Organisation of the organism (cells) — IGCSE Biology (0970) questions by topic

Which type of cell transports oxygen? A ciliated cell B neurone C palisade mesophyll cell D red blood cell

The diagram shows a plant cell. The cell is rectangular with a thick outer boundary, a single small dark nucleus near one side, several small oval organelles around the cytoplasm,…

Four students used a microscope to view some onion plant cells. Each student drew one of the cells. Each student calculated the actual length of the cell and the magnification of…

The diagram shows a plant cell with four labelled structures A, B, C and D. Label A points to the cytoplasm/cell wall region (upper left), B points to a structure on the right…

Which structures are found in both plant and animal cells? A cell walls and cell membranes B nuclei and cell walls C cytoplasm and chloroplasts D cell membranes and nuclei

Phagocytes and neurones are two types of specialised cell. Which statements are correct? 1 Phagocytes and neurones express the same genes. 2 Both types of cell have the same…

What is a leaf? A a cell B an organ C an organ system D a tissue

A student measured the length of a structure using a microscope. The magnification used was ×250. The image size of the structure was 5.00 mm. What was the actual length of the…

Fig. 1.1 shows some specialised cells (cells A-E, described in the stimulus). State the letters from Fig. 1.1 that identify the cell or cells that: contain an acrosome…

The image shows an animal. The length of the animal in the image is 36 mm. The actual length of the animal is 12 mm. What is the magnification of the image? A ×0.3 B ×3 C ×43.2 D…

The diagram shows a plant cell. Which features show that it is a plant cell? A It has a cell wall and a vacuole. B It has a nucleus and cytoplasm. C It has a nucleus but no…

A scientist investigates the effect of two types of antibiotics on bacteria. The table shows the results: penicillin → cells burst; tetracycline → stops protein synthesis. Which…

Heart muscle cells have a high rate of metabolism. Which structure do they require to be present in high numbers? A chloroplasts B mitochondria C cell walls D vacuoles

The diagram shows a fly. The line XY represents the length of the wing. The length of line XY is 26 mm. The actual size of the wing between X and Y is 4 mm. What is the…

The diagram shows two cells (one plant cell and one animal cell). Which process happens in only one of these cells? A controlling the chemical reactions in the cell B controlling…

The list shows some of the structures contained in cells: • cytoplasm • cell membrane • cell wall • chloroplast How many of these structures are found in the cells of all living…

A student draws a red blood cell. The diameter of the red blood cell they draw is 20 mm. The actual diameter of the red blood cell is 0.008 mm. What is the magnification of the…

Which process is carried out by all organisms? A growth B photosynthesis C sexual reproduction D transpiration

The diagram shows an epidermal cell from an onion plant. The distance between X and Y on the diagram is 60 mm. The actual length of the cell between X and Y is 150 µm. What is the…

Fig. 6.1 is a diagram of a bacterial cell, with a plasmid labelled and answer lines for other structures. Complete Fig. 6.1 by using the words in the list to label these…

Fig. 3.1 shows a drawing of a root hair cell (with mitochondria) and Fig. 3.2 shows a drawing of a palisade cell (with chloroplasts and a mitochondrion). Explain the reasons for…

Which type of cell moves mucus?

The diagram shows a plant cell with four structures labelled A, B, C and D. Which letter indicates the location of the cell membrane?

Which magnification formula is correct?

What is the function of mitochondria in cells?

Which row shows a function of the cell membrane and a function of the cell wall in a palisade cell? cell membrane cell wall --- --- --- A active transport active transport B…

A specimen is viewed under a microscope with a ×10 magnification. The specimen image measures 30 mm. What is the actual size of the specimen?

The diagram shows a type of plant cell with cytoplasm, nucleus, vacuole, and chloroplasts labelled. In which tissue is this cell found?

Which group of organs belongs to the same organ system?

What are characteristics of all organisms? A egestion and excretion B egestion and nutrition C excretion and nutrition D excretion and photosynthesis

Which row shows structures that are present in both root hair cells and palisade mesophyll cells? The table considers cell wall, chloroplasts, cytoplasm and vacuole, with rows A–D…

The diagram shows a cell at ×1500 magnification, measured against a scale where the cell spans about 5 cm on the diagram. What is the actual size of the cell? A 0.003 mm B 0.03 mm…

Living animals release carbon dioxide. This is an example of which life process? A excretion B movement C nutrition D sensitivity

Which structures are found in the cells of all living organisms? 1 cell membrane 2 chloroplast 3 cytoplasm A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

A diagram of a human red blood cell is shown. The length of line XY on the diagram is 40 mm. The actual width of the cell is 0.008 mm. What is the magnification of the diagram? A…

What are characteristics of all organisms? A egestion and excretion B egestion and nutrition C excretion and nutrition D excretion and photosynthesis

Which row shows structures that are present in both root hair cells and palisade mesophyll cells? The table considers cell wall, chloroplasts, cytoplasm and vacuole, with rows A–D…

The photomicrograph shows a plant cell. The length of line XY is 90 mm. The actual length of the cell is 30 µm. What is the magnification of the photomicrograph? A ×300 B ×3000 C…

Which process occurs both in plants and in animals? A excretion B phagocytosis C photosynthesis D transpiration

Which structures are found in the cells of all living organisms? 1 cell membrane 2 chloroplast 3 cytoplasm A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

In the diagram of the palisade cell, the distance between X and Y is 20 mm. The actual width of the cell between X and Y is 40 µm. What is the magnification of the diagram? A ×200…

Fig. 2.1 is a diagram showing some of the structures found in a plant cell, with structures labelled L, M, N, Q, R, S, T. Table 2.1 shows the names of some plant cell structures,…

Fig. 1.1 is a diagram of part of a cross-section of a leaf, with layer A, layer B, layer C and stomata indicated. Explain why a leaf is considered to be an organ.

Fig. 5.1 is a photomicrograph of a structure found in animal and plant cells, with the structure labelled A. State the name and function of the cell structure labelled A in Fig.…

Which processes are characteristics of all living organisms? 1 digestion 2 respiration 3 excretion A 1, 2 and 3 B 1 only C 2 and 3 only D 2 only

Which features are possessed by all plant cells? The table considers a cell wall and chloroplasts (key: shaded = yes, blank = no). A B C D

The diameter of an egg is 6.5 cm. A student draws the egg. The diameter of the egg in the drawing is 19.5 cm. What is the magnification of the drawing? A 0.3 B 3.0 C 6.5 D 300

Which processes are characteristics of all living organisms? 1 digestion 2 respiration 3 excretion A 1, 2 and 3 B 1 only C 2 and 3 only D 2 only

Which features are possessed by all plant cells? The table considers a cell wall and chloroplasts (key: shaded = yes, blank = no). A B C D

The length of a bacterium in a diagram is 50 mm. The magnification of the diagram is ×5000. What is the actual length of the bacterium? A 1 µm B 10 µm C 100 µm D 1000 µm