Which statement is true?
a. Phyla names based on morphology have been retired.
b. All Ecdysozoa have been reclassified as Lophotrochozoa.
c. Eumetazoa contains the clades Bilateria and Radiata.
d. Molecular data indicate sponges are unrelated to metazoa.
c. Eumetazoa contains the clades Bilateria and Radiata.
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Which of the cell adhesion molecules is critical to transducing changes in the ECM to a change in the cell?
A. connexins B. cadherins C. integrins D. fibronectins E. claudins
Match the essential nutrient category with the probable effects a deficiency might cause.
1. Muscle loss, weakened immune system. 2. Hair loss, dry skin. 3. Muscle weakness, weight loss. a. Fats b. Carbohydrates c. Proteins
The vagina meets the uterus at the ________
Fill in the blank(s) with correct word
Polar bears are top predators, and tests on their tissues have shown a surprising ____.
A. resistance to warming B. amount of protein C. resistance to disease D. amount of mercury and organic pesticides E. amount of nutrients