Biology Topics 1 and 2
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1 Biology Topics and 2 Practise Questions 30 minutes 30 marks These are GCSE questions but very simiilar to the igcse ones. Page of 2
2 Q. The diagram shows an animal cell. (a) (i) Name structures A and B by choosing the correct words from the box. cell membrane cell wall cytoplasm nucleus vacuole Structure A... Structure B... (2) (ii) Which structure named in the box controls the passage of substances in and out of the cell?... () Distance P to Q on the diagram is the diameter of the cell. This distance was measured on three cells using a microscope. The results were as follows: cell : 63 micrometres cell 2: 78 micrometres cell 3: 69 micrometres Calculate the average diameter of these cells. Show clearly how you work out your final answer. Average diameter =... micrometres (2) (Total 5 marks) Page 2 of 2
3 Q2. The diagram shows a cell from the lining of the lung. This cell is specialised to allow gases to pass through quickly. (a) Use words from the box to label structures A, B and C. cell membrane chloroplast cytoplasm mitochondria nucleus (3) (i) Which feature of this cell allows oxygen to pass through quickly? Put a tick ( ) in the box next to your choice. It is thin. It has a large nucleus. It has many mitochondria. () (ii) Complete the sentence by drawing a ring around the correct answer in the box. Oxygen passes through this cell by diffusion osmosis respiration () (Total 5 marks) Page 3 of 2
4 Q3. The diagram shows a group of muscle cells from the wall of the intestine. (a) On the diagram, use words from the box to name the structures labelled A, B and C. cell membrane cell wall chloroplast cytoplasm nucleus (3) How are these muscle cells adapted to release a lot of energy? (2) (Total 5 marks) Q4. Diagram shows a cell from a leaf. Diagram Page 4 of 2
5 (a) How is the leaf cell specialised to carry out photosynthesis? Tick ( ) one box. It has a permanent vacuole. It has many chloroplasts. It has cytoplasm. It has many mitochondria. () Diagram 2 shows another type of plant cell. Diagram 2 Give two ways in which this cell is different from an animal cell (2) (Total 3 marks) Q5. This question is about cells. (a) (i) The diagram shows a sperm cell. Page 5 of 2
6 Use words from the box to label parts A and B. cell membrane cytoplasm nucleus (2) (ii) The diagram shows a cell from a leaf. Give the letters of two parts of the leaf cell which would not be found in a sperm cell. and. () Sperm cells have many mitochondria. Why do sperm cells need many mitochondria? Tick ( ) one box. Sperm cells are involved in fertilisation. Sperm cells are produced in very large numbers. Sperm cells need a lot of energy to swim. () (Total 4 marks) Q6. The drawing shows the cell of a bacterium. Page 6 of 2
7 (a) List A gives the four structures labelled on the diagram. List B includes information about each structure. Draw one line from each structure in List A to the correct information about the structure in List B. List A Structure List B Information (4) Give two differences between an animal cell and the cell of a bacterium (2) Page 7 of 2
8 (c) The diagrams show cells containing and surrounded by oxygen molecules. Oxygen can move into cells or out of cells. Into which cell, A, B, C or D, will oxygen move the fastest? Write the correct letter, A, B, C or D, in the box. () (d) Complete the following sentence. Oxygen is taken into the cell by the process of... () (Total 8 marks) Page 8 of 2
9 M. (a) (i) A = nucleus B = (cell) membrane (ii) (cell) membrane 70 if correct answer, ignore working or lack of working for mark 2 [5] M2. (a) A nucleus B (cell) membrane C cytoplasm (i) it is thin (ii) diffusion [5] M3. (a) A nucleus B C (cell) membrane cytoplasm Page 9 of 2
10 any two from: (contain mitochondria many (mitochondria) respiration (occurs in mitochondria) 2 [5] M4. (a) it has many chloroplasts. (has) cell wall (has) vacuole or large / permanent vacuole do not allow chloroplasts assume plant cell throughout accept converse for animal cell [3] M5. (a) (i) A cytoplasm B nucleus accept clear indications (ii) any two from: two required for mark P R T accept lower case letters sperm cells need a lot of energy to swim [4] Page 0 of 2
11 M6. (a) all four correct = 4 marks three correct = 3 marks two correct = 2 marks one correct = mark extra line from a statement cancels the mark 4 any two from: nucleus no cell wall separate chromosomes 2 (c) A (d) diffusion [8] Page of 2
12 Page 2 of 2
Reason... (2) Reason... (2) Reason... (2)
1 The figure below shows four different types of cell. (a) Which cell is a plant cell? Give one reason for your answer. Cell... Reason... (b) Which cell is an animal cell? Give one reason for your answer.
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