Question 1:
(a) A student watches some scary movies.
The average pulse rate of the student is measured during each movie.
The highest pulse rate of the student is also recorded.
Table 1.1 shows the results.
The student has a ‘flight or fight’ response to the movies causing adrenaline to be released.
(i) Identify the movie in Table 1.1 that results in the lowest average pulse rate.
……………………. [1]
(ii) Identify the movie in Table 1.1 that results in the greatest release of adrenaline.
……………………. [1]
(iii) Movie D lasts 2 hours.
Using the average pulse rate, calculate the total number of heart beats during the movie.
total = ………………………………………… beats [2]
(iv) Circle the target organ for adrenaline that causes the results in Table 1.1.
heart kidney ovary stomach skin
(b) State two other effects of adrenaline on the body.
Do not include the effect on pulse rate.
1 ………………………………………………………………………………………………………………………………
2 ………………………………………………………………………………………………………………………………
[2]
(c) State the component of blood that transports the hormone adrenaline.
…………………………………………………………………………………………………………………………… [1]
(d) The ‘flight or fight’ situation is a response to a change in the environment.
This is an example of one of the characteristics of living things.
(i) State the name of this characteristic.
……………………………………………………………………………………………………………………. [1]
(ii) State the name of one other characteristic of living things.
……………………………………………………………………………………………………………………. [1]
Ans :
1(a)(i) B ; 1
1(a)(ii) C ; 1
1(a)(iii) 2 hours = 120 minutes ;
(120
80) = 9600 ;
1(a)(iv) heart circled ; 1
1(b) any two from:
increased breathing rate ;
widening of pupils ;
AVP ;;
1(c) plasma ; 1
1(d)(i) sensitivity ; 1
1(d)(ii) any one from:
movement ;
respiration ;
growth ;
reproduction ;
excretion ;
nutrition ;
Question 2:
(a) The list gives the names of seven elements.
calcium
carbon
copper
oxygen
nitrogen
potassium
sulfur
Answer the questions about these elements.
Each element may be used once, more than once or not at all.
State which element:
(i) is in Group I of the Periodic Table.
……………………………………………………………………………………………………………………. [1]
(ii) is in diamond.
……………………………………………………………………………………………………………………. [1]
(iii) is 78% of clean air.
……………………………………………………………………………………………………………………. [1]
(iv) gives a lilac flame test.
……………………………………………………………………………………………………………………. [1]
(v) is used in electroplating.
……………………………………………………………………………………………………………………. [1]
(vi) is used in the manufacture of sulfuric acid.
……………………………………………………………………………………………………………………. [1]
(b) Atoms contain protons, neutrons and electrons.
State which of these particles:
are in shells around the nucleus ………………………………….
have a positive charge ………………………………….
have the smallest mass. ………………………………….
Ans : 2(a)(i) potassium ; 1
2(a)(ii) carbon ; 1
2(a)(iii) nitrogen ; 1
2(a)(iv) potassium ; 1
2(a)(v) copper ; 1
2(a)(vi) sulfur ; 1
2(b) electrons ;
protons ;
electron ;
Question 3:
(a) Doctors use ionising and non‐ionising radiations in hospitals.
(i) Table 3.1 lists some radiations.
2 correct ;
3 correct ;
Put a tick (✓) in each row of Table 3.1 to show which radiations are ionising and a
cross (✗) to show which radiations are not ionising.
Two have been done for you. [2]
(ii) Describe one adverse effect of ionising radiations on living things.
………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………. [1]
(iii) Place alpha (α), beta (β) and gamma (γ) radiations in order of their relative penetrating
ability.
most penetrating ……………………………….
……………………………….
least penetrating ……………………………….
(iv) State one use of X‐rays in a hospital.
…………………………………………………………………………………………………………………….
…………………………………………………………………………………………………………………….
(v) Ultrasound waves are used to scan unborn babies.
Ultrasound waves have a frequency above the maximum audible frequency for a human.
Suggest a frequency for ultrasound waves.
State the unit of your answer.
frequency = …………………………………………….. unit …………..
(b) (i) Gamma (γ) radiation is used in hospitals to destroy cancer cells.
Fig. 3.1 shows an incomplete electromagnetic spectrum.
Write gamma (γ) radiation in its correct place.
(ii) State the region of the electromagnetic spectrum where the waves have the lowest
frequency.
……………………………………………………………………………………………………………………. [1]
(c) A radioactive isotope of iodine, iodine‐123, is used by a doctor to examine the thyroid gland of
a patient.
The nuclide notation for the isotope is 123
53I.
State what the numbers 123 and 53 represent.
123 …………………………………………………………………………………………………………………………..
53 …………………………………………………………………………………………………………………………….
Ans : 3(a)(i)
3(a)(ii) cancer / mutation ;
3(a)(iii) gamma
beta
alpha ;
3(a)(iv) to view internal body structures ;
3(a)(v) any value higher than 20 000 ;
Hz ;
3(b)(i)
–radiation in left hand box ;
3(b)(ii) radio waves ; 1
3(c) 123 is nucleon number ;
53 is proton number ;
Question 4:
4 (a) Fig. 4.1 is a diagram of the female reproductive system in humans.
The boxes on the left show the letters of some of the parts in Fig. 4.1.
The boxes on the right show some functions.
Draw one line from each letter to its function.
(b) A survey records the length of the menstrual cycle in a sample of females.
Fig. 4.2 shows a bar chart of the results.
(i) State the most frequent length of the menstrual cycle shown in Fig. 4.2.
…………………………………. [1]
(ii) State the number of females that have a 26‐day menstrual cycle shown in Fig. 4.2.
…………………………………. [1]
(c) State the name of the female gamete in humans.
…………………………………………………………………………………………………………………………… [1]
(d) The list shows several processes that occur before the development and birth of a baby.
Put the stages in the correct order.
Two have been done for you.
fertilisation
formation of embryo
formation of zygote
implantation
release of female gamete
(e) State where fertilisation occurs in plants.
……………………………………………………………………………………………………………………………
Ans :
4(b)(i) 27 (days) ; 1
4(b)(ii) 9 ;
4(c) egg / ovum ; 1
4(d) release of female gamete
fertilisation
formation of zygote
formation of embryo
implantation
1 or 2 correct ;
3 correct ;
2
4(e) ovule ;
Question 5:
(a) Ethanol has the formula C2H5OH.
Complete Fig. 5.1 to show the structure of an ethanol molecule.
Fig. 5.1
(b) Ethanol is used as a fuel.
(i) State one other use for ethanol.
……………………………………………………………………………………………………………………. [1]
(ii) Write the word equation for the complete combustion of ethanol.
…………………………. + …………………………. …………………………. + ………………………….
[2]
(iii) The combustion of ethanol is an exothermic reaction.
State what is meant by an exothermic reaction.
………………………………………………………………………………………………………………………….
………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………. [1]
(c) Ethanol is made from ethene.
Ethene reacts at high temperatures with substance X in the presence of a catalyst.
(i) State the name of substance X.
……………………………………………………………………………………………………………………. [1]
(ii) Describe the effect of a catalyst on chemical reactions.
………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………. [1]
(iii) State one other method of making ethanol.
……………………………………………………………………………………………………………………. [1]
(d) Ethanol is a liquid at room temperature.
Describe the motion and separation of the particles in ethanol.
motion ………………………………………………………………………………………………………………………
separation …………………………………………………………………………………………………………………
Ans : 5(a)
C–O–H correct ;
all else correct ;
5(b)(i) solvent ; 1
5(b)(ii) ethanol + oxygen
→ carbon dioxide + water
ethanol and oxygen ;
carbon dioxide and water ;
2
5(b)(iii) thermal energy released ; 1
5(c)(i) steam / water ; 1
5(c)(ii) increase rate of reaction ; 1
5(c)(iii) fermentation ;
Question 6:
(a) A farmer drives his tractor in a field.
Fig. 6.1 shows the forces J, K, L and M acting on the tractor as the tractor accelerates towards the right.
(i) State which force J, K, L or M is the weight of the tractor.
…………………………. [1]
(ii) Explain why force K must be greater than force M.
………………………………………………………………………………………………………………………….
…………………………………………………………………………………………………………………….
(b) Fig. 6.2 shows a speed‐time graph for the tractor as it travels across the field.
(i) Describe the motion of the tractor during the section PQ.
……………………………………………………………………………………………………………………. [1]
(ii) Calculate the distance travelled by the tractor during section QR.
(c) The tractor pulls a tank full of water.
The mass of the water is 2500kg.
The density of water is 1000kg/m3.
Calculate the volume of the water.
volume = ……………………………………………. m3 [2]
(d) Suggest two renewable sources of energy that the farmer uses to generate electricity for the
farm.
1 ………………………………………………………………………………………………………………………………
2 ………………………………………………………………………………………………………………………………
Ans :
6(a)(i) L ; 1
6(a)(ii) resultant force needed to cause acceleration / change in speed (to the right) ; 1
6(b)(i) tractor has constant acceleration ; 1
6(b)(ii) distance = speed
time (in any form) or 6
70 ;
= 420 (m) ;
2
6(c) volume = mass / density (in any form) or 2500 / 1000 ;
= 2.5 (m3) ;
2
6(d) wind ;
solar ;
Question 7:
(a) A student investigates the effect of light on an aquatic plant.
The student counts the number of bubbles of gas released in one minute by the aquatic plant kept in the light.
The experiment is repeated with the aquatic plant kept in the dark.
Table 7.1 shows the results.
(i) Complete the sentences to explain the results shown in Table 7.1.
The aquatic plant releases more bubbles of ………………………………………… gas when kept in the light.
This is because the process of ………………………………………… requires energy from light.
This energy is used to react the raw materials …………………………………………
and ………………………………………… .
This process takes place in plant cell structures called ………………………………………… .
(ii) State the name of the response that causes plants to grow towards light.
…………………………………………………………………………………………………………………….
(b) Fig. 7.1 is a photomicrograph of a cross‐section through a leaf.
(i) State the name of the part labelled X in Fig. 7.1.
…………………………………………………………………………………………………………………….
(ii) State the names and functions of the two transport tissues contained in the part labelled Y in Fig. 7.1.
name 1 ………………………………………………………………………………………………………………
function ………………………………………………………………………………………………………………
name 2 ………………………………………………………………………………………………………………
function ………………………………………………………………………………………………………………
(c) Describe the importance of nitrate ions in the synthesis of proteins.
…………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………
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