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WorksheetsWhat do we know?
Total questions: 7
Worksheet time: 4mins
What is the role of red blood cells?
Releasing chemical signals
Transporting oxygen and nutrients
Fighting pathogens in our body
Storing genetic information
Oxygen is a diatomic element. What is a diatomic element?
2 atoms of the same element bonded together.
3 atoms of the same element bonded together.
An element with two electrons on its valence electron shell.
An element with a full valence shell.
Why are noble gases so stable?
Their number of protons and neutrons are equal.
At normal temperatures they remain in the gas phase.
They have a high atomic mass.
Their valence shell is completely full.
What is the most numerous protein found in red blood cells?
Keratin
Collegen
Hemoglobin
Insulin
Where does gas exchange occur in the human body? Select the best answer!
Lungs
Trachea
Alveoli
Bronchioles
Over time, organisms change. Adaptations arise leading to the species success. What following term best describes this idea?
Genetic modification
Deleterious mutations
Natural selection
Divine intervention
Select one answer that best supports the claim that whales had land-dwelling ancestors.
Whales have powerful flippers
Whale cells require oxygen to carry out respiration
Whales breath oxygen and share skeletal elements with other land-dwelling mammals
Whales have the second largest brain size to body size ratios on the planet
