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  1. Problems
  2. /Life Processes
  3. /Respiration

Respiration

Biology
+ Upload a Problem
More in Life ProcessesNutritionRespirationTransport in Living OrganismsExcretion
12 problems
Type:
1.
An oxygen molecule would take about three years to diffuse from your lungs to your toes. New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Medium
2.
Take a simple model: the two lungs hold 300 million alveoli, and each one is a tiny ball 0.25 mm… New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Hard
3.
At rest, Dev takes 16 breaths a minute, with 0.5 L of air in each. New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Medium
4.
Put these in the order in which air passes them: bronchi, nostrils, alveoli, trachea, pharynx… New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Easy
5.
A carp uses 20 mL of oxygen in an hour, and its gills take out 80% of the oxygen in the water. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Hard
6.
Name the breathing organ of each, and say whether it takes oxygen from air or from water: (a) a… New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Easy
7.
A small pond is full of water plants and fish. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Medium
8.
One litre of air holds about 210 mL of oxygen. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Medium
9.
(a) 8 glucose molecules are broken down fully with oxygen. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Hard
10.
In the last minutes of a football match, Imran sprints again and again. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Medium
11.
Two cells each break down 15 glucose molecules. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Medium
12.
Arjun mixes flour, water, a spoon of sugar and a little yeast. New
High School (9–10), General · RespirationStemPy LabStemPy Lab
Easy