The ultimate source of energy trapped during photosynthesis is
a. CO2.
b. H2O.
c. O2.
d. sunlight.
a
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Why are stem cells able to divide indefinitely?
What will be an ideal response?
A bowl of sugar water is very stable. In a cell, however, it is rapidly broken down into carbon dioxide and water, releasing stored energy. What is the best explanation for this observation?
A. Enzymes in the cell catalyze the breakdown of the glucose. B. Cells use energy to break down the glucose. C. Glucose is only broken down while dissolving into a watery solution, such as inside the cell. D. Glucose cannot be broken down outside of a cell. E. Glucose becomes more chemically reactive inside of a cell.
Which of the following statements accurately reflects the differences between Batesian mimicry and Müllerian mimicry?
A. In Batesian mimicry the model must behave differently than the mimic; in Müllerian mimicry they behave the same. B. In Batesian mimicry the model must be more dangerous than the mimic; in Müllerian mimicry they are both dangerous. C. Batesian mimicry does not differ from Müllerian mimicry. Two different scientists discovered these two types at the same time, and they disagreed on what to call it. D. Batesian mimicry differs from Müllerian mimicry in that they occur on different continents—Batesian on the North American and Müllerian on the European. E. Batesian mimicry involves invertebrates; Müllerian mimicry involves vertebrates.
An analysis of derived characters is used to generate a
a. family tree based on external appearance b. family tree based on DNA structure c. cladogram d. traditional classification system