Homo sapiens is the name of a species. Homo is the name of a genus. Hominidae is the name of a family. Primate is the name of an order. Mammal is the name of a:
a) class.
b) phylum.
c) variety.
d) kingdom.
e) None of the above is correct.
Ans: a) class.
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____ in angiosperms occurs when a sperm cell "fertilizes" a diploid (2n) cell within the future seed (eventually forming a triploid (3n) endosperm), and a second sperm fertilizes a haploid (1n) egg
Fill in the blank with the appropriate word.
Which of the following phrases is used to describe J. B. Lamarck's hypothesis of evolutionary change?
a. inheritance of ancestral identity b. inheritance of acquired characteristics c. natural selection d. survival of the fittest e. intelligent design
Media used for coliform enumeration include chemicals that change color depending on the enzymes present in the microbes, thereby allowing a count of total bacteria and total coliforms from a single plate. This type of medium is termed ________.
A. defined B. selective C. complex D. differential
Ureaplasma urealyticum generates an electrochemical gradient, despite the absence of an electron transport chain, by synthesizing urea from ammonia/ammonium to generate chemiosmotic potentials.
Answer the following statement true (T) or false (F)