Sentry Page Protection

Please Wait...

## Mock Exam 1: BMAT Section 2

*27 Questions, 30 Minutes*

## Question 1

*The family tree represents monohybrid inheritance for a disease. The Dominant allele is represented by R and the recessive allele is represented by r.*

Which of the following choices represents the genotype of individuals M, N and O respectively?

A. RR, rr, Rr

B. Rr, rr, Rr

C. Rr, rr, RR

D. RR, rr, RR

E. RR, Rr, RR

Which of the following choices represents the genotype of individuals M, N and O respectively?

A. RR, rr, Rr

B. Rr, rr, Rr

C. Rr, rr, RR

D. RR, rr, RR

E. RR, Rr, RR

The disease is caused by a recessive allele. The easiest one to work out is N, since this individual has the disease they must be rr. Then to work out M, it’s important to look at the parents. The affected male must be rr so the unaffected female can either be Rr or RR. However, the two parents have had an affected female (N) who is rr. This individual has to have gotten one recessive allele from both parents, therefore, The female parent in question must be Rr rather than RR. Finally for O, we know that his mother is rr (N) which means that he must have a recessive allele ( r). The male is unaffected so the other allele is R resulting in a Rr genotype.

**Correct Answer: B**The disease is caused by a recessive allele. The easiest one to work out is N, since this individual has the disease they must be rr. Then to work out M, it’s important to look at the parents. The affected male must be rr so the unaffected female can either be Rr or RR. However, the two parents have had an affected female (N) who is rr. This individual has to have gotten one recessive allele from both parents, therefore, The female parent in question must be Rr rather than RR. Finally for O, we know that his mother is rr (N) which means that he must have a recessive allele ( r). The male is unaffected so the other allele is R resulting in a Rr genotype.

Question 2

*The following statements are about hormones:*

1. Adrenaline is secreted from the pituitary gland

2. Insulin reduces the blood glucose levels and is secreted by the alpha cells

3. ADH causes the urine to be more concentrated

4. Adrenaline can decrease breathing rate, increase heart rate and stroke volume.

Which of these statements are false?

A. Only 3

B. 1 and 4

C. 1,2 and 3

D. 2 and 4

E. 1, 2 and 4

F. 2, 3 and 4

G. Only 4

1. Adrenaline is secreted from the pituitary gland

2. Insulin reduces the blood glucose levels and is secreted by the alpha cells

3. ADH causes the urine to be more concentrated

4. Adrenaline can decrease breathing rate, increase heart rate and stroke volume.

Which of these statements are false?

A. Only 3

B. 1 and 4

C. 1,2 and 3

D. 2 and 4

E. 1, 2 and 4

F. 2, 3 and 4

G. Only 4

Adrenaline is secreted from the adrenal glands

Insulin does reduce blood glucose levels but it is secreted by the beta cells

Statement 3 is correct

Adrenaline causes breathing rate, heart rate and stroke volume to all increase

**Correct Answer: E**Adrenaline is secreted from the adrenal glands

Insulin does reduce blood glucose levels but it is secreted by the beta cells

Statement 3 is correct

Adrenaline causes breathing rate, heart rate and stroke volume to all increase

Question 3

*A metal, X, is in group II of the periodic table. A non-metal, Y, is in group V of the periodic table. They react together to form a compound.*

**Correct Answer: B**

Question 4

*Consider the following equilibrium*

*Which of the following changes will result in more ClNO being produced?*

*A. Increase the pressure*

*B. Increase the temperature*

*C. Add a catalyst*

*D. Decrease the pressure*

*E. Decrease the temperature*

Increasing pressure makes the equilibrium shift to the side with fewer moles. Because the moles are equal on both sides, increasing or decreasing the pressure makes no difference to the position of equilibrium. Increasing the temperature makes the equilibrium shift in the endothermic direction, hence shifting in the backwards direction. Adding a catalyst makes no difference to the position of equilibrium. Decreasing the temperature makes the reaction shift in the exothermic direction, thus in the forward direction hence producing more moles of ClNO.

