Cardiac muscle cells are connected by special junctions called intercalated discs. Intercalated discs provide strength between cells of tissues which exhibit high mechanical stress, strong flexible connections between tissue cells, and electrical excitability between the cells. Using this information, which junctions are present in intercalated discs?
A. Tight, plasmodesmata, and adherens
B. Tight, plasmodesmata, and desmosomes
C. Gap, adherens, and desmosomes
D. Gap, desmosomes, and hemidesmosomes
E. Adherens, tight, and gap
C
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What idea did Malthus champion that Darwin
incorporated into his theory of evolution?
a. Populations have the capacity to produce more offspring than the environment can support. b. Populations will always produce more individuals than the environment can support. c. Populations will only produce the number of individuals that the environment can support. d. Populations will never produce offspring in stressful environments. e. None of these are ideas of Malthus that Darwin incorporated into his theory of evolution
The type of connective tissue which stores fats and provides insulation is called
A. adipose. B. bone. C. cartilage. D. dense connective. E. blood.
The bubonic plague epidemic that swept through Europe between 1348 and 1350 A.D. was induced by a(n)
A) virus. B) prion. C) protozoan. D) bacterium. E) unidentified eukaryotic organism.
According to your text, the techniques of egg retrieval, in vitro fertilization, and gamete intrafallopian transfer
a. make it possible for two different women to each make a biological contribution to the creation of a new life
b. enable a woman to deliver multiple babies simultaneously.
c. will eventually make abortion obsolete.
d. make it possible for a woman to have a child without fertilization by male sperm.