Which pair of terms most accurately describes life history traits for a stable population of wolves?
A) Semelparous; r-selected
B) Semelparous; K-selected
C) Iteroparous; r-selected
D) Iteroparous; K-selected
E) Iteroparous; N-selected
Answer: D) Iteroparous; K-selected
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How are animals involved in the life cycle of plants?
A. seed dispersers B. seed dispersers and germinators C. seed germinators D. pollinators and seed dispersers E. pollinators
A microbiology student sampled a drinking fountain and observed small round colonies growing on his nutrient agar after incubating the plate for 48 hours. He made a slide from one of the colonies growing on the plate. He looked at the slide under the light microscope and noticed that none of the cells had nuclei. Based on this information, what can he determine concerning the colonies growing on his plate?
A) They are bacterial colonies B) They are fungal colonies C) Without staining, there is not enough information to make any determinations
In a chemical reaction, the standard free energy change (?G°') is calculated to be 3.67 cal/mol. What can be said of the chemical reaction?
A) The reaction is at equilibrium under standard conditions. B) The reaction goes spontaneously to the right under standard conditions. C) The reaction is not spontaneous under standard conditions. D) Products predominate over reactants at equilibrium under standard conditions. E) There can be no reaction.
Match the second messenger on the left with the properties on the right
A) opens calcium ion channels B) activates protein kinase C C) binds to calmodulin D) glucose mobilization E) smooth muscle relaxation 1) cAMP 2) IP3 3) DAG 4) calcium 5) cGMP