Gamsat Biology Exam Question Sample
Unit 1 Questions 1- 3
Figure 1 The sources of blood glucose in a human body during a normal day of 24 hours are shown in the above figure. Glucose is primarily derived from glycogenolysis occurring between meals. Glucose is chiefly sourced from the dietary intake for few hours following the principal meals of the day. Late at night, gluconeogenesis becomes the predominant source of glucose. 1 Glycogenolysis decreases after midnight because A C 2 gluconeogenesis takes place. hepatic glycogen is depleted. B D muscle glycogen is converted to glucose. energy consumption is less after mid night.
The early morning glucose supply in the blood is provided by which of the following? A C Diet Gluconeogenesis B D Glycogenolysis Both B and C
3
The maximum contribution of blood glucose from gluconeogenesis occurs during which of the following time periods? A C At midnight Before breakfast B D After lunch Before dinner
Unit 2 Question 4 Regulation of blood glucose level is tightly controlled by feedback mechanisms in the body. Insulin is released from beta cells in the pancreas in response to the consumption of food. As glucose levels drop during fasting, the pancreas secretes glucagon from alpha cells that release glucose from body stores. 4 Thirty minutes after eating a large sweet meal including cake and candy, which of the following blood levels would be expected?
A C
Low Glucose, low Insulin Low Glucose, high Insulin
B D
High Glucose, low Insulin High Glucose, high Insulin
Unit 3 Questions 5-9
Figure 1 The population growth of two species of Paramecium is shown in the graphs above. Graph ‘a’ shows the growth of both species when cultured separately, while graph ‘b’ shows the growth of both Paramecium species cultured together. When the two species of Paramecium are cultured together, Paramecium aurelia has a competitive advantage over Paramecium caudatum. When the two species are grown separately, the growth of both species achieves a
Figure 1 The sources of blood glucose in a human body during a normal day of 24 hours are shown in the above figure. Glucose is primarily derived from glycogenolysis occurring between meals. Glucose is chiefly sourced from the dietary intake for few hours following the principal meals of the day. Late at night, gluconeogenesis becomes the predominant source of glucose. 1 Glycogenolysis decreases after midnight because A C 2 gluconeogenesis takes place. hepatic glycogen is depleted. B D muscle glycogen is converted to glucose. energy consumption is less after mid night.
The early morning glucose supply in the blood is provided by which of the following? A C Diet Gluconeogenesis B D Glycogenolysis Both B and C
3
The maximum contribution of blood glucose from gluconeogenesis occurs during which of the following time periods? A C At midnight Before breakfast B D After lunch Before dinner
Unit 2 Question 4 Regulation of blood glucose level is tightly controlled by feedback mechanisms in the body. Insulin is released from beta cells in the pancreas in response to the consumption of food. As glucose levels drop during fasting, the pancreas secretes glucagon from alpha cells that release glucose from body stores. 4 Thirty minutes after eating a large sweet meal including cake and candy, which of the following blood levels would be expected?
A C
Low Glucose, low Insulin Low Glucose, high Insulin
B D
High Glucose, low Insulin High Glucose, high Insulin
Unit 3 Questions 5-9
Figure 1 The population growth of two species of Paramecium is shown in the graphs above. Graph ‘a’ shows the growth of both species when cultured separately, while graph ‘b’ shows the growth of both Paramecium species cultured together. When the two species of Paramecium are cultured together, Paramecium aurelia has a competitive advantage over Paramecium caudatum. When the two species are grown separately, the growth of both species achieves a