Which of the following orders would be correct showing the size of structures from biggest to smallest?
chromosome → red blood cell → stomach → gene → nucleus
stomach → red blood cell → gene → chromosome
stomach → red blood cell → nucleus → chromosome → gene
gene → chromosome → red blood cell → stomach
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Which of the following terms would be correct to describe a leaf, a root and stem?
Cell
Tissue
Organ
Organ system
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The diagram below shows part of an organism (ciliated epithelium).
What term would correctly describe the level of organisation of the structure in the diagram above?
Cell
Organelle
Organ
Organ system
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Which description of the liver below is correct?
The liver is a cell, containing several tissues, which forms part of the digestive system.
The liver is an organ, containing several systems, which forms part of the digestive tissue
The liver is an organ, containing several tissues, which forms part of the digestive system.
The liver is a cell, containing several systems, which forms part of the digestive system.
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Which row of the table below correctly matches a structure to its level of organisation within an organism?
| tissue | organ | system |
A | phloem | small intestine | digestive |
B | red blood cell | xylem | stomach |
C | small intestine | sperm | digestive |
D | root hair | leaf | heart |
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Which row of the table below correctly matches functions to some of the components in a root hair cell?
| cell wall | cell membrane | mitochondria |
A | support | active transport | energy release |
B | energy release | active transport | nutrition |
C | support | active transport | nutrition |
D | active transport | support | energy release |
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A list of subcellular structures is given below.
1 | nucleus |
2 | ribosome |
3 | vacuole |
4 | chloroplast |
A plant cell and an animal cell are observed under a light microscope.
Which of the above structures would always be visible in a plant cell?
1, 2 & 4
1, 3 & 4
1 & 3 only
1 & 4 only
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The salivary glands contain cells which are responsible for producing salivary amylase, a digestive enzyme.
Which organelles would be present in large numbers in cells of the salivary glands?
mitochondria and nuclei
nuclei and ribosomes
mitochondria and vacuoles
mitochondria and ribosomes
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Which row of the table below correctly describes the structures present in a bacterial cell?
| cell membrane | cell wall | chromosome | nucleus |
A | ✘ | ✔ | ✘ | ✘ |
B | ✔ | ✔ | ✔ | ✘ |
C | ✔ | ✔ | ✘ | ✘ |
D | ✔ | ✘ | ✘ | ✔ |
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Which row of the table below correctly describes a spongy mesophyll cell?
| contains chloroplasts for photosynthesis | loses water by transpiration | ideal surface area for gas exchange |
A | ✘ | ✔ | ✔ |
B | ✔ | ✔ | ✘ |
C | ✔ | ✔ | ✔ |
D | ✔ | ✘ | ✘ |
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1 markA student looks at an image of a cross-section of a leaf in her Biology textbook.
The actual thickness of this leaf is 450 µm, but the image in the textbook has a depth of 83 mm.
What would be the correct magnification of the image?
× 5
× 184
× 0.184
× 500
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1 markA student looks at the image below in his textbook.
The image is 43 mm wide and has been magnified 2500 times.
What is the actual width of the cell?
0.0172 µm
1.72 mm
58.1 mm
17.2 µm
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Eukaryotic cells contain mitochondria (a mitochondrion is shown below).
Which diagram below correctly shows the position of mitochondria in a plant cell?
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The image below shows a palisade mesophyll cell found in the leaves of plants.
Which row of the table below correctly shows the structures labelled on the cell in the image above?
| X | Y | Z |
A | mitochondrion | vacuole | nucleus |
B | chloroplast | nucleus | vacuole |
C | chloroplast | vacuole | nucleus |
D | mitochondrion | nucleus | vacuole |
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1 markA student cut through a section through a plant, finding a group of long, microscopic structures which lacked end walls or any cell contents.
Which row of the table below correctly identifies the structure described in the statement above?
| identification | reason |
A | xylem vessels | large surface area to absorb as much water by osmosis as possible |
B | root hair cells | they can support the plant better without cytoplasm, mitochondria provide energy |
C | root hair cells | hollowed, lignified tubes to allow uninterrupted flow of water |
D | xylem vessels | hollowed, lignified tubes to allow uninterrupted flow of water |
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