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TLS Online TPP Program

#Question id: 3458

Which of the following examples reflects the concept of optimal foraging?

#Unit 11. Evolution and Behavior

  1. During foraging, a mule deer will consume food as soon as it finds it, regardless of the location.

  2. A cheetah will continue a chase for prey, regardless of how long the chase lasts or how much energy is consumed.

  3. A moose spends more time looking for food when the food is high quality than when the food is low quality.

  4. If an animal is hungry it will consume food as soon as it is found, regardless of the food quality or the risk.

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TLS Online TPP Program

#Question id: 384

#Unit 1. Molecules and their Interaction Relevant to Biology

A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).
TLS Online TPP Program

#Question id: 385

#Unit 1. Molecules and their Interaction Relevant to Biology

In which reaction below does water not participate as a reactant (rather than as a product)?
TLS Online TPP Program

#Question id: 386

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following properties of water does not contribute to the fitness of the aqueous environment for living organisms?
TLS Online TPP Program

#Question id: 387

#Unit 1. Molecules and their Interaction Relevant to Biology

For a weak acid with a pKa of 6.0, What would be the ratio of acid to salt at pH 5.
TLS Online TPP Program

#Question id: 388

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the pH of a solution prepared by mixing 2.0 mL of a strong acid solution of pH=3.0 and 3.0 mL of a strong base of pH=10.0.
TLS Online TPP Program

#Question id: 389

#Unit 1. Molecules and their Interaction Relevant to Biology

A weak acid HA has a pKa of 5.0.  If 1.0 mol of this acid and 0.1 mol of NaOH were dissolved in one liter of water, what would the final pH be?