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Mock Exam 2: BMAT Section 2
27 Questions, 30 Minutes
Question 1
Two mammalian cells (A and B) are placed into solution; their concentrations are shown in the diagrams below, where the total concentration of both A and B is equal to x. Which statement correctly describes the movement of water between the cells and the surrounding solution?
A. Water will move into cell B via osmosis, causing the cell wall to burst. Water will move out of cell A, causing crenation.
B. Water will move into cell A, causing it to double in size. Water will move out of cell B, causing it to shrink by a factor of 4.
C. Water will move out of cell A via osmosis, causing crenation. Water moves into cell B, causing cell lysis.
D. Water will move out of cell A causing a slight rise in the level of solution in the container. This is due to the movement of water from a higher molar concentration of sugars to a lower concentration of sugars.
B. Water will move into cell A, causing it to double in size. Water will move out of cell B, causing it to shrink by a factor of 4.
C. Water will move out of cell A via osmosis, causing crenation. Water moves into cell B, causing cell lysis.
D. Water will move out of cell A causing a slight rise in the level of solution in the container. This is due to the movement of water from a higher molar concentration of sugars to a lower concentration of sugars.
Question 2
Which of the following statements about the Group I metals is incorrect?
A. They react with chlorine to form ionic compounds.
B. They should be stored under oil.
C. They float on water.
D. They react with water to form hydrogen gas and alkaline solution.
E. They tarnish when they are exposed to air.
A. They react with chlorine to form ionic compounds.
B. They should be stored under oil.
C. They float on water.
D. They react with water to form hydrogen gas and alkaline solution.
E. They tarnish when they are exposed to air.
Question 3
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The following graph shows the variation of acceleration with time for a moving object. Assume that the moving object had a velocity of 25m/s at time t= 0 s. What is its final velocity after the 10 seconds of acceleration shown in the graph?
A. 0.4 m/s
B. 45 m/s C. 20 m/s D. 5 m/s |
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Question 4
Question 5
Which statement is correct regarding blood vessels?
A. 1&3
B. 3&4
C. 2&4
D. 1&4
- Veins exclusively carry deoxygenated blood
- Arteries carry blood at low pressure, away from the heart
- Veins have relatively thin walls
- Arteries have a small lumen and muscular walls
A. 1&3
B. 3&4
C. 2&4
D. 1&4
Question 6 and 7
Juliet is going to give blood. After her blood has been screened and is deemed safe to use for transfusion, it is given to Katie, a patient with a blood disease who requires frequent blood transfusions. Unfortunately, an agglutination reaction occurs (where red blood cells clump together). What is the most probable explanation behind this?
A. The antigens on the red blood cells and the antibodies in the plasma bind
B. The white blood cells react to the new cells and engulf them
C. The blood contains the hepatitis virus which causes an immune response
D. The blood is too cold when it is transfused, causing cells to stick together
Katie’s blood is classified as group A. Using the information above, what possible blood groups could Juliet be?
A. AB, O
B. O, A
C. B, AB
D. B, O
A. The antigens on the red blood cells and the antibodies in the plasma bind
B. The white blood cells react to the new cells and engulf them
C. The blood contains the hepatitis virus which causes an immune response
D. The blood is too cold when it is transfused, causing cells to stick together
Katie’s blood is classified as group A. Using the information above, what possible blood groups could Juliet be?
A. AB, O
B. O, A
C. B, AB
D. B, O
Question 8
Which of the following statements about the Periodic Table is incorrect?
A. Sodium and calcium have similar chemical properties
B. The elements are arranged according to their atomic numbers.
C. The vertical column is called a group, and the horizontal row is called a period.
D. There are two elements that are liquids at room temperature and pressure.
E. When moving across a period, the elements change from metal to semi-metal to non-metal in nature.
A. Sodium and calcium have similar chemical properties
B. The elements are arranged according to their atomic numbers.
C. The vertical column is called a group, and the horizontal row is called a period.
D. There are two elements that are liquids at room temperature and pressure.
E. When moving across a period, the elements change from metal to semi-metal to non-metal in nature.
Question 9
A scientist is investigating the effect of drugs of urine output. Two subjects participate in the study, with one subject ingesting alcohol, and the other ingesting ecstasy. All other variables were accurately controlled. Which of the following correctly describes the results seen?
A. Ingestion of alcohol caused a higher volume of dilute urine to be produced, as ADH secretion is increased. Ingestion of ecstasy causes a decreased volume of concentrated urine to be produced, as ADH secretion is suppressed.
B. Ingestion of alcohol caused a lower volume of concentrated urine to be produced, as ADH secretion is increased. Ingestion of ecstasy causes an increased volume of dilute urine to be produced, as ADH secretion is suppressed.
C. Ingestion of alcohol caused a higher volume of dilute urine to be produced, as ADH is suppressed. Ingestion of ecstasy caused a lower volume of concentrated urine to be produced, as ADH secretion is increased.
