Which of the following substances is released
by an endocrine gland?
a. mucus
b. hormones
c. saliva
d. milk
e. tears
B
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Match the following descriptions to their respective body parts. 7) Vertebrae in the lower back region just above the sacral region. _____ 8) Bones that form on either side of the cranium and are thought of as the temples. _____ 9) Produced from the fusion of five vertebrae and allows an individual to sit. _____ 10) Bone cells that break down bone tissue. _____ 11) Calcitonin stimulates the activity of these bone cells. _____ 12) During childbirth, hormones loosen its cartilage to allow the pelvis to widen. _____
A) Sacrum B) Metatarsals C) Carpals D) Foramen magnum E) Tarsals F) Femur G) Osteoblasts H) Temporal I) Lumbar J) Osteoclasts K) Pubic symphysis L) Humerus
biology, many complementary processes exist. Explain how condensation reactions are
complementary to hydrolysis reactions. What will be an ideal response?
Following its initial activation, how does a G protein become inactivated?
A. The G-protein, a subunit, is digested and recycled. B. It spontaneously loses activity within a few seconds. C. The G-protein, a subunit containing a GTP, eventually reassociates with the G-protein bg dimer. D. The G-protein, a subunit GTP, is hydrolyzed to GDP allowing reassociation of the G-protein a subunit and ?? dimer. E. The receptor becomes internalized.
By analyzing the chemical formulas, you can determine that this molecule, CH3CH(NH2)COOH, is a(n) ________, whereas the molecule C5H10O5 is a(n) ________
A) cholesterol; amino acid B) fatty acid; sugar C) nucleotide; glycerol D) amino acid; sugar