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TLS Online TPP Program

#Question id: 9571

All homeostatic systems used by organisms to regulate body temperature are described by which of the following?

#Unit 10. Ecological Principles
  1. They are able to maintain internal temperatures within 5°C of the "set point”
  2. They use a negative feedback process to accomplish temperature regulation
  3. They are independent of any external source of energy
  4. They are dependent on external cues (such as day length) to activate the system
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TLS Online TPP Program

#Question id: 13202

#Unit 6. System Physiology – Plant

Which of the following sucrose-H+ symporter appear to be the major sucrose transporters in phloem loading into the companion cells;
TLS Online TPP Program

#Question id: 11385

#Unit 10. Ecological Principles

Which of the following biomes is correctly paired with the description of its climate?

A) savanna-low temperature, precipitation uniform during the year

B) tundra-long summers, mild winters

C) Taiga-relatively short growing season, Low precipitation

D) temperate grasslands-relatively warm winters, most rainfall in summer

E) tropical forests-nearly constant day length and temperature
TLS Online TPP Program

#Question id: 11966

#Unit 7. System Physiology – Animal

Stomach cells are moderately well adapted to the acidity and protein-digesting activities in the stomach by having ________.
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?
TLS Online TPP Program

#Question id: 18893

#Unit 13. Methods in Biology

In fluorescence microscopy, which of the following performs the function of removing all light except the blue light?