven only by the flow of another molecule across a membrane. d. in an energetically favorable direction coupled to the hydrolysis of ATP.