Four of the five statements listed below apply to the types of ecological pyramids. Which one is FALSE?
a. A pyramid of numbers has the greatest number of organisms at the top.
b. A pyramid of energy shows that energy increases as one goes toward the apex of the pyramid.
c. A pyramid of biomass cannot be inverted.
d. The base of all ecological pyramids is equal in size to the top.
e. The pyramid of biomass show actual biomass reduction from one trophic level to the next.
e
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Which scientific objective is LEAST related to microbial genetics?
A) determining the ancestral origin of a recently discovered bacterium B) identifying mutations in a bacterial population C) identifying quorum sensing interactions among bacteria D) manipulating a microorganism for bioremediation
Most organs respond to _____ and _____
a. hormones; physical stimulation b. environmental signals; hormones c. hormones; neuronal signals d. environmental signals; neuronal signals e. physical stimulation; neuronal signals
A diploid individual with two non-identical alleles for a particular gene is said to be
a) homozygous for that gene b) homozygous for every gene c) heterozygous for that gene d) sex-linked dominant e) heterozygous for every gene
Carbon, which has four electrons in its outer shell ( with a capacity of eight electrons), can form a maximum of how many covalent bonds with other atoms?
A.) 8 B.) 2 C.) 0 D.) 4