How many chromosomes should be in a megasporangium nucleus?
A) 8
B) 16
C) 24
D) 32
B
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You have decided to repeat Palade’s experiments on the endomembrane system. You think you’ve done everything correctly, but when you observe your final sample under the microscope, you find that the entire endomembrane system contains tiny black dots. When you look at later timepoints you see the same thing. What part of the experiment did you forget?
A. You forgot to add radioactive amino acids. B. You forgot to add osmium tetraoxide. C. You forgot to add nonradioactive amino acids. D. You forgot to add the silver-containing emulsion. E. You didn’t forget anything, this is what the experiment is supposed to look like.
Which answer correctly matches a muscle characteristic with the appropriate muscle type?
a. rapid contraction rates, smooth muscle b. transverse striping, smooth muscle c. centrally positioned nucleus, skeletal muscle d. branched cells, cardiac muscle
Using tariffs to support diversification of a nation’s industrial structure
a. has little application to developing countries. b. is based on the need to protect high domestic wages. c. is based on the need to make the economy less vulnerable to demand fluctuations for its products. d. is designed to encourage specialization by the nation’s producers in just one or a few goods.
Which is the predominant second messenger involved in regulating glucose metabolism?
a. insulin b. glucagon c. adenyl cyclase d. cyclic AMP e. G protein