What is the large muscular organ inferior to the lungs that facilitates breathing?

a. trachea
b. diaphragm
c. bronchioles
d. alveoli


b. diaphragm

Biology & Microbiology

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Vertebrate bone does NOT ____.  

A.  contain blood vessels B.  contain sarcomere units C.  contain hydroxyapatite crystals D.  become remodeled with use E.  consist of cells and an extracellular matrix containing collagen fibers

Biology & Microbiology

How many nucleotides in the human genome

sequence change every decade?

a. 40 b. 50 c. 60 d. 70 e. 80

Biology & Microbiology

Which of the following is a function of a tRNA molecule?

A) recognizing the appropriate anticodons in mRNA B) transferring nucleotides to rRNA C) helping to translate codons into nucleic acids D) joining to only one specific type of amino acid

Biology & Microbiology

Flowers, fruits, and endosperm are defining characteristics of the angiosperms.

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

Biology & Microbiology