Which of the following is the most numerous phylum on Earth?

a) Actinopterygii
b) Chordata
c) Platyhelminthes
d) Arthropoda
e) Annelida


Answer: d) Arthropoda

Biology & Microbiology

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Ribosomes consist of ________ separate subunits that come together as part of the initiation process and dissociate immediately after termination.

A. four B. five C. two D. three

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Free energy change is a measure of the rate of reaction.

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

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When species-specific MHC proteins on xenotransplants trigger a complement-mediated rejection in the recipient, a(n) ____________________ results

Fill in the blank(s) with correct word

Biology & Microbiology

What are homologous traits?

a. characteristics that are similar in two species because they inherited the genetic basis of the trait from their common ancestor b. characteristics that are different in two species because they inherited the genetic basis of the trait from a different ancestor c. characteristics that are similar in two species because they are used for the same function d. characteristics that are similar in two species because two species look similar

Biology & Microbiology