You discover a rare new bird species, but you are unable to observe its mating behavior. You see that the male is large and ornamental compared with the female. On this basis, you can probably conclude that the species is

#Question id: 28400

#Unit 5. Developmental Biology

Which of the following is the major candidate for the factor that forms the Nieuwkoop center ? 

#Question id: 28682

#Unit 2. Cellular Organization

When kinetochore can attach to microtubules emanating from both poles at the same time is referred to as____

#Question id: 12031

#Unit 7. System Physiology – Animal

#Question id: 10905

#Unit 6. System Physiology – Plant

The rate of movement of materials in the sieve elements can be expressed in two ways: as velocity, or as mass transfer rate. In early publications reporting on rates of transport in the phloem, what is the velocity and the mass transfer rate?

i) velocity-centimeters per hour (cm h^-1) and mass transfer- grams per hour per square centimeter (g h^-1 cm^-2)

ii) velocity-the linear distance traveled per unit time and mass transfer rate-the quantity of material passing through a given cross section of phloem or sieve elements per unit time.

iii) velocity- the quantity of material passing through a given cross section of phloem or sieve elements per unit time and mass transfer rate- the linear distance traveled per unit time

iv) velocity- per hour per square centimeter (h^-1 cm^-2) and mass transfer- kg centimeters per hour (cm h^-1)

#Question id: 2146

#Unit 2. Cellular Organization

In one catalytic cycle, the Na+/K+ ATPase transporter transports: