Opening all of the sodium channels on an otherwise typical neuron, with all other ion channels closed (which is an admittedly artificial setting), should move its membrane potential to ________.

#Question id: 10752

#10. Ecological Principles

Which of the following is an example of Batesian mimicry?

A) a butterfly that resembles a leaf

B) a nonvenomous larva of a moth that moves like a venomous snake

C) a fawn with fur coloring that camouflages it in the forest environment

D) a snapping turtle that uses its tongue to mimic a worm, thus attracting fish

#Question id: 10755

#10. Ecological Principles

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000          KB = 1200        α= .5    r A= .3    N1= 500         N2= 200          

According to the Lotka-Volterra model, what is growth rate of species A?

#Question id: 10757

#6. System Physiology – Plant

A Negative Hydrostatic Pressure in Soil Water,

#Question id: 10758

#6. System Physiology – Plant

The component of the soil water potential is hydrostatic pressure  (ψp) ,

#Question id: 10779

#6. System Physiology – Plant

As plants absorb water from the soil, they deplete the soil of water near the surface of the roots, This depletion due to

#Question id: 10810

#6. System Physiology – Plant

A mechanism for preventing sap loss entails closing sieve plate pores with callose, which is