Which of these organs is in the thoracic cavity?
a. Esophagus
b. trachea
c. thymus
d. all of these
Answer: d. all of these
Biology & Microbiology
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The separation of genes during the formation of the sperm and egg and the reunion of genes at fertilization is explained by the behavior of chromosomes in a form of cell division called meiosis
a. True b. False Indicate whether the statement is true or false
Biology & Microbiology
The part of the onion that we consume is actually
a. a taproot. b. fibrous roots. c. underground leaves. d. underground stems.
Biology & Microbiology
Which energy source fuels cell division in animal cells?
a. GTP b. ATP c. kinetic energy of Golgi body movement d. glycerol e. fat deposits
Biology & Microbiology
The oldest known fossils suggest that the ____ may have been the first plants to inhabit land
a. ferns b. mosses c. hornworts d. liverworts e. angiosperms
Biology & Microbiology