Digestive detectives
In which part of the digestive system does digestion begin?
The mouth
Which organelle absorbs light energy for photosynthesis?
The chloroplast
How many players does one football team normally have on the pitch at the start of a match?
11
How many sides does a hexagon have?
Six
In which country is Eiffel tower located?
France
Which bag-like organ churns food and mixes it with gastric juice?
The stomach
A drop of food colouring spreads through still water without stirring. What process causes this?
Diffusion
Which country does Achraf Hakimi represent in international football?
Morocco
Which planet is known as the Red Planet?
Mars
On which continent is Egypt located?
Africa
What acid is found in gastric juice?
Hydrochloric acid
Put these in order from smallest to largest: organ, organism, cell, tissue, organ system.
Cell → tissue → organ → organ system → organism.
What is it called when one player scores three goals in a match?
A hat-trick.
What instrument is used to measure temperature?
A thermometer
What is the largest ocean on Earth?
The Pacific Ocean
What are villi, and how do they help the small intestine absorb nutrients?
Tiny finger-like projections that increase the surface area for absorption.
Which gas do plants absorb from the air for photosynthesis?
Carbon dioxide
Which two clubs play in the Spanish rivalry known as “El Clásico”?
Real Madrid and Barcelona.
What number comes next: 3, 6, 12, 24, ___?
48—each number is double the previous number.
Which country is home to the cities of Rome, Venice, and Milan?
Italy
What pushes swallowed food through the esophagus toward the stomach?
Peristalsis—waves of muscle contraction.
Why does a muscle cell usually contain more mitochondria than a skin cell?
Muscle cells need more energy for contraction. Mitochondria carry out aerobic respiration to release energy.
Which country won the men’s FIFA World Cup in 2022?
Argentina
Which is heavier: 1 kg of feathers or 1 kg of iron?
Neither—they have the same mass: 1 kg.
Which sea lies between northeastern Africa and the Arabian Peninsula?
The Red Sea