Compared with a eukaryotic cell, a prokaryotic cell ______.
a) is not living
b) is larger
c) lacks organelles
d) has no method of movement
Ans: c) lacks organelles
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Which of the following is NOT an example of sensory adaptation?
a. a loss of the sense of pressure of clothes against the skin b. adjustment to repeated jumping into a body of cold water c. response to lack of oxygen at high altitudes d. eventual loss of awareness of a constant noise e. the loss of the ability to smell a person's perfume or cologne after being in that person's presence for some time
Mendeleev found that when he arranged the known elements according to their atomic mass, the entries in the table exhibited a pattern of chemical properties that repeated itself in groups of eight elements. This led to the generalization now known as:
A. an atomic model. B. the periodic table. C. valance electrons. D. the octet rule.
Diseases present in the population at a low frequency
A. Zoonotic B. Endemic C. pandemic D. Epidemic E. Morbidity
Gene flow ____.
A. has a stabilizing influence on allele frequencies between two populations B. speeds up the divergence of two populations C. increases divergence between populations D. is promoted by isolating mechanisms E. promotes inbreeding