**Correct Answer: E**Increasing pressure makes the equilibrium shift to the side with fewer moles. Because the moles are equal on both sides, increasing or decreasing the pressure makes no difference to the position of equilibrium. Increasing the temperature makes the equilibrium shift in the endothermic direction, hence shifting in the backwards direction. Adding a catalyst makes no difference to the position of equilibrium. Decreasing the temperature makes the reaction shift in the exothermic direction, thus in the forward direction hence producing more moles of ClNO.

Question 5

*Simplify*

**Correct Answer: C**

Question 6

*Which of the following statements are correct*

*The sensory neurone connects the receptor and the relay neurone**The motor neurone has 1 short axon**The sensory neurone has many short dendrites**The relay neurone is entirely within the CNS**The sensory neurone has 1 short axon*

A. Only 4

B. Only 1

C. 2, 4 and 5

D. 1, 4 and 5

E. 3 and 5

F. 1 and 2

G. 2 and 3

H. 3,4 and 5

A. Only 4

B. Only 1

C. 2, 4 and 5

D. 1, 4 and 5

E. 3 and 5

F. 1 and 2

G. 2 and 3

H. 3,4 and 5

1 is correct

The motor neurone has 1 long axon

The sensory neurone has 1 long dendrite

4 and 5 are correct

****

Correct Answer: DCorrect Answer: D

1 is correct

The motor neurone has 1 long axon

The sensory neurone has 1 long dendrite

4 and 5 are correct

Question 7

*2.74g of 1-bromobutane is reacted with excess aqueous sodium hydroxide to produce 1.11g of butan-1-ol according to the equation below*

*What is the percentage yield of butan-1-ol?*

(Ar: H=1, C=12, O=16, Na=23, Br=80)

A. 26%

B. 40%

C. 54%

D. 75%

(Ar: H=1, C=12, O=16, Na=23, Br=80)

A. 26%

B. 40%

C. 54%

D. 75%

**Correct Answer: D***Moles of 1-bromobutane= 2.74/ 137 = 0.02*

Mass= n x Mr

Theoretical mass of butan-1-ol = 0.02x 74= 1.48g

Percentage yield= actual mass/ theoretical maximum mass x 100= 1.11/ 1.48 x 100= 75%

Mass= n x Mr

Theoretical mass of butan-1-ol = 0.02x 74= 1.48g

Percentage yield= actual mass/ theoretical maximum mass x 100= 1.11/ 1.48 x 100= 75%

##

Question 8

*Which of the following is the correct unit for potential difference?*

*Amp per Ohm**Joule per second per amp**Newton per coulomb**Coulomb per joule**Newton per amp*

A. 1

B. 2

C. 3

D. 4

E. 5

A. 1

B. 2

C. 3

D. 4

E. 5

**Correct Answer: B**

##

Question 9

*A parachutist opens her parachute and has a mass of 50kg. She experiences 700N of air resistance.*

Which line in the table gives the size and direction of the acceleration of the parachutist at this instance?

Which line in the table gives the size and direction of the acceleration of the parachutist at this instance?

A= 200/ 50= 4m/ss

The direction of acceleration is upwards as that’s the direction of the resultant force.

**Correct Answer: C**

The resultant force is acting upwards as there is 700N air resistance acting upwards and 500N of weight acting downwards. Thus 200N acting downwards. F=ma so a=F/m

A= 200/ 50= 4m/ss

The direction of acceleration is upwards as that’s the direction of the resultant force.

Question 10

*A company develops a test for people with a particular condition, which can give a positive or a negative result. However, because the test is recently developed it can be inaccurate. The test was trialed on 200 people.*

1/10 of the people have the condition

9/10 0f the people with the condition test positive

1/6 of the people without the condition test positive.

A randomly selected person from the group is selected and they test positive for the condition

What is the probability that they actually have the condition?

