Members of the ____ Ecdysozoan phylum, commonly called roundworms, are so plentiful in soil and other places that

they may be the most abundant animals on Earth.,



a. Arthropoda
b. Onychophora
c. Nemertea
d. Annelida
e. Nematoda


ANSWER: e

Biology & Microbiology

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________ is a strict anaerobe with an optimum growth temperature of 105 °C that grows chemolithotrophically on H2 with S0 as an electron receptor or chemoorganotrophically on complex mixtures of organic compounds

A) Pyrodictium B) Pyrolobus C) Pyrobaculum D) Desulfurococcus

Biology & Microbiology

________ stochasticity is the random variation in birth and death rates that occurs in populations from year to year as a result of natural disasters and other annual variations in the environment

Fill in the blank(s) with correct word

Biology & Microbiology

A receptor on the cell surface usually has several domains. The function of the external domain is:

a. transmitting the signal to the inside of the cell. b. holding the receptor within the membrane. c. attaching the receptor to the DNA. d. functioning as an enzyme. e. binding the signaling molecule.

Biology & Microbiology

Hemophilia is a genetic clotting disorder.

Answer the following statement true (T) or false (F)

Biology & Microbiology