What is the mechanism by which the glucose transporter SGLT-1 increases the ability of the small intestine to absorb glucose?
What will be an ideal response?
Answer: The SGLT-1 transporter serves as a glucose sensor that triggers a signaling pathway leading to the rapid synthesis of another glucose transporter, GLUT-2, and its intracellular transport to the microvilli.
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Which events occur during the recycling of aged or damaged erythrocytes? (Order is not important.)
a: The heme group is converted into biliverdin. b: Bilirubin is placed in long-term storage in the liver. c: The iron ions in hemoglobin are removed. d: The iron ions are stored in the liver. e: The iron ions are stored in the red bone marrow. f: Membrane proteins and globin proteins are broken down and reused. g: The erythrocyte contents, excluding the globins, are excreted unchanged via the digestive tract. A. a, b, c, e, f B. a, c, d, f C. a, b, c, g D. c, d, g E. c, e, g
In a crossed-extensor reflex, if the right arm was grabbed it would flex and the left arm would ________
A) abduct B) also flex C) extend D) adduct
The maximum osmolarity of urine is 1200 mOsm to 1400 mOsm.
a. true b. false
What type of red bone marrow cells can become any type of formed element?
A. Totipotent stem cells B. Multipotent stem cells C. Myeloid stem cells D. Lymphatic stem cells