1/10 of the people have the condition

9/10 0f the people with the condition test positive

1/6 of the people without the condition test positive.

A randomly selected person from the group is selected and they test positive for the condition

What is the probability that they actually have the condition?

*A. 2.6%*

*B. 16.67%*

*C. 10%*

*D. 37.5%*

It would make sense to draw a tree diagram. The number of people with the condition is 20 (0.1x200). The number of people without the condition is therefore 180. The number of people who test positive who have the condition is 18 (0.9x20). The number of people who test positive who don’t have the condition is 30 (1/6 x 180).

The total number of people who test positive are 48 (30+18). Of these, only 18 actually have the condition.

Therefore the answer is 18/48 x 100= 37.5%

**Correct Answer: D**It would make sense to draw a tree diagram. The number of people with the condition is 20 (0.1x200). The number of people without the condition is therefore 180. The number of people who test positive who have the condition is 18 (0.9x20). The number of people who test positive who don’t have the condition is 30 (1/6 x 180).

The total number of people who test positive are 48 (30+18). Of these, only 18 actually have the condition.

Therefore the answer is 18/48 x 100= 37.5%

##

Question 11

*Below is an unbalanced chemical equation:*

*What number is represented by the letter c?*

*A. 2*

*B. 6*

*C. 5*

*D. 8*

**Correct Answer: C**##

Question 12

*A student concludes the following about the above circuit*

*The current flows clockwise**Ammeter 4 and Ammeter 1 have the same reading**Ammeter 3 has a higher reading than Ammeter 2**Voltmeter 2 has a reading of 12V**The voltage stays the same throughout a parallel circuit*

Which of the above statements are true?

Which of the above statements are true?

*A. 2 and 5*

*B. Only 2*

*C. 2,4 and 5*

*D. 1,2,4 and 5*

*E. 3,4 and 5*

*F. 1,3 and 4*

*G. 3 and 5*

*H. 1 and 4*

1 is false as the current flows anticlockwise

2 is true

3 is false as Ammeter 3 has more bulbs in its path of current. This means it encounters more resistance- a higher resistance lowers the current

4 is false as even though the voltage stays the same in a parallel circuit, this area (the lower parallel part) of the parallel circuit is independent thus counts as series. So the 12V need to be divided amongst the 3 bulbs equally, resulting in Voltmeter 2 having a reading of 4V.

5 is true

**Correct Answer: A**1 is false as the current flows anticlockwise

2 is true

3 is false as Ammeter 3 has more bulbs in its path of current. This means it encounters more resistance- a higher resistance lowers the current

4 is false as even though the voltage stays the same in a parallel circuit, this area (the lower parallel part) of the parallel circuit is independent thus counts as series. So the 12V need to be divided amongst the 3 bulbs equally, resulting in Voltmeter 2 having a reading of 4V.

5 is true

##

Question 13

*Below is a quadrilateral*

*Given tan*ϑ

*= 2/3*

What is the area of the shape?

What is the area of the shape?

Separate the shape into a rectangle and triangle with the dividing line coming down vertically from point B. Label the point at which the line joins the bottom side of the quadrilateral ‘X’. The trig ratio means that the side of the triangle horizontally adjacent to C (CX) is 3 cm and the vertical side (BX) is 2cm according to the ratios. However, in actuality the actual length CX is 6cm. So the ratio is infact, 4cm:6cm as the actual lengths are scaled up by a factor of 2. Thus BX is 4cm. Now the area can be calculated.

**Correct Answer: B**Separate the shape into a rectangle and triangle with the dividing line coming down vertically from point B. Label the point at which the line joins the bottom side of the quadrilateral ‘X’. The trig ratio means that the side of the triangle horizontally adjacent to C (CX) is 3 cm and the vertical side (BX) is 2cm according to the ratios. However, in actuality the actual length CX is 6cm. So the ratio is infact, 4cm:6cm as the actual lengths are scaled up by a factor of 2. Thus BX is 4cm. Now the area can be calculated.

