Four of the five choices below are components
of the human lymphatic system. Select the
EXCEPTION.
a. spleen
b. pancreas
c. tonsils
d. lymph nodes
e. thymus
B
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Organisms that have their optimum growth pH between 8.5 and 11.5 are called ________.
Fill in the blank(s) with the appropriate word(s).
Around 1914, ________ determined that DNA was an important component in ________ by using a staining technique that is still in use today
Fill in the blank with correct word.
Which one type of cells is responsible for producing and releasing antibodies?
A) red bone marrow B) B lymphocytes C) T lymphocytes D) macrophages E) natural killer cells
After succession, a stable group of species that persists over long periods is referred to as a:
A) competitive population. B) population. C) coevolution group. D) climax community.