In all ecosystems, the biomass of primary producers is greater than the biomass of herbivores
Indicate whether the statement is true or false
FALSE
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The development and use of ____ ushered in the era of genomics when geneticists began planning ways to sequence the 3.2 billion nucleotides in the human genome
a. transmission genetics b. the electron microscope c. recombinant DNA technology d. cytogenetics e. karyotypes
Schwann cells produce a carbohydrate-like insulating material called myelin.
a. true b. false
Somites arise from
a. endoderm. b. mesoderm. c. ectoderm. d. gastroderm. e. placoderm.
If a person is bitten by a highly venomous snake and receives a dose of venom sufficient to kill several people, that person does not have the time to build up his immunity over the next week to neutralize the venom. However, hospitals carry "antivenin" made from injecting horses with small-to-larger dosages of snake venom, and then harvesting the antibodies from the horse plasma. This is an example of
A. passive immunity. B. receiving high levels of complement. C. receiving high levels of interferon. D. developing an inflammatory response to increase the IgG production. E. active immunity.