beta.ocr.org.uk › Images › 383565-communication-… · Web viewMultiple Choice Questions (MCQ) topic quiz. Communication and Homeostasis. Instructions and answers for teachers.
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Multiple Choice Questions (MCQ) topic quiz
Communication and Homeostasis
Instructions and answers for teachersThese instructions cover the learner activity section which can be found on page 13.
This Lesson Element supports OCR AS and A Level Biology A (H020, H420) and Biology B (Advancing Biology) (H022, H422).
When distributing the activity section to the learners either as a printed copy or as a Word file you will need to remove the teacher instructions section.
The Activity This Lesson Element is a teaching and learning resource containing 20 multiple choice questions (MCQs) on the theme of photosynthesis. Some questions might require synoptic thinking, using knowledge and ideas from various topics across the full A Level content.
This resource can be used to test and consolidate understanding at the end of a topic or to revisit and refresh knowledge at a later point in the course.
Introduction Multiple choice questions allow rapid coverage of a wide range of sub-topics.
Contrary to a widespread belief among students, multiple choice questions are not necessarily easy – they can be easy, moderate or difficult.
The questions are written so that the incorrect answers are plausible distractors based on common errors or misconceptions.
The questions in this quiz cover topics mainly from specification section:
2. The diagram shows some biochemical pathways in a liver cell, some of which are reversible. Five reactions whose rate in a certain direction can be changed by the presence of a hormone are labelled 1 – 5.
Each number relates to the direction of the arrow nearest to the number.
Which numbered reactions have their rate increased in the presence of insulin?
7. Homeostasis maintains optimum concentrations of chemicals in tissue fluid and blood plasma, so that reactions can function optimally in cell cytoplasm.
The diagram shows the concentrations of three different ions and the concentration of protein measured in these three constituents.
Which line of the table correctly identifies 1, 2 and 3?
8. What will increase the secretion of anti-diuretic hormone from the posterior pituitary gland?
A decreasing the external temperature of the body
B drinking a large volume of water
C Injecting a concentrated salt solution with low water potential into the body
D Injecting a dilute glucose solution with high water potential into the body
Your answer
9. A glucose tolerance test can be used to investigate a person’s ability to homeostatically adjust their blood glucose concentration. The concentration of glucose in the blood plasma is measured before and after consuming 50 g glucose. The table shows plasma blood glucose concentrations before and during a glucose tolerance test that are diagnostic of different conditions.
10. Hepatocytes carry out a number of different functions.
Which statements describe functions that occur in hepatocytes?
Function 1: combining ammonia and carbon dioxide via the ornithine cycle
Function 2: storage of glycogen and some vitamins and minerals
Function 3: breakdown of drugs and alcohol
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer
11. Neurones are electrically excitable cells that experience changes in the electrical potential differences across their membranes. Particular potential difference values or changes are identified by the terms resting potential, threshold potential and action potential.
Which statements are true of these terms?
Statement 1: Action potential describes a rapid reversal in potential difference.
Statement 2: Resting potential and threshold potential are negative values.
Statement 3: An action potential begins before threshold potential is reached.
Which line of the table identifies the hormones W, X and Y?
W X Y
A glucagon insulin adrenaline
B glucagon adrenaline insulin
C insulin adrenaline glucagon
D insulin glucagon adrenaline
Your answer
14. A certain poison kills by causing paralysis of the breathing muscles. When the poison is present, the sarcolemma at the neuromuscular junctions cannot depolarise.
Which could explain the action of this poison?
Statement 1: It prevents the release of acetylcholine.
Statement 2: It blocks acetylcholine receptors on the sarcolemma.
Statement 3: It inhibits the action of acetylcholinesterase.
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This formative assessment resource has been produced as part of our free Biology teaching and learning support package. All the Biology teaching and learning resources, including delivery guides, topic exploration packs, lesson elements and more are available on the qualification webpages.
If you are looking for examination practice materials, you can find Sample Assessment Materials (SAMs) and a link to the Practice Papers on the qualification webpages: Biology A, Biology B.
2. The diagram shows some biochemical pathways in a liver cell, some of which are reversible. Five reactions whose rate in a certain direction can be changed by the presence of a hormone are labelled 1 – 5.
Each number relates to the direction of the arrow nearest to the number.
Which numbered reactions have their rate increased in the presence of insulin?
7. Homeostasis maintains optimum concentrations of chemicals in tissue fluid and blood plasma, so that reactions can function optimally in cell cytoplasm.
The diagram shows the concentrations of three different ions and the concentration of protein measured in these three constituents.
Which line of the table correctly identifies 1, 2 and 3?
8. What will increase the secretion of anti-diuretic hormone from the posterior pituitary gland?
A decreasing the external temperature of the body
B drinking a large volume of water
C Injecting a concentrated salt solution with low water potential into the body
D Injecting a dilute glucose solution with high water potential into the body
Your answer
9. A glucose tolerance test can be used to investigate a person’s ability to homeostatically adjust their blood glucose concentration. The concentration of glucose in the blood plasma is measured before and after consuming 50 g glucose. The table shows plasma blood glucose concentrations before and during a glucose tolerance test that are diagnostic of different conditions.
10. Hepatocytes carry out a number of different functions.
Which statements describe functions that occur in hepatocytes?
Function 1: combining ammonia and carbon dioxide via the ornithine cycle
Function 2: storage of glycogen and some vitamins and minerals
Function 3: breakdown of drugs and alcohol
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer
11. Neurones are electrically excitable cells that experience changes in the electrical potential differences across their membranes. Particular potential difference values or changes are identified by the terms resting potential, threshold potential and action potential.
Which statements are true of these terms?
Statement 1: Action potential describes a rapid reversal in potential difference.
Statement 2: Resting potential and threshold potential are negative values.
Statement 3: An action potential begins before threshold potential is reached.
14. A certain poison kills by causing paralysis of the breathing muscles. When the poison is present, the sarcolemma at the neuromuscular junctions cannot depolarise.
Which could explain the action of this poison?
Statement 1: It prevents the release of acetylcholine.
Statement 2: It blocks acetylcholine receptors on the sarcolemma.
Statement 3: It inhibits the action of acetylcholinesterase.
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer
15. Which statements are true of feedback systems in the body?
Statement 1: Negative feedback acts to reverse a change.
Statement 2: An example of negative feedback occurs when a high plasma concentration of a hormone inhibits further secretion of that hormone.
Statement 3: Positive feedback occurs during the generation of an action potential.