##

Question 14

*Which of the following are not describing the role of mitosis*

*Asexual reproduction**Fertilisation**Tissue repair**Development of embryos**Growth of a cell**Stem cell division*

*A. 1 and 6*

*B. 1,3,4,5 and 6*

*C. 1,2,3,4,5 and 6*

*D. 1, 3 4 and 6*

*E. 2,4,5 and 6*

*F. 3 and 5*

*G. 1 and 2*

*H. 3,4 and 5*

1 is correct

2 is incorrect, this is nothing to do with mitosis

3 is correct

4 is correct

5 is incorrect, mitosis produces cells for growth of a tissue

6 is correct

Correct Answer: DCorrect Answer: D

1 is correct

2 is incorrect, this is nothing to do with mitosis

3 is correct

4 is correct

5 is incorrect, mitosis produces cells for growth of a tissue

6 is correct

##

Question 15

*Billy has some soup that he wants to keep hot, what sort of container should he put it in?*

*A. A container made of metal with a shiny interior and a matt exterior*

*B. A container made of wood, with a matt interior and a matt exterior*

*C. A container made of metal, with a shiny interior and a shiny exterior*

*D. A container made of wood, with a shiny interior and a shiny exterior*

*E. A container made of wood, with a shiny interior and a matt exterior*

The wood container is an insulator, the shiny interior reflects the heat inside and the shiny exterior means that heat is not absorbed from the surroundings as shiny materials are poor absorbers and emitters of heat.

**Correct Answer: D**The wood container is an insulator, the shiny interior reflects the heat inside and the shiny exterior means that heat is not absorbed from the surroundings as shiny materials are poor absorbers and emitters of heat.

##

Question 16

*Which of the following statements are true?*

*Alpha radioactivity can be used in medical tracers (false topical radiotherapy)**Gamma particles are weakly ionising and slow moving (fast false)**Beta decay involves a neutron turning into a proton and electron true**Alpha decay is weakly penetrating true*

*A. Only 3*

*B. 1, 3 and 4*

*C. 2 and 4*

*D. 1 and 4*

*E. 3 and 4*

*F. 2, 3 and 4*

*G. 1,2,3 and 4*

1 is incorrect because alpha radioactivity is used in topical radiotherapy

2 is incorrect because even though gamma particles are weakly ionising they are fast moving

3 and 4 are both correct

**Correct Answer: E**1 is incorrect because alpha radioactivity is used in topical radiotherapy

2 is incorrect because even though gamma particles are weakly ionising they are fast moving

3 and 4 are both correct

##

Question 17

*There are 3 sets of classes in a year of university students. The mean age for Class A is 28. The mean age for Class B is 25 and the mean age of Class C is 31. The mean age of all 3 classes is 29, with Class A containing twice as many students as Class B.*

Which statement is correct:

Which statement is correct:

*Class C contains fewer students than Class B**Class C contains 1/3 the number of students compared to Class A**Class C contains 3x as many students as there are in Class B**Class C contains the same number of students as Class A*

A. 1

B. 2

C. 3

D. 4

A. 1

B. 2

C. 3

D. 4

Let there be n students in Class B thus 2n students in Class A

So in class A the total scores are: 28 x 2n= 56n

Total scores in class B is: 25n

Let there be m students in class c thus the total score is 31m

The total is scores across all 3 classes is: 29 x(2n+n+m)= 87n +29m

Thus the overall equation is:

87n + 29m= 56n +25n +31m

Simplify to 6n= 2m

M= 3n

**Correct Answer: C**Let there be n students in Class B thus 2n students in Class A

So in class A the total scores are: 28 x 2n= 56n

Total scores in class B is: 25n

Let there be m students in class c thus the total score is 31m

The total is scores across all 3 classes is: 29 x(2n+n+m)= 87n +29m

Thus the overall equation is:

