________ provide motility to a sperm cell, ________ act as sensory "antennae" in many cells, and ________ increase a cell's surface area.
A. Microvilli; cilia; flagella
B. Microvilli; flagella; cilia
C. Flagella; microvilli; cilia
D. Flagella; cilia; microvilli
E. Cilia; microvilli; flagella
Answer: D
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All of the enzymes that digest protein are
A. activated by HCl. B. stimulated by enterokinase. C. secreted by the pancreas. D. secreted in an inactive form.
Creatine phosphate functions in the muscle cell by ________
A) forming a temporary chemical compound with myosin B) forming a chemical compound with actin C) storing energy that will be transferred to ADP to resynthesize ATP D) inducing a conformational change in the myofilaments
Location of the Nasopharynx
What will be an ideal response?
When during human development does the process of ossification begin?
A. 10-25 years of age B. 3-4 months of age C. 12 weeks after birth D. 8th-9th month of fetal development E. 12th-13th week of embryonic development