Which two components of the endomembrane system share continuous membranes?
a. plasma membrane and Golgi apparatus
b. endoplasmic reticulum and lysosomes
c. nuclear membrane and endoplasmic reticulum
d. Golgi apparatus and plasma membrane
c. nuclear membrane and endoplasmic reticulum
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________ pathways are those that function both catabolically and anabolically.
Fill in the blank(s) with the appropriate word(s).
The biological specialty that deals with the reconstruction and study of phylogenies is called _________.
Fill in the blank(s) with the appropriate word(s).
During a lecture on adaptive evolution, your instructor is explaining how dark-colored moths were selected for during the Industrial Revolution in England, due to their better camouflage against soot-covered trees and buildings. One of the other students in the class interrupts the lecture to insist that this example does not support the theory of evolution because the genes for both light colored and dark colored moths already existed prior to the Industrial Revolution. What mistake has your classmate made?
a. The genes for dark colored moths were in fact created by natural selection during the Industrial Revolution. b. This example is entirely hypothetical; moths do not fossilize so there is no way to document their phenotypes in the past. c. Natural selection is intended to explain the change in frequency of existing alleles in a population over time. d. Your classmate raises an original point that certainly would not be a waste of the class’s time to argue about yet again.
Which method is often used to analyze proteins and nucleic acids by physical separation when estimating genetic variation in populations?
A) centrifugation B) fluorometry C) in situ hybridization D) electrophoresis E) absorption spectrophotometry