D. The subject ingesting ecstasy may experience headaches and/or dizziness due to dehydration. This is caused by a decreased water reabsorption under the control of ADH.
A. Ingestion of alcohol caused a higher volume of dilute urine to be produced, as ADH secretion is increased. Ingestion of ecstasy causes a decreased volume of concentrated urine to be produced, as ADH secretion is suppressed.
B. Ingestion of alcohol caused a lower volume of concentrated urine to be produced, as ADH secretion is increased. Ingestion of ecstasy causes an increased volume of dilute urine to be produced, as ADH secretion is suppressed.
C. Ingestion of alcohol caused a higher volume of dilute urine to be produced, as ADH is suppressed. Ingestion of ecstasy caused a lower volume of concentrated urine to be produced, as ADH secretion is increased.
D. The subject ingesting ecstasy may experience headaches and/or dizziness due to dehydration. This is caused by a decreased water reabsorption under the control of ADH.
Question 10
The following diagram shows a current flowing through a stationary conductor placed between the poles of permanent magnets, where the conductor experiences a force. Here is a list of descriptive statements.
- Interchange the two poles keeping their distance apart constant.
- Moving the two poles slightly further apart.
- Moving the two poles slightly closer together.
- Using a thinner conductor of the same material.
- Using a thicker conductor of the same material.
- Reversing the direction of the current.
- Moving the conductor closer to one of the poles.
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Which of the aforementioned statements would result in an increased force?
A. All of the Above B. 1, 3, 5 C. 3, 4, 5, 7 D. 3, 5 E. None of the above |
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Question 11
The force acting on the conductor in (Question 10) is directly proportional to the current in the wire. When the current was 2.4A, the force was found to be 0.8N. What is the force on the wire when the current is 4.2A?
A. 12.6N
B. 0.46N
C. 14N
D. 1.4N
E. 8.1N
A. 12.6N
B. 0.46N
C. 14N
D. 1.4N
E. 8.1N
Question 12
In the digestive system, amylase, protease and lipase act on molecules to break them down for absorption. Which statement correctly describes their activity?
A. Amylase breaks down starch into glucose; its first activity is in the mouth. Protease breaks down proteins to amino acids, and lipase breaks down lipids into fatty acids and glycerol.
B. Amylase breaks down starch into maltase, while protease breaks down proteins into amino acids, and lipase breaks down lipids into its components.
C. Protease first acts in the mouth, along with amylase. The breakdown of lipids causes an increase in PH.
D. Amylase breaks down starch into maltose, while protease breaks down proteins into amino acids, and lipase breaks down lipids into fatty acids and glycerol, causing a decrease in PH.
A. Amylase breaks down starch into glucose; its first activity is in the mouth. Protease breaks down proteins to amino acids, and lipase breaks down lipids into fatty acids and glycerol.
B. Amylase breaks down starch into maltase, while protease breaks down proteins into amino acids, and lipase breaks down lipids into its components.
C. Protease first acts in the mouth, along with amylase. The breakdown of lipids causes an increase in PH.
D. Amylase breaks down starch into maltose, while protease breaks down proteins into amino acids, and lipase breaks down lipids into fatty acids and glycerol, causing a decrease in PH.
Question 13
What type(s) of attraction is/are present in MgCO₃ molecules?
A. 1 only
B. 2 only
C. 3 only
D. 1 and 2 only
E. 1 and 3 only
F. 2 and 3 only
G. 1, 2 and 3
- Metallic bond
- Ionic bond
- Covalent bond
A. 1 only
B. 2 only
C. 3 only
D. 1 and 2 only
E. 1 and 3 only
F. 2 and 3 only
G. 1, 2 and 3
Question 14
Question 15
A patient is admitted to hospital following chest pains. The doctor carries out an ECG (Electrocardiogram). Which statement correctly describes a healthy ECG?
A. The highest peak represents the atria contracting, caused by sinoatrial node activity
B. The highest peak represents the ventricles contracting, caused by atrioventricular node activity
C. The highest peak represents the atria contracting, caused by atrioventricular node activity
D. The highest peak represents the ventricles contracting, caused by sinoatrial node activity
A. The highest peak represents the atria contracting, caused by sinoatrial node activity
B. The highest peak represents the ventricles contracting, caused by atrioventricular node activity
C. The highest peak represents the atria contracting, caused by atrioventricular node activity
D. The highest peak represents the ventricles contracting, caused by sinoatrial node activity
Question 16
Question 17
A moving rocket firework explodes. What happens to the momentum and kinetic energy just before and after the explosion?
