TED-Ed: Why are human bodies asymmetrical? - Leo Q. Wan

The video explores the concept of asymmetry in nature, particularly in human anatomy, where vital organs are arranged asymmetrically. It delves into embryonic development, explaining how asymmetry arises from cilia movement and gene activation. The video also examines cellular and molecular asymmetry, highlighting the role of chirality in proteins and biomolecules. Asymmetry is shown to be crucial for the proper functioning of organisms, despite the aesthetic appeal of symmetry.

Which of the following is an example of asymmetry in the human body?

• The brain has similar-looking sides but different functions

• The liver is on the left side

• The heart is located centrally

• Both lungs have the same number of lobes

What role do cilia play in the development of asymmetry in embryos?

• They cause the embryo to rotate

• They are responsible for the embryo's symmetrical appearance

• They push fluid to activate genes on one side

• They help in the symmetrical growth of organs

How does the heart develop its asymmetrical shape during embryonic growth?

• It remains a straight tube throughout development

• It bends into a c-shape and rotates to the right

• It grows equally on both sides

• It forms from two separate tubes

What is chirality in biomolecules?

• A property that causes molecules to be identical in all organisms

• A property that ensures molecules are symmetrical

• A property where a molecule and its mirror image are not identical

• A property where a molecule and its mirror image are identical

How does molecular asymmetry influence the development of organisms?

• It leads to symmetrical growth in all organisms

• It has no impact on cellular structure

• It results in asymmetric cells and organisms

• It only affects the development of plants