The cytosol and cytoplasmic organelles are components of the ________.
A. cytoplasm
B. mitochondria
C. cytoskeleton
D. nucleus
E. plasma membrane
Answer: A
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This protein is activated by the Ca2+-calmodulin complex to phosphorylate the myosin light chain protein.
A) myosin heavy chain B) myosin light chain kinase C) myosin light chain phosphatase D) tropomyosin
The epidermis
A. is composed of loose connective tissue. B. is made up mostly of melanocytes. C. is composed of the reticular and papillary layers. D. is thicker than the dermis. E. contains no blood vessels.
In fetal circulation, blood bypasses the lungs by flowing through the ________
A) ligamentum venosum and ligamentum arteriosum B) fossa ovalis and umbilical arteries and vein C) foramen ovale and ductus arteriosus D) ductus venosus and ductus arteriosus E) umbilical vein and umbilical arteries
Sperm are produced in the:
A) testes B) epididymis C) vas deferens D) scrotum