The folds of the inner membrane of a mitochondrion are called ____
a. lamellae
b. cisternae
c. processes
d. cristae
d
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Following an injury to his arm, a patient complains that he cannot extend the forearm, wrist, and digits. You suspect that he has damaged the
A. median nerve. B. radial nerve. C. musculocutaneous nerve. D. ulnar nerve. E. axillary nerve.
It is possible for cells to communicate directly (via a connection of the cytoplasm) with each other by using
A) Gap junctions. B) Paracrine signaling. C) Endocrine signaling. D) Autocrine signaling.
Which of the following statements is true?
A. Normal filtrate contains a large amount of protein. B. Most filtrate (99%) is eliminated as urine. C. Hormones play a minor role in fluid homeostasis. D. Sodium ions are secreted into the filtrate of the proximal convoluted tubule. E. Reabsorption of water in the filtrate may be hormonally controlled.
Membrane enclosed organelles containing oxidative enzymes that form hydrogen peroxide are ________.
A. lysosomes B. peroxisomes C. chromosomes D. centrosomes