Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells...

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1 A biologist made a slide of some epidermal cells from a scale leaf of an onion bulb. Fig. 4.1 is a drawing that the biologist made of one of the cells. D A B C Fig. 4.1 (a) Table 4.1 shows the functions of the structures within a plant cell. Complete the table by: naming the part of the cell that carries out each function using the letters from Fig. 4.1 to identify the part of the cell named. Table 4.1 function letter from Fig. 4.1 name resists the turgor pressure of the cell controls the activities of the cell site of the chemical reactions of the cell including synthesis of proteins [3] PhysicsAndMathsTutor.com

Transcript of Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells...

Page 1: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

1 A biologist made a slide of some epidermal cells from a scale leaf of an onion bulb.

Fig. 4.1 is a drawing that the biologist made of one of the cells.

DA

B

C

Fig. 4.1

(a) Table 4.1 shows the functions of the structures within a plant cell.

Complete the table by:

naming the part of the cell that carries out each function

using the letters from Fig. 4.1 to identify the part of the cell named.

Table 4.1

function letter from Fig. 4.1 name

resists the turgor pressure of the cell

controls the activities of the cell

site of the chemical reactions of the cell including synthesis of proteins

[3]

PhysicsAndMathsTutor.com

Page 2: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

(b) The biologist added a few drops of concentrated salt solution to the cells on the slide and tooka photograph of the cells, as shown in Fig. 4.2.

Fig. 4.2

(i) With reference to Fig. 4.2, describe the effect on the plant cells of adding a concentratedsalt solution.

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(ii) Use the term water potential to explain the effect you have described.

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Page 3: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B.

nucleus

BA

Fig. 3.1

(a) State the function of red blood cells.

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(b) There is a nucleus present in each of the red blood cells of the bird, as shown in Fig. 3.1.

(i) State the function of a nucleus.

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(ii) Human red blood cells do not contain a nucleus.

State an advantage of this.

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PhysicsAndMathsTutor.com

Page 4: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

Red blood cells from humans were placed into three test-tubes. Each test-tube contained a salt solution of a different concentration. A sample was taken from each test-tube and viewed using a microscope. The results are shown in Fig. 3.2.

0.10salt concentration / mol dm–3 0.15 0.20 0.25

Fig. 3.2

(c) (i) Describe the appearance of the red blood cells in the 0.15 mol dm−3 salt solution and thered blood cells in the 0.20 mol dm−3 salt solution.

0.15 mol dm−3 .....................................................................................................................

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0.20 mol dm−3 .....................................................................................................................

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(ii) The red blood cells in the 0.10 mol dm−3 salt solution burst.

Explain why the red blood cells burst.

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(iii) Suggest why a plant cell in 0.10 mol dm−3 salt solution would not burst.

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PhysicsAndMathsTutor.com

Page 5: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

(d) Some people in accidents lose a lot of blood. Doctors give patients fluid to replace lost blood.

(i) Use the information in Fig. 3.2 to predict and explain the concentration of fluid replacementgiven to patients who have lost blood.

prediction ...........................................................................................................................

explanation ........................................................................................................................

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(ii) Describe the process of blood clotting.

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[Total: 14]

PhysicsAndMathsTutor.com

Page 6: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

3 Leaves are made of tissues.

(a) Define the term tissue.

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Fig. 4.1 is a photograph of a transverse section of a leaf, showing the upper and lower surfaces.

leaf hairon upper

surface

B

stomata

A

leaf hairon lowersurface

Fig. 4.1

(b) Name:

(i) tissue A

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(ii) the process by which gases travel through the stomata.

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PhysicsAndMathsTutor.com

Page 7: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

(c) Describe how root hair cells differ from the cells labelled B in Fig. 4.1.

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(d) Outline how water that has entered a root hair cell reaches the stomata.

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(e) Leaf hairs, shown in Fig. 4.1, help to increase the humidity near the leaf surface.

(i) Compare the leaf hairs on the upper leaf surface with the leaf hairs on the lower leafsurface.

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(ii) Explain the importance of increasing humidity near the leaf surface.

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[Total: 12]PhysicsAndMathsTutor.com

Page 8: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

4 Fig. 1.1 shows a common emerald dove, Chalcophaps indica.

Fig. 1.1

(a) Two distinguishing features of birds are beaks and wings.

State one other feature shown only by birds that is visible in Fig. 1.1.

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PhysicsAndMathsTutor.com

Page 9: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

(b) Birds show variation in the sizes and shapes of their beaks. A beak is composed of an uppermandible and a lower mandible.

Fig. 1.2 shows the heads of seven different species of bird.

A

C

E

G

D

F

B

lowermandible

uppermandible

width of head

PhysicsAndMathsTutor.com

Page 10: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

Use the key to identify each species. Write the letter of each species (A to G) in the correct box beside the key. One has been done for you.

key

1 (a) beak is shorter than the width of the head

go to 2

(b) beak is longer than the width of the head

go to 4

2 (a) upper mandible is same length as the lower mandible

Spinus tristis

(b) upper mandible is longer than the lower mandible

go to 3

3 (a) lower mandible is about half the length of the upper mandible

Ara ararauna A

(b) lower mandible is more than half the length of the upper mandible

Aquila chrysaetos

4 (a) both mandibles widen at the end of the beak

Platalea regia

(b) both mandibles are a similar width along their whole length

go to 5

5 (a) beak is straight Trochilus polytmus

(b) beak is curved go to 6

6 (a) beak curves upwards Recurvirostra americana

(b) beak curves downwards Phoenicopterus minor

[3]

PhysicsAndMathsTutor.com

Page 11: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

(c) Fig. 1.3 shows the events that occur during sexual reproduction in birds. The numbers inbrackets indicate the number of chromosomes in the nuclei of the cells of the commonemerald dove.

adult female (80)

processA

adult male (80)

processA

sperm (40)

cell B (80)

embryo (80)

hatching

egg (40)

young bird (80)

Fig. 1.3

(i) Name process A and cell B.

A ........................................................................................................................................

B ........................................................................................................................................[2]

(ii) State why cell B is described as a diploid cell.

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(iii) The embryo of the bird develops from cell B.

State what is meant by the term development.

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PhysicsAndMathsTutor.com

Page 12: Fig. 4.1 (a) Table 4.1 shows the functions of the ... · 2 Fig. 3.1 shows images of red blood cells from a human, A, and a bird, B. nucleus A B Fig. 3.1 (a) State the function of

(iv) Sexual reproduction usually leads to variation.

Explain why variation is an advantage for a species such as the common emerald dove.

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PhysicsAndMathsTutor.com


1 (a) Fig. 4.1 shows a top view of ... - Physics & Maths Tutor

1 (a) Fig. 4.1 shows a top view of ... - Physics & Maths Tutor

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Fig. 4.1 (a) K - Physics & Maths Tutor

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