Excretion Quiz
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The region of the brain that detect the change in concentration of the blood
A. Hypothalamus
B. Pituitary gland
C. Optic nerve
Which of the following by-products of metabolism is most toxic?
A. Urea
B. Uric acid
C. Ammonia
D. Carbonic acid
Birds eliminate nitrogenous waste in the form of?
A. amino acids
B. ammonia
C. urea
D. uric acid
Excretes waste out of the body from the bladder
A. Ureter
B. Urethra
Not enough water in our blood results in …………….. ADH being released
A. More
B. Less
First part of the nephron where the glomerular filtrate enters from the glomerulus
A. Glomerulus
B. PCT
C. Bowman’s capsule
D. Collecting duct
What method of transport does glucose and inorganic ions get reabsorbed into the blood at the PCT
A. Osmosis
B. Diffusion
C. Active transport
During what reaction is oxygen used and carbon dioxide produced in a leaf?
A. Respiration
B. Photosynthesis
Takes urine from the kidney to the bladder
A. Ureter
B. Urethra
Which of the following is a function of the excretory system?
A. detoxification
B. blood maintenance
C. elimination of undigested foods
D. maintenance of water balance
During what reaction is oxygen produced and carbon dioxide used in a leaf?
A. Respiration
B. Photosynthesis
Marine animals that have body fluids with a solute concentration equal to that of the surrounding sea water are:
A. osmoregulators
B. osmoconformers
C. osmoinformers
D. hyperosmotic
Which of the following statements regarding freshwater fish is true?
A. Freshwater fish frequently drink to obtain salt ions
B. Freshwater fish do not produce urine
C. Freshwater fish use their gills to actively take up salt ions
D. Freshwater fish lose water through their gills by osmosis
The functional unit of the kidney is the
A. renal unit
B. glomerulus
C. Bowman’s capsule
D. nephron
What method of transport does water get reabsorbed into the blood at the PCT
A. Osmosis
B. Diffusion
C. Active transport
Which of the following statements about uric acid is true?
A. Uric acid is more soluble in water than urea
B. The darker material in bird droppings is mostly uric acid
C. Animals that excrete uric acid avoid the problem of dehydration associated with the excretion of urea
D. Uric acid cannot be excreted because of its toxicity
Mammals have evolved a sophisticated mechanism for eliminating nitrogenous waste that involves:
A. secretion through cell membranes
B. forming urea and storing it in concentrated solution
C. producing uric acid and excreting it with feces
D. recycling urea and using it as an energy source
To conserve precious salts, freshwater fish…
A. produce small amounts of urine
B. significantly dilute their urine
C. do not take up water
D. drink through their gills
Which of the following statements regarding saltwater fish is true?
A. The concentration of solutes in the internal fluids of saltwater fish is much lower than the surrounding water
B. Saltwater fish produce large amounts of diluted urine
C. Saltwater fish frequently dilute their body fluids
D. The concentration of solutes in the internal fluids of saltwater fish is higher than in the surrounding environment
Where ADH is released from
A. Hypothalamus
B. Pituitary gland
C. Pancreas
Which animals are being studied as examples of an adaptation called anhydrobiosis?
A. tardigrades
B. polar bears
C. cestodes
D. camels
ADH causes the collecting duct to become …………… permeable to water
A. More
B. Less
Which of the following is not associated with the production of urine?
A. proximal tubule
B. loop of Henle
C. collecting duct
D. Malpighian tubule
More ADH secreted from the pituitary gland =?
A. More water reabsorbed and less concentrated urine
B. Less water reabsorbed and more concentrated urine
C. Less water reabsorbed and less concentrated urine
D. More water reabsorbed and more concentrated urine
What is the advantage of excreting nitrogenous waste in the form of ammonia?
A. Ammonia is less toxic than uric acid
B. Ammonia is less soluble than uric acid
C. Ammonia excretion conserves energy
D. Ammonia does not diffuse across cell membranes
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