Insulin belongs to the group of biomacromolecules called_______.
A. nucleic acids
B. carbohydrates
C. lipids
D. proteins/peptides
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Pancreas belongs to_______.
A. both cardiovascular system and digestive system
B. both endocrine system and respiratory system
C. both digestive system and endocrine system
D. both cardiovascular system and endocrine system
Which of the following statements regarding the release of insulin is correct?
A. Insulin is released by the pancreas at a constant rate throughout the day.
B. Release surges of insulin are responsive to a decrease in the blood glucose level.
C. Release surges of insulin can be observed after meals.
D. Insulin is released by the pancreases only after a meal.
Glucose molecules from the blood are transported into the cells by____________.
A. active transport
B. passive diffusion
C. facilitated diffusion
Insulin helps glucose to enter the cells by__________.
A. binding to insulin receptors and activating glucose transporters
B. directly creating pores on the cell membrane
C. increasing the concentration gradient of glucose across cell membrane.
D. decreasing the concentration gradient of glucose across cell membrane.
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