Sperm mature in the________ .

________ links the thick filaments to the Z line.

A) Troponin B) Tropomyosin C) Titin D) Nebulin E) Myosin

Two outwardly dissimilar groups, the ____________ and the chordates, together with a few other small phyla, constitute the deuterostomes.  

Fill in the blank(s) with the appropriate word(s).

A linear depiction of energy flow in an ecosystem is:

a. a food web. b. a food chain. c. a trophic web. d. an ecological pyramid. e. a pyramid of numbers

Group B streptococci only causes disease in infants.

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