By measuring microtubule growth, you find that they grow at a rate of 3 μm/min (this number has been altered to make the following calculation easier). At this growth rate, approximately how many alpha/beta tubulin dimers (8 nm in length) are added to the ends of a microtubule each second (don't forget there are 13 protofilaments/microtubule)?

The term equestrian relates to which animal? bulls cows horses pigs

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.