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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.

A person becomes hungry after he has not eaten for a time because of

low glucose levels detected by neurons in hypothalamus

uncontrolled ketoisis ultimately will result in

acidosis lower blood ph inhibits nervous system leads to comma or death

ammonia produced by deamination is converted by the liver into less toxic substance called

urea

which of the following produces most heat

catabolism

the principal result of glucose metabolism is

the production of ATP H20 Co2

basal metabolic rate is a measurement of the body's energy needed when its at

rest

the formation of glycogen from glucose is called

glycogenesis

before fatty acids can be oxidized by means of the krebs cycle they must be converted into

acetal coenzyme A

before fatty acids can be utilized as fuel they are degraded by beta oxidation to molecules of

acetal coenzyme A

Excess protein taken into the body will be

converted to fat by the liver

carbon dioxide plus ammonia forms

urea

most biological oxidations are

dehydrogenation

conversion of NAD1 to NADH and H1 is

reduction when you add hydrogen to a molecule (breakdown catabolism)

the function of coenzyme A in glucose metabolism is

carry 2 carbon molecules into kreb cycle

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

each molecule of acetyl coenzyme A that enters the krebs cycle produces how many molecules of carbon dioxide ?

2 molecules of carbon dioxide

the end products of the compete aerobic oxidation of glucose are

Co2 H2O ATP

which of the following processes requires oxygen

electron transport system ,aerobic respiration in mitochondria

the most common carbohydrate fuel for living organism is

glucose

enzymes of the krebs cycle and electron transport chain are located in the

mitochondria or inner membrane

where glycolosis is carried out in the cell

cytoplasm

which statement about catabolism is correct

process of producing energy by oxidation of sugar ,breaking down large molecules to small,oxidation ,produces energy

which statement about anabolism is correct

uses small molecules to synthesize larger ones. reduction ,needs energy

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

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

which of the following is considered a key molecule of metabolic crossroad

6 phosphate, 3 pirubic ,2 acetol coenzyme A

A process called deamination in the hepatocytes is involved in the catabolism of

proteins

during the breakdown of glucose what are the net gain of ATP in anaerobic pathway

2 glycolosis

during the break down of glucose what are the net gain of ATP in aerobic pathway

36 glycerol phosphate


38 malate aspartate

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

which statement about lipids being broken down is correct

3 fatty acids , and 1 glycerol produce beta oxidation

what is glucogenesis

synthesis of glycogen from amino acids/fatty acids

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

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

which is the factor that is involved in heat exchange with the environment

radiation evaporation conduction convection

which of the following are characteristics of the kidney

filters blood, supplied by the renal vein and drained by renal artery

the glomerular membrane differs from a typical capillary membrane in which of the following ways

lots of tiny holes more permeable for water,

which of the following mechanisms if any exerts the greatest influence towards maintaining homeostasis of total fluid volume

renal water re-absorbtion

in systemic hypotension ----is secreted asa result---will constric the efferent arterioles leading to increased blood pressure in the glomerulus

renin ...angiotensin

whenever the plasma glucose concentration exceeds the renal threshold for glucose it will

be excreted through urine synthesis of protein plasmas

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

filtration in the glomerulus is due principally to

hydrostatic pressure , glomeruli blood pressure

which of the following statements is not true

retro peritoneum connects kidney to bladder

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

juxta glomerular cells would be stimulated to produce renin by

sharp decrease in blood pressure

an increase in the amount of carbon dioxide in the blood will

hydrogen ions increase


ph will decrease



urination would be increased by

diuretic hormones ,NAP, drinking lots of water

what would probably occur if prostate gland had a tumor in its central part.

difficulty to urinate pressure in urethra constriction

consumption of alcohol increases urine production by

inhibits ADH causing diuresis

when a substance in the renal tubules exceeds its threshold

the amount of substance that exceeds will be found in the urine

anti-diuretic hormone is produced in the

hypothalamus stored in the post pituitary gland

potassium secretion into the urine is controlled by

aldosterone

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

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

an abnormal constituent in the urine is

red blood cells protein sugar

the kidneys control over NA+ excretion is monitored by a hormone called

aldosterone

the amount of water lost or retained by the body is primarily regulated by

ADH

Glomerular filtrate is similar to plasma in composition EXCEPT that the filtrate lacks significant amount of

protein

when arteriole blood pressure decreases substantially the glomerular filtration rate

decreases slightly

the kidneys help regulate the PH of body fluids by controlling the

secretion of hydrogen ions

when excessive amounts of water are lost due to sweating or diarrhea

dehydration body secretes ADH .renin secreted retain water.

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

the epithelium of the glomerulus is composed of

fenestrated endothelium

the ion that would have the greatest effect on water movement between body compartments is

sodium

microvilli are in greatest quantity in the

PCT

the inner(visceral) layer of a glomerular capsule is made of

podocytes

the liquid which collects in the minor calices of the renal sinus is

urine

which has as its main function the reabsorption of sodium chloride amino acids and about 80% of eventual water reabsorption

PCT

the maintenance of relatively high blood pressure in the glomerulus is related to the fact that

larger afferent arterioles, smaller efferent arterioles.

the hormone ADH functions by affecting what part of the kidney?

DCT collecting duct

angiotensin 1 splits from angiotensinogen by the ezymatic action of

renin

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

the primary means of water movement between fluid compartments is

osmosis

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

a decrease in angiotensin 2 leads to

decreased blood pressure in renin

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

ADH saves water by

enhancing passive movement of water out of the collection duct

extracellular fluids are

high concentration of sodium outside the cell low potassium

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

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

protein anions are most abundant in

inside of cell, plasma,interstitial fluid

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

the carboxyl group of an amino acid acts as a buffer for

weak acids hydrogen ions

hemoglobin picks up a hydrogen ion when

releases oxygen to tissue

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

an increase in ADH leads to

more water reabsorption insertion of aquaporin 2 channels into principle cell membranes

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

uncontrolled diabetes mellitus may lead to metabolic acidosis because

ketone bodies increase m increase rate of lipolysis and ketogenics occur

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

the most abundant buffer intracellular fluid system is

protein

use of laxatives in older people to relieve constipation often results in

low potassium hypokalemia

edema may result from

too much sodium not enough protein

the level of sodium ions in the blood is controlled by the homrones

aldosterone ADP ADH