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107 Cards in this Set
- Front
- Back
metabolism is best described as |
synthesis of macromolecules breakdown of macromolecules and control of enzyme activity |
|
the most important outcome of cellular respiration is |
ATP energy water heat |
|
ATP is where |
chemical energy is stored in living cells. |
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A person becomes hungry after he has not eaten for a time because of |
low glucose levels detected by neurons in hypothalamus |
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uncontrolled ketoisis ultimately will result in |
acidosis lower blood ph inhibits nervous system leads to comma or death |
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ammonia produced by deamination is converted by the liver into less toxic substance called |
urea |
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which of the following produces most heat |
catabolism |
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the principal result of glucose metabolism is |
the production of ATP H20 Co2 |
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basal metabolic rate is a measurement of the body's energy needed when its at |
rest |
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the formation of glycogen from glucose is called |
glycogenesis |
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before fatty acids can be oxidized by means of the krebs cycle they must be converted into |
acetal coenzyme A |
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before fatty acids can be utilized as fuel they are degraded by beta oxidation to molecules of |
acetal coenzyme A |
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Excess protein taken into the body will be |
converted to fat by the liver |
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carbon dioxide plus ammonia forms |
urea |
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most biological oxidations are |
dehydrogenation |
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conversion of NAD1 to NADH and H1 is |
reduction when you add hydrogen to a molecule (breakdown catabolism) |
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the function of coenzyme A in glucose metabolism is |
carry 2 carbon molecules into kreb cycle |
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the primary significance of the krebs cycle in term of ATP production is |
transfer of energy from FADH and NADH take hydrogen out of the molecule |
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each molecule of acetyl coenzyme A that enters the krebs cycle produces how many molecules of carbon dioxide ? |
2 molecules of carbon dioxide |
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the end products of the compete aerobic oxidation of glucose are |
Co2 H2O ATP |
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which of the following processes requires oxygen |
electron transport system ,aerobic respiration in mitochondria |
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the most common carbohydrate fuel for living organism is |
glucose |
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enzymes of the krebs cycle and electron transport chain are located in the |
mitochondria or inner membrane |
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where glycolosis is carried out in the cell |
cytoplasm |
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which statement about catabolism is correct |
process of producing energy by oxidation of sugar ,breaking down large molecules to small,oxidation ,produces energy |
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which statement about anabolism is correct |
uses small molecules to synthesize larger ones. reduction ,needs energy |
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which statement about HDL is not correct |
produced by the liver, has high concentration of protein ,good cholesterol,prevents accumulation of cholesterol. TRANSFERS CHOLESTEROL FROM BLOOD TO LIVER TO CELLS |
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which statement about LDL is not correct |
produced by liver,low concentration of proteins,carries cholesterol from liver to tissue and organs, TRANSFERS CHOLESTEROL FROM BLOOD TO LIVER FOR ELIMINATION |
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which of the following is considered a key molecule of metabolic crossroad |
6 phosphate, 3 pirubic ,2 acetol coenzyme A |
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A process called deamination in the hepatocytes is involved in the catabolism of |
proteins |
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during the breakdown of glucose what are the net gain of ATP in anaerobic pathway |
2 glycolosis |
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during the break down of glucose what are the net gain of ATP in aerobic pathway |
36 glycerol phosphate 38 malate aspartate |
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how can energy be obtained from amino acids |
all have to be deaminated the 2 carboneal breakdown to make acetal CoA3 pyruvic acid from back bone |
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which statement about lipids being broken down is correct |
3 fatty acids , and 1 glycerol produce beta oxidation |
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what is glucogenesis |
synthesis of glycogen from amino acids/fatty acids |
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which statement is correct about regulation of absorptive phase |
insulin promoting liver cells to import glucose synthesis glycogen t3 and t4 promote to synthesize protein |
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which statement is correct about regulation of post-absorptive phase |
4-5 hours after eating blood sugar drops glucagon will increase , glucagon secreted epinephrine stimulates adipose |
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which is the factor that is involved in heat exchange with the environment |
radiation evaporation conduction convection |
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which of the following are characteristics of the kidney |
filters blood, supplied by the renal vein and drained by renal artery |
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the glomerular membrane differs from a typical capillary membrane in which of the following ways |
lots of tiny holes more permeable for water, |
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which of the following mechanisms if any exerts the greatest influence towards maintaining homeostasis of total fluid volume |
renal water re-absorbtion |
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in systemic hypotension ----is secreted asa result---will constric the efferent arterioles leading to increased blood pressure in the glomerulus |
renin ...angiotensin |
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whenever the plasma glucose concentration exceeds the renal threshold for glucose it will |
be excreted through urine synthesis of protein plasmas |
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place in order |
1.release of renin 2.conversion of angiotensinogen to angiotensin1 3.formation of angiotensin 2 from angiotensin1 4.release of aldosterone 5.sodium reabsorption from tubules |
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filtration in the glomerulus is due principally to |
hydrostatic pressure , glomeruli blood pressure |
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which of the following statements is not true |
retro peritoneum connects kidney to bladder |
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what effect does antidiuretic hormone have on the kidney |
reabsorption of more water |
|
aldosterone |
produced by the adrenal cortex, promotes renal tube reabsorption of Na+ decreases urine output |
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juxta glomerular cells would be stimulated to produce renin by |
sharp decrease in blood pressure |
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an increase in the amount of carbon dioxide in the blood will |
hydrogen ions increase ph will decrease |
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urination would be increased by |
diuretic hormones ,NAP, drinking lots of water |
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what would probably occur if prostate gland had a tumor in its central part. |
difficulty to urinate pressure in urethra constriction |
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consumption of alcohol increases urine production by |
inhibits ADH causing diuresis |
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when a substance in the renal tubules exceeds its threshold |
the amount of substance that exceeds will be found in the urine |
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anti-diuretic hormone is produced in the |
hypothalamus stored in the post pituitary gland |
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potassium secretion into the urine is controlled by |
aldosterone |
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after the bladder is stretched due to buildup of urine nerve impulses pass through the spinal cord to the hypothalamus via the |
lateral spinothalmic tract |
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because about 20% of the water in the glomeruli is filtered into the bowmans capsule the ----osmotic pressure of the blood entering the peritubular capillary bed is --- |
relative , increased |
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an abnormal constituent in the urine is |
red blood cells protein sugar |
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the kidneys control over NA+ excretion is monitored by a hormone called |
aldosterone |
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the amount of water lost or retained by the body is primarily regulated by |
ADH |
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Glomerular filtrate is similar to plasma in composition EXCEPT that the filtrate lacks significant amount of |
protein |
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when arteriole blood pressure decreases substantially the glomerular filtration rate |
decreases slightly |
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the kidneys help regulate the PH of body fluids by controlling the |
secretion of hydrogen ions |
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when excessive amounts of water are lost due to sweating or diarrhea |
dehydration body secretes ADH .renin secreted retain water. |
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ADH a hormone believed to be synthesized by neurons in the hypothalamus is released into the blood by the posterior pituitary gland and it |
accelerated water reabsorption in distal tubules |
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the epithelium of the glomerulus is composed of |
fenestrated endothelium |
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the ion that would have the greatest effect on water movement between body compartments is |
sodium |
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microvilli are in greatest quantity in the |
PCT |
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the inner(visceral) layer of a glomerular capsule is made of |
podocytes |
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the liquid which collects in the minor calices of the renal sinus is |
urine |
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which has as its main function the reabsorption of sodium chloride amino acids and about 80% of eventual water reabsorption |
PCT |
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the maintenance of relatively high blood pressure in the glomerulus is related to the fact that |
larger afferent arterioles, smaller efferent arterioles. |
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the hormone ADH functions by affecting what part of the kidney? |
DCT collecting duct |
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angiotensin 1 splits from angiotensinogen by the ezymatic action of |
renin |
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which of the following is not actively reabsorbed |
urea glucose or water |
|
the direction of water movement between fluid compartments is determined by |
concentration of solute by sodium |
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the primary means of water movement between fluid compartments is |
osmosis |
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the thirst center is stimulated by all of the following except |
peripheral chemoreceptorsm |
|
the primary determinant of body fluid volume is the |
number of sodium and chloride ions lost from kidneys |
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a decrease in angiotensin 2 leads to |
decreased blood pressure in renin |
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in studies of fluid balance the term water intoxication refers to |
cell swells and dies water moves from interstitial fluid into intracellular fluid by ions loss |
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ADH saves water by |
enhancing passive movement of water out of the collection duct |
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extracellular fluids are |
high concentration of sodium outside the cell low potassium |
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excessive intake or drinking of water normally leads to |
increase urination reduce ADH secretions |
|
levels of sodium ions in the extracellular fluid are regulated primarily |
aldosterone |
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levels of potassium ions in the extracellular fluid are regulated primarily by |
aldosterone |
|
the primary intracellular ions are |
potassium phosphate ions protein ions sulfur sulfate |
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protein anions are most abundant in |
inside of cell, plasma,interstitial fluid |
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when bicarbonate ions diffuses out of red blood cells into plasma it is usually exchanged with which anion |
hydrogen |
|
bicarbonate ion acts as a |
weak base |
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the carboxyl group of an amino acid acts as a buffer for |
weak acids hydrogen ions |
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hemoglobin picks up a hydrogen ion when |
releases oxygen to tissue |
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if the blood is acidic which one of the following would not occur |
increase respiration rate , lowers PH |
|
holding your breath for an extended period of time results in |
respirator acidosis |
|
in compensating for respiratory alkalosis the body excretes more |
bicarbonate ions |
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an increase in ADH leads to |
more water reabsorption insertion of aquaporin 2 channels into principle cell membranes |
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the inspiratory center in the medulla oblongata triggers more forceful and frequent contractions of the diaphragm if |
decrease in Co2 partial pressure increase. |
|
hydrogen ions are normally eliminated from the body by |
kidney or excretion in the urine |
|
a person who has not eaten for a week is probably |
low blood sugar breaking down fat and protein. generating ketone bodies excreting hydrogen ions generating bicarbonate ions breathing more rapidly |
|
increasing respiratory rate will |
result in an increase in exertion of excess bicarbonate ions in urine |
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uncontrolled diabetes mellitus may lead to metabolic acidosis because |
ketone bodies increase m increase rate of lipolysis and ketogenics occur |
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which of the following might trigger an increase in the rate of deamination of glutamine by renal tubule cells as a form of compensation for a pH imbalance |
pulmonary edema |
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the most abundant buffer intracellular fluid system is |
protein |
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use of laxatives in older people to relieve constipation often results in |
low potassium hypokalemia |
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edema may result from |
too much sodium not enough protein |
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the level of sodium ions in the blood is controlled by the homrones |
aldosterone ADP ADH |