A __________ is a confined fluid upon which
muscle contractions act. Fill in the blank(s) with the appropriate word(s).
Answer: hydrostatic skeleton
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The gene sequence of the p53 protein illustrates
A. near complete dissimilarity of gene sequence between organisms yet shows a similarity in function for a protein. B. greater similarity within closely related groups, but differences from other groups. C. evolutionary relatedness of primates, other mammals, birds, and fish. D. greater similarity within closely related groups, but differences from other groups and evolutionary relatedness of primates, other mammals, birds, and fish are correct. E. no connection between any of the nine animals and their p53 gene sequence.
Chlorophyll molecules are embedded in the membranes of the ________
Fill in the blank(s) with the appropriate word(s).
Which of the following describe a growth form of lichens?
A. crustose B. fruticose C. foliose D. all of the choices provided E. none of the choices provided
thymus has the _____ rate of cell production in the body, but only ____% of all lymphocytes entering the thymus survive to becoming circulating T-cells
Fill in the blank(s) with the appropriate word(s).