87n + 29m= 56n +25n +31m

Simplify to 6n= 2m

M= 3n

##

Question 18

*Which of the following statements is correct about group 7 elements?*

*High melting and boiling points**Good conductors of heat and electricity**Are unreactive**React vigorously with heated alkali metals**Melting and boiling points decrease down the group*

*A. 1*

*B. 2*

*C. 3*

*D. 4*

*E. 5*

1 is incorrect because they have low melting and boiling points

2 is incorrect because they’re poor conductors of heat and electricity

3 is incorrect because this refers to the noble gases

4 is correct

5 is incorrect because the melting and boiling points increase down the group

**Correct Answer: D**1 is incorrect because they have low melting and boiling points

2 is incorrect because they’re poor conductors of heat and electricity

3 is incorrect because this refers to the noble gases

4 is correct

5 is incorrect because the melting and boiling points increase down the group

##

Question 19

*Which statement(s) correctly describes what happens when body temperature rises in a human?*

*Temperature change is detected by hypothalamus**Arterioles constrict**Hair erector muscles contract**Capillaries move nearer skin surface*

*A. 1 and 2*

*B. 1, 3 and 4*

*C. 1 and 3*

*D. 2 and 3*

*E. 2 and 4*

*F. Only 1*

*G. Only 3*

1 is correct

2 is incorrect because arterioles dilate

3 is incorrect because hair erector muscles relax

4 is incorrect because capillaries in the skin do not move

**Correct Answer: F**1 is correct

2 is incorrect because arterioles dilate

3 is incorrect because hair erector muscles relax

4 is incorrect because capillaries in the skin do not move

##

Question 20

*. Which of the following structures can be found in both prokaryotic and eukaryotic cells?*

*Cell membrane yes**Chromosomal DNA yes**Plasmid DNA**Cell wall. Yes**Nucleus*

A. 1 and 2

A. 1 and 2

*B. 1, 2 and 5*

*C. 1, 2, 3 and 4*

*D. Only 1*

*E. 2, 3 and 5*

*F. 2 and 4*

*G. Only 4*

*H. 4 and 5*

*I. 1, 2 and 4*

1 is correct

2 is correct

3 is incorrect as only prokaryotic cells contain this

4 is correct

5 is incorrect as only eukaryotic cells contain this

**Correct Answer: I**1 is correct

2 is correct

3 is incorrect as only prokaryotic cells contain this

4 is correct

5 is incorrect as only eukaryotic cells contain this

##

Question 21

*What is the correct sequence of genetic engineering of bacterial cells?*

*The molecule now has sticky ends**DNA ligase is used**A useful gene needs to be cut from the DNA**The bacterial plasmid DNA is cut open using the restriction enzyme**The gene is inserted into the plasmid**The recombinant plasmid is inserted into the bacterial cell**This now has a complementary sticky ends**The bacterial cell is cultured**A restriction enzyme is used*

*A. 3, 2, 1, 9, 4, 5, 4, 8, 6*

*B. 3, 9, 1, 4, 7, 5, 2, 6, 8*

*C. 5, 4, 1, 2, 3, 9, 4, 6, 8*

*D. 5, 8, 7, 2, 1, 3, 9, 4, 6*

Correct Answer: B

Correct Answer: B

##

Question 22

*A group of friends raise some money for renovations for their 3 schools: School A, B and C, the money is to be divided in the ratio 1/6 : 5/8: 2/3 respectively. School C received £2000.*

What was the total amount of money raised by the group of friends?

What was the total amount of money raised by the group of friends?

*A. £ 2917*

*B. £ 5375*

*C. £ 4375*

*D. £ 2125*

Find the lowest common multiple which is 24.

Multiply each ratio by 24 to get 4: 15: 16

The original ratio can be simplified to A:B: 2000

To find how much 1 part is calculate 2000/16= 125

Then you know school A received: 125x 4= 500

School B received: 125x 15= 1875

Thus the total is 500+ 1875+ 2000= 4375

**Correct Answer: C**Find the lowest common multiple which is 24.

Multiply each ratio by 24 to get 4: 15: 16

The original ratio can be simplified to A:B: 2000

To find how much 1 part is calculate 2000/16= 125

Then you know school A received: 125x 4= 500

School B received: 125x 15= 1875

Thus the total is 500+ 1875+ 2000= 4375

##

Question 23

*A line, MN, passes through the co-ordinates (6, -4) and (2, 8)*

Which of the following is the equation of the line parallel to MN?

