10 Questions
Which elements make up 96% of the human body's mass?
Oxygen, carbon, hydrogen, and nitrogen
What is the general name for the class of material that includes biomolecules?
Biological materials
Where are most biomolecules produced within an organism?
Endogenously
What are the primary metabolites that are considered biomolecules?
Proteins, carbohydrates, lipids, and nucleic acids
Which subfields of biology study biomolecules and their reactions?
Biochemistry and molecular biology
What is the femur?
The only bone in the thigh
What is the major factor in determining the femoral-tibial angle?
The angle of convergence of the femora
What does the top of the femur connect to in humans?
A socket in the pelvis
What happens in the condition genu valgum (knock knee)?
The femurs converge so much that the knees touch one another
What is the opposite extreme of genu valgum?
Genu varum (bow-leggedness)
Study Notes
Human Body Composition
- Oxygen, Carbon, Hydrogen, and Nitrogen make up 96% of the human body's mass.
Biomolecules
- The general name for the class of material that includes biomolecules is organic compounds.
- Most biomolecules are produced within an organism's cells.
- Primary metabolites that are considered biomolecules include carbohydrates, proteins, lipids, and nucleic acids.
Biology Subfields
- Biochemistry and molecular biology are the subfields that study biomolecules and their reactions.
Femur and Lower Limb
- The femur is the longest, heaviest, and strongest bone in the human body.
- The major factor in determining the femoral-tibial angle is the Q-angle, which is the angle formed by the quadriceps muscle and the patella tendon.
- The top of the femur connects to the pelvis at the hip joint in humans.
- In the condition genu valgum (knock knee), the femoral-tibial angle is increased, resulting in the knees angling inward.
- The opposite extreme of genu valgum is genu varum (bow leg), where the femoral-tibial angle is decreased, resulting in the knees angling outward.
Test your knowledge of biomolecules with this quiz! Challenge yourself with questions about proteins, carbohydrates, lipids, nucleic acids, and other essential molecules found in living organisms.
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