What challenges does respiration in water present? Check all that apply.
_____ The density of water is very high relative to air.
_____ Water holds approximately 30 times less oxygen when compared to air.
_____ Water requires an additional energy expenditure to move across epithelial surfaces.
_____ Water moving across respiratory surfaces removes heat from the animal.
_____ Water breathing animals have a high risk of desiccation.
__X__ The density of water is very high relative to air.
__X__ Water holds approximately 30 times less oxygen when compared to air.
__X__ Water requires an additional energy expenditure to move across epithelial surfaces.
__X__ Water moving across respiratory surfaces removes heat from the animal.
_____ Water breathing animals have a high risk of desiccation.
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Which of the examples below provides evidence of plant trade-offs?
A. Plants from nutrient-rich habitats grow large and have few defensive compounds. B. Plants growing in nutrient-poor soils do not invest heavily in defense because they do not have the resources. C. Plants grown in a rocky habitat are smaller. D. Plants growing in a nutrient-rich habitat do not produce many defensive compounds in their leaves.
What is the electron transfer chain? a. Series of enzyme-mediated reactions
b. Mechanism in which a change can result in a decrease of an activity. c. Reaction in which one molecule will accept the electrons. d. Region on an enzyme that regulatory molecules will bind to. e. Array of enzymes that accept and give up electrons in sequence and release energy.
What is partial pressure a measure of?
A.) the amount of a gas (that is part of a mixture) dissolved in a liquid B.) the total atmospheric pressure C.) the total amount of air entering the lungs D.) the relative sizes of the gas molecules
Why is aseptic technique important?
A) To protect others B) To protect yourself C) All of these choices are correct D) To protect your cultures