Which of the following is the equation of the line parallel to MN?

*A. -3x + 5*

*B. 3x -6*

*C. 3/2 x +1*

*D. 2/3 x + 4*

*E. – 3/2 x - 9*

You just need to calculate the gradient of the co-ordinates as the parallel line will have an equal gradient

This will be y2-y1/ x2-x1

Thus 8—4/ 2-6= -3

**Correct Answer: A**You just need to calculate the gradient of the co-ordinates as the parallel line will have an equal gradient

This will be y2-y1/ x2-x1

Thus 8—4/ 2-6= -3

##

Question 24

*Which of the following statements are false?*

*Sound waves are longitudinal**In transverse waves the vibration direction is parallel to the wave direction**Seismic waves are transverse*

A. Only 1

B. 2 and 3

C. 1 and 2

D. Only 2

E. 1 and 3

F. Only 3

A. Only 1

B. 2 and 3

C. 1 and 2

D. Only 2

E. 1 and 3

F. Only 3

1 and 3 are correct

2 is incorrect because in transverse waves the vibration direction is perpendicular to the wave direction

**Correct Answer: D**1 and 3 are correct

2 is incorrect because in transverse waves the vibration direction is perpendicular to the wave direction

##

Question 25

*Which type of wave comes after microwaves if the waves are arranged from increasing to decreasing wavelength*

*A.*

*Radio waves*

*B. Visible*

*C. X Rays*

*D. Infra-red*

*E. UV*

**Correct Answer: D**

The order is radio waves, microwaves, infra-red, visible, UV, X Ray, Gamma##

Question 26

*. Which of the following statements are true:*

*Refinery gases are large molecules with a low boiling point**Cyclic Alkanes have the general formula C*ₙ*H*₂ₙ₊₂*You can test for the presence of an unsaturated molecule using Bromine water**Carboxylic acids react with alcohols in the presence of an alkali catalyst*

*A. 1 and 2*

*B. 1, 2 and 3*

*C. 2,3 and 4*

*D. Only 2*

*E. 3 and 4*

*F. Only 3*

*G. 2 and 4*

*H. 1, 3 and 4*

*I. 1 and 4*

*ₙ*

1 is incorrect as refinery gases are small molecules

2 is incorrect as they have the general formula C

**Correct Answer: F**1 is incorrect as refinery gases are small molecules

2 is incorrect as they have the general formula C

*H*₂ₙ

*3 is correct*

4 is incorrect as the catalyst needs to be an acid

4 is incorrect as the catalyst needs to be an acid

##

Question 27

*A student has some FeCl*₃

*, she splits it into 2 test tubes and records her observations with other chemicals to confirm its identity.*

What chemicals will she use to identify the ions and what observations will she make?

What chemicals will she use to identify the ions and what observations will she make?

*Use dilute acid and see a white precipitate**Use sodium hydroxide and observe a green precipitate**Use silver nitrate with nitric acid and observe a cream precipitate**Use an aqueous solution of barium chloride in the presence of dilute hydrochloric acid and observe a white precipitate**Use silver nitrate with nitric acid and observe a white precipitate**Use an aqueous solution of barium chloride in the presence of dilute hydrochloric acid and observe a white precipitate**Use sodium hydroxide and observe a brown precipitate*

*A. 1 and 2*

*B. 2 and 7*

*C. 3 and 4*

*D. 4 and 5*

*E. 1 and 7*

*F. 2 and 6*

*G. 4 and 7*

*H. 6 and 7*

*I. 5 and 7*

*J. 4 and 6*

**Correct Answer: I**