A. Both momemntum and kinetic energy are conserved.
B. Momentum is increased, but kinetic energy is conserved.
C. Momentum is conserved, but kinetic energy is incresed.
D. Both momentum and kinetic energy are increased.
A. Both momemntum and kinetic energy are conserved.
B. Momentum is increased, but kinetic energy is conserved.
C. Momentum is conserved, but kinetic energy is incresed.
D. Both momentum and kinetic energy are increased.
Question 18
A specific type of anaemia (a blood disease) is caused by the inheritance of a faulty allele. Heterozygotes are affected by the disease – known as a ‘trait’. Inheritance of both faulty alleles causes death in utero. A couple attend genetic counselling to discuss the probabilities of their children inheriting the disease. Both parents are carriers of the faulty allele. Which of the following statements is correct?
A. 25% of the daughters born will be completely unaffected, and 50% of the sons will be carriers.
B. 25% of offspring will be born with both faulty alleles, and 1 in 2 will have the disease trait
C. 1 in 2 will have the disease trait, and if any of the offspring reproduce with another carrier, their children will indefinitely be carriers.
D. 25% of daughters will die in utero and if any of the offspring reproduce with an affected homozygote, their children will die in utero indefinitely.
A. 25% of the daughters born will be completely unaffected, and 50% of the sons will be carriers.
B. 25% of offspring will be born with both faulty alleles, and 1 in 2 will have the disease trait
C. 1 in 2 will have the disease trait, and if any of the offspring reproduce with another carrier, their children will indefinitely be carriers.
D. 25% of daughters will die in utero and if any of the offspring reproduce with an affected homozygote, their children will die in utero indefinitely.
Question 19
The equation for the formation of tetrachloromethane from methane is
If 1.6g of methane were reacted with 30 g of chlorine (in excess) to produce 15.4 g of tetrachloromethane, what mass of chlorine is left?
(Ar: H=1; C=12; Cl = 35.5)
A. 0.20 g
B. 1.60 g
C. 15.8 g
D. 16.2 g
E. 22.9 g
F. 28.4 g
(Ar: H=1; C=12; Cl = 35.5)
A. 0.20 g
B. 1.60 g
C. 15.8 g
D. 16.2 g
E. 22.9 g
F. 28.4 g
Question 20
The diagram shows some ice placed in a beaker of warm water to cool it. Ice gained 20.2 kJ of heat while cooling the water down. The beaker contains 400g of water. If the initial temperature of water is 30°C. What is the water final temperature, assuming that the heat exchange took place between water and ice only and knowing that the specific heat capacity of water = 4.2 J/ (g °C).
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A. 30 B. 20 C. 18 D. 12 |
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Question 21
A patient is currently taking a drug to reduce the size of a tumour. A side effect of the drug is damage to white blood cells. What is the most likely symptom in the patient?
A. Prolonged bleeding after cutting the skin
B. Frequent coughs and colds
C. Exercise intolerance
D. Weight loss
A. Prolonged bleeding after cutting the skin
B. Frequent coughs and colds
C. Exercise intolerance
D. Weight loss
Question 22
A linear sequence can be described in terms of n by the following expression:
7(n+4) + 17
What would be the 4th, 7th and 1300th term of this sequence respectively?
A. 49, 70, 1321
B. 73, 94, 9117
C. 73, 97, 7238
D. 73, 94, 9145
E. 52, 70, 66
7(n+4) + 17
What would be the 4th, 7th and 1300th term of this sequence respectively?
A. 49, 70, 1321
B. 73, 94, 9117
C. 73, 97, 7238
D. 73, 94, 9145
E. 52, 70, 66
Question 23
Which of the following substances could exist as a simple molecular structure?
A. Diamond
B. Fullerene
C. Quartz
D. Bronze
E. Silicon
A. Diamond
B. Fullerene
C. Quartz
D. Bronze
E. Silicon
Question 24
Which of the following statements about bile is correct?
A. 1,2,3
B. 2,3,4
C. 2,3
D. All are correct
- Bile enhances the activity of lipase by lowering its activation energy and is stored in the liver.
- Bile enhances the activity of lipase by producing an emulsification and is produced in the liver.
- Bile enhances the activity of lipase by increasing surface area of lipid droplets and is stored in the gallbladder.
- Bile contains alkaline salts to lower pH in the small intestine and is stored in the gallbladder.
A. 1,2,3
B. 2,3,4
C. 2,3
D. All are correct
Question 25
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A hot water tank contains two heaters. One heater is near the top and the other near the bottom as shown in the diagram.
The tank contains 120 litres of water. How long would it take heater 2 to warm all the water from 20 °C to 50 °C? Specific heat capacity of water = 4.2 J/(g °C). 1 litre = 1000 cm3 Density of water = 1g/cm3 Power rating of heater = 3 kW A. 8400 mins B. 6400 mins C. 3360 mins D. 5040 mins E. 84 mins |
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Question 26
A covalent compound is formed between nitrogen and chlorine. What is the formula of this compound?
Question 27
Which of the following options correctly describes the regulation of blood glucose levels?
