Naturally acquired passive immunity can result from the _____

A) injection of vaccine
B) ingestion of interferon
C) placental transfer of antibodies
D) absorption of pathogens through mucous membranes


C

Biology & Microbiology

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The living portion of the pathway through which water travels through a root is called the apoplastic pathway

a. True b. False

Biology & Microbiology

Which of the following lists best describes the features used to classify an organism as a member of domain Bacteria?

A. Unicellular, contains a nuclear envelope and membrane-bound organelles, contains ribosomes but lacks introns B. Multicellular, lacks a nuclear envelope and membrane-bound organelles, contains introns but lacks ribosomes C. Unicellular, lacks a nuclear envelope and membrane-bound organelles, contains introns but lacks ribosomes D. Unicellular, lacking a nuclear envelope and membrane-bound organelles, contains ribosomes but lacks introns

Biology & Microbiology

The first hominid to spread beyond Africa was ________

A) "Lucy" B) Australopithecus afarensis C) Homo erectus D) Homo neanderthalensis

Biology & Microbiology

The cell _____ can be composed of three layers: the membrane, the cell wall, and the outer membrane.

A. glycocalyx B. envelope C. pathogenic package D. slime coat E. None of the choices is correct.

Biology & Microbiology