#Question id: 28832
#Unit 2. Cellular Organization
Most microtubules in a cell consist of a simple tube, a singlet microtubule, built from____
#Question id: 1567
#Unit 4. Cell Communication and Cell Signaling
Which of the following cell types are responsible for initiating a secondary immune response?
#Question id: 10653
#Unit 10. Ecological Principles
All offspring are produced in a single reproductive event, we term this pattern semelparity. Which of the following is characteristics feature for semelparity individuals?
a) Semelparity is common in insects and other invertebrates
b) Semelparous organisms may live for many years before reproducing
c) semelparity occur only in plant
d) In semelparity, exploitation competition is more common than interference competition
#Question id: 3315
#Unit 11. Evolution and Behavior
Which one of the following statements is TRUE for Negative-frequency dependent selection?
#Question id: 12435
#Unit 10. Ecological Principles
A diagram of a food web, for the following questions. (Arrows represent energy flow and letters represent species.)
In general, the total biomass in a terrestrial ecosystem will be greatest for which trophic level?