Question 1
Which cell structure contains genetic material and controls cell activities?
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Nucleus
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Cytoplasm
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Cell membrane
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Mitochondrion
Question 2
In most animal and plant cells, where does aerobic respiration release energy?
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Mitochondria
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Ribosomes
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Nucleus
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Cell wall
Question 3
Which organelle contains chlorophyll for photosynthesis?
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Chloroplast
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Mitochondrion
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Nucleus
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Vacuole
Question 4
Which structure in plant cells is made of cellulose and helps support the cell?
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Cell wall
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Cell membrane
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Cytoplasm
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Nucleus
Question 5
What is the main function of the cell membrane?
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To control movement of substances into and out of the cell
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To release energy by respiration
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To make proteins
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To carry genetic information
Question 6
Which structure is found in both animal cells and plant cells?
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Cytoplasm
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Cell wall
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Chloroplast
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Large permanent vacuole
Question 7
Which sequence shows levels of organisation from smallest to largest?
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\(\text{Cell} \to \text{tissue} \to \text{organ} \to \text{organ system} \to \text{organism}\)
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\(\text{Tissue} \to \text{cell} \to \text{organ} \to \text{organism} \to \text{organ system}\)
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\(\text{Cell} \to \text{organ} \to \text{tissue} \to \text{organ system} \to \text{organism}\)
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\(\text{Organism} \to \text{organ system} \to \text{organ} \to \text{tissue} \to \text{cell}\)
Question 8
What is a group of similar cells working together called?
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Tissue
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System
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Organism
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Organelle
Question 9
How is the stomach best described?
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As an organ
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As a tissue
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As an organ system
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As an organelle
Question 10
The mouth, oesophagus, stomach and intestines are part of which organ system?
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Digestive system
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Respiratory system
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Circulatory system
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Nervous system
Question 11
What adaptation helps a root hair cell absorb water effectively?
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A long projection that increases surface area
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A thick waxy outer layer
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A thick cell wall that blocks water uptake
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A high number of chloroplasts
Question 12
Why does a sperm cell contain many mitochondria?
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To release energy for swimming
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To make chlorophyll
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To store large amounts of water
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To carry oxygen around the body
Question 13
Which statement about mature human red blood cells is correct?
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They have no nucleus
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They contain chloroplasts
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They have a thick cellulose wall
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They are larger than most white blood cells
Question 14
What is diffusion?
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The net movement of particles from a high concentration to a low concentration
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The movement of water from a dilute solution to a concentrated solution
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The movement of particles from a low concentration to a high concentration using energy
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The breaking down of food using enzymes
Question 15
Which process moves water molecules through a partially permeable membrane from a dilute solution to a concentrated solution?
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Osmosis
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Diffusion
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Active transport
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Respiration
Question 16
A plant cell is placed in pure water. What usually happens to the cell?
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It becomes turgid
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It shrinks and becomes plasmolysed
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It bursts because it has no wall
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It loses its nucleus
Question 17
A plant cell is placed in a concentrated salt solution. What usually happens?
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Water leaves the cell and the membrane pulls away from the wall
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Water enters the cell and it becomes turgid
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The cell divides rapidly
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The cell wall dissolves
Question 18
A microscope image is \(30\,\mathrm{mm}\) and the real object is \(3\,\mathrm{mm}\). What is the magnification?
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\(10\times\)
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\(0.1\times\)
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\(90\times\)
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\(27\times\)
Question 19
An eyepiece lens is \(10\times\) and an objective lens is \(40\times\). What is the total magnification?
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\(400\times\)
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\(50\times\)
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\(4\times\)
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\(4000\times\)
Question 20
Which plant tissue transports dissolved sugars around the plant?
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Phloem
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Xylem
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Epidermis
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Palisade mesophyll