Question 30 ADH, when it reaches its target cell, increases which second messenger? O ADH acts through direct gene activation, not second messengers calcium ions O ADH acts through the RAAS mechanish, so no second messengers required CAMP

QUESTION 10 Which of the following is an example of positive feedback regulation in the body? A Blood clotting mechanism OB. Regulation of temperature OC. Regulation of heart rate OD Regulation of blood pressure

Question 66 When a cell membrane potential shifts from -70mV to -90mV we say the membrane has: O depolarized O repolarized O hyperpolarized O polarized A Moving to another question will save this response. 17 stv MacBook Air DII F2 F3 F4 F5 F6 F7 F8 @ %23 2$ へ 7 8 W R T Y D F C ンU) つ B LE # 3

QUESTION 32 Which of the following statements is not correct? AREA L CELLS A BLOOD AREA K VESSELS B 2 BLOOD VESSEL C BLOOD VESSELS D AREA M AREA E BLOOD CELLS J VESSELS F AREA G BLOOD VESSEL H AREA E is the neurohypophysis The hypothalamus is labeled AREA L Antidiuretic enters the blood at BLOOD VESSELS B AREA G is the anterior pituitary

Question 9 When would IGF-1 concentration in the blood stream be at its highest? O A. Immediately after a meal OB. In the absence of binding protein OC. When growth hormone concentration is at its lowest OD. During times of increased stress O E. At the peak of the pubertal growth spurt

Question 15 Which of the following is a consequence of glucocorticoid treatment for an extended period? O A. Reduced response to glucagon O B. Reduced response to ACTH C. Reduced IGF-1 synthesis O D. Inability to secret thyroid hormone O E. Hypoglycemia (low blood glucose)

Question 26 In most species (although not proven in humans), the protein FOX01: increases the expression of genes related to greater longevity O is deactivated by caloric restriction is activated by insulin signalling O all of the above

Which of the following is a function of the urinary system?  Adjusting blood volume by conserving or eliminating water clearing excess white blood cells into the urine excreting large proteins into the urine production of aldosterone secretion for glucose from the blood into filtrate

QUESTION 6 Which of the following correctly describes a second messenger? O A protein, such as a G-protein, that is switched 'on' upon ligand binding to receptor. O An enzyme that is activated upon ligand binding to receptor. An enzyme responsible for the cellular effects of a signal transduction pathway, like Protein Kinase A or Glycogen Phosphorylase. O None of the above QUESTION 7 As we learned in class, protein phosphatases catalyze removal of phosphate groups from proteins. How would the activity of a protein pho cell's response to growth factors? Decrease glucose production O Increase glucose production O Decrease proliferation Increase proliferation QUESTION 8 Which of the following reactions can we say is definitely energetically favorable, i.e. it can go without an input of energy? O One in which TAS > 0 One in which AS > 0 AOne in which AG<0

QUESTION 13 Compared to a hydrophilic messenger, a hydrophobic messenger is more likely to: bind to a receptor on the surface of its target cell O produce its effects more quickly O be carried in the blood by carrier proteins O none of the other choices QUESTION 14 Sodium ions are found: O only inside cells O both inside and outside cells, but they are more concentrated inside cells O both inside and outside cells, but they are more concentrated outside cells O only outside cells QUESTION 15 Compared to a neurotransmitter, the effects of a hormone are usually: O slower acting and shorter lasting O faster acting and shorter lasting O faster acting and longer lasting O slower acting and longer lasting