Which one of the following endocrine system statements is INCORRECT?Question 19Select one:a.All cells produce Steroid hormones using cholesterol as a precursor molecule. b.Signal amplification is achieved through the use of second messenger signalling pathways and means that cells do not need to express a large amount of receptors for a hormone to cause a large effect in the cell. c.Chaperone molecules do not enter the nucleus of the cell. d.Agonists activate receptor signalling pathways within a cell. e.Up-regulation of receptors allows cells to enhance their sensitivity to a ligand.

QUESTION 1Endocrine products are initially secreted into __________. A. glands B. ducts C. the bloodstream D. synaptic clef1 points   QUESTION 2Using anatomical terminology, which gland is most superior to the others? A. The adrenal gland B. The thymus C. The thyroid gland D. The pancreas1 points   QUESTION 3How do hormones in the endocrine system move around the body? a. via the nervous system  b. via the circulatory system  c. via the lymphatic vessels  d. through ducts at target sites 1 points   QUESTION 4The ovaries produce progesterone. True False1 points   QUESTION 5Some hormones are regulated by a negative feedback mechanism while others are regulated by a positive feedback mechanism.Which of the following operate on a negative feedback mechanism and positive feedback mechanism respectively? A. oxytocin : insulin B. insulin : oxytocin C. prolactin : glucagon D. glucagon : prolactin 1 points   QUESTION 6If a person has too few or defectivelymphocytes, which gland might be at fault? A. thymus B. adrenal  C. pineal  D. thyroid1 points   QUESTION 7Inhibitory and releasing hormones are produced by the hypothalamus and function to control the __________. A. hypophysis B. pituitary  C. neurohypophysis D. adenohypophysis1 points   QUESTION 8The endocrine system has a slower response time than the nervous system. True False1 points   QUESTION 9Lipase (enzyme) degrades which group of compounds?  a. lipids  b. carbohydrates  c. proteins d. None of the product as listed 1 points   QUESTION 10The pancreas is considered to be an organ of the digestive and the endocrine system. True False1 points   QUESTION 11At what pH range is gastric acid maintained? a. pH 5 to pH 8 b. pH 7 c. pH 1 to pH 3 d. pH 8 to pH 111 points   QUESTION 12Which of the following is NOT a product of fat digestion? a. fatty acids  b. peptides  c. glycerol  d. All of molecules listed 1 points   QUESTION 13After the immediate stores of ATP in the body are used up, energy is supplied by the anaerobic (lactic acid) energy system and the aerobic system.Which one yields more ATP per molecule of glucose? anaerobic (lactate) system. aerobic system. both systems yield the same amount of ATP neither system yields much ATP1 points   QUESTION 14What substance builds up in muscle during anaerobic exercise?  a. oxygen  b. lactic acid c. glucose  d. carbon dioxide1 points   QUESTION 15The gallbladder releases which substance? a. chyme b. Hydrochloride acid  c. saliva d. bile1 points   QUESTION 16The liver is the largest internal organ inside the human body, weighing around 1.5kg in the average adult. True False1 points   QUESTION 17During periods of low hydration, urine would be _______? more dilute at a normal concentration more concentrated at pH 71 points   QUESTION 18The trigone is an area located within the _____________. A. Renal Pelvis area B. Urethra C. Kidneys D. Urinary bladder1 points   QUESTION 19How many ureters are present? A. 1 B. 2 C. 3 D. 41 points   QUESTION 20Micturition is __________. A. urination  B. the secretion of acid C. the production of urine D. present only in males

Which statement is accurate?(A) Hormones that differ in effect reach their target cells bydifferent routes through the body.(B) Pairs of hormones that have the same effect are said tohave antagonistic functions.(C) Hormones are often regulated through feedback loops.(D) Hormones of the same chemical class usually have thesame function

Which one of the following statements is INCORRECT? Question 9Select one:a.The regulatory units of PKA bind cyclic AMP and are released from the PKA complex to phosphorylate downstream signalling molecules.b.Protein kinase A (PKA) contains regulatory and catalytic sub-units.c.Peptide hormones cannot diffuse through the cell membrane.d.Heat shock proteins are chaperone molecules that complex with cytoplasmic steroid hormone receptors.   e.Steroid hormones are synthesised from cholesterol that is largely (80%) transported from the liver and enters target cells following Apo B-100 activation of LDL receptors.

Which of the following are influenced by the endocrine system?

Steroid hormones exert their action by _______.Question 18Select one:a.entering the nucleus of a cell and initiating or altering the expression of a geneb.finding an appropriate cell receptor and initiating cAMP activityc.stimulating the synthesis of a glycogend.increasing blood flowe.increasing blood pressure