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WorksheetsCHAPTER 9 HOMEOSTASIS (Week 14)
Total questions: 10
Worksheet time: 5mins
Homeostasis refers to
the maintenance of a constant heart beat.
the dynamic processes occurring in the kidney.
the static unchanging environment factors.
the constancy of the internal environment of an organism.
Most hormones of the endocrine system are regulated by a:
A. Negative feedback mechanism.
B. Positive feedback mechanism.
C. Hormone-receptor complex.
D. Hormone-gene complex.
In the pancreas, which are the cells that secrete insulin, decrease the blood levels of glucose.
A. delta
B. alpha
C. beta and alpha
D. beta
When insulin is secreted, which process is stimulated?
A. Glycogenesis.
B. Glycogenolysis.
C. Gluconegenesis.
D. Glucolysis.
Which of the following process is TRUE about glucagon?
A. accelerates the conversion of glycogen into glucose.
B. slows down glucose formation from lactic acid.
C. decreases the conversion of glycogen into glucose.
D. speeds up protein synthesis within cells.
The figure above shows a part of the nephron. Which of the following is true about the processes that happen to blood in X, glucose in Y and water in Z?
X: Secretion,
Y: Reabsorption,
Z: Ultrafiltration
X: Reabsorption,
Y: Ultrafiltration,
Z: Secretion
X: Reabsorption,
Y: Secretion,
Z: Ultrafiltration
X: Ultrafiltration,
Y: Reabsorption,
Z: Osmosis
Components of human blood plasma which enter the Bowman's capsule and form the glomerular filtrate are
urea, mineral salts, water glucose, collagen.
urea, mineral salts, water, glucose, amino acid.
albumen. urea, mineral salts, water, glocose, amino acid.
urea, mineral salts, water, vitamin, amino acid, red blood cell.
About 85% of water is reabsorbed from the filtrate at
Bowman's capsule.
Proximal convoluted tubule.
Collecting duct.
Loop of Henle
Which one of the following is totally reabsorbed?
Water.
Urea.
Glucose.
Sodium.
The process whereby the kidney maintains the concentration of water, salt and ions at an optimum level is called
osmoregulation.
metabolism.
homeostasis.
excretion.
