Excretion Quiz

Multiple Choice

Which human excretory organ breaks down red blood cells and synthesizes urea?

• lung

• kidney

• skin

• liver

Multiple Choice

An investigation was carried out to determine the effect of drinking an excessive amount of water on urine flow. A subject drank 1 liter of water in 5 minutes, and then urine output was measured. The graph shows how the human adult kidneys respond to regulate water balance in the body. Approximately how long did it take, in minutes, for the body to return to normal after the intake of water?

• 60 minutes

• 90 minutes

• 140 minutes

• 180 minutes

Multiple Choice

The change in urine production during this 3- hour period was most likely the result of

• antibody production

• homeostasis

• enzyme breakdown

• nerve malfunction

Multiple Choice

One half-hour after the liter of water was consumed, the urine produced by the kidney was

• between 2 and 3 mL/min

• between 4 and 5 mL/min

• eight times greater than normal

• below normal range

Multiple Choice

Identify a structure in single celled organisms (don't have kidneys) that helps with excretion

• mitochondria

• contractile vacuole

• centrioles

• nucleus

Multiple Choice

Which process reduces the concentration of urea in the blood?

• digestion

• synthesis

• egestion

• excretion

Multiple Choice

The removal of carbon dioxide and nitrogenous wastes from an organism illustrates the life function know as

• regulation

• respiration

• nutrition

• excretion

Multiple Choice

Which human excretory structure aids in the maintenance of normal body temperature?

• sweat gland

• nephron

• liver

• urinary bladder

Multiple Choice

Which sequence represents the correct pathway for the rmoval of urine from the human body?

• kidney-urethra--urinary bladder--ureter

• urethra-kidney-urinary bladder-ureter

• kidney-ureter-urinary bladder-urethra

• urinary bladder-urethra-kidney-ureter

Multiple Choice

In humans, the organ that most directly regulates the concentration of water in the blood is the

• heart

• liver

• pancreas

• kidney

Multiple Choice

The nephron is the structural unit of the human

• lung

• liver

• kidney

• intestine

Multiple Choice

Base your answer to the following question on the diagram below which represents a microscopic view of a function unit of a kidney and your knowledge of biology. Structure A is known as the:

• glomerulus

• cortex

• proximal tubule

• boman's capsule

Multiple Choice

In humans, gout is caused by excess production and deposition of

• fatty acids

• uric acid

• lactic acid

• amino acids

Multiple Choice

In humans, the ureter transports urine from

• blood to kidney

• liver to kidney

• kidney to urinary bladder

• urinary bladder to the outside of the body