Select the true statement(s) about enzymes. Enzymes increase biochemical
reaction rates.
Enzymes are catalysts.
Enzymes decrease activation energy.
Enzymes are proteins.
Enzymes are reusable.

Explain why phospholipