Based on the theory of endosymbiosis, which of the following would you expect to find in a chloroplast?
A. DNA
B. cellulose
C. a mitochondrion
D. silica
E. a nucleus
A. DNA
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The observation that most pureblood Native Americans have type O blood is best explained by _____
A. gene flow. B. assortative mating. C. genetic drift. D. a founder effect. E. frequent mutations.
If you were to compare the resting potential of a neuron to a battery, which way is the battery oriented?
A typical AA battery has a potential of 1.5V. One can think of the potential in a neuron as having similarities to that of a battery. A. positive terminal outside of the cell, and negative terminal inside B. positive terminal inside of the cell, and negative terminal outside C. positive terminal pointing toward the axon, negative terminal toward the dendrite D. positive terminal pointing toward the dendrite, negative terminal toward the axon E. both terminals inside the cell soma
The __________ is a circular molecule of DNA that
resides in a region of cytoplasm called the __________. Fill in the blank(s) with the appropriate word(s).
Which term refers to a bacterial protein that causes disease only after the cell has been disrupted?
a. endospore b. heterocyst c. endotoxin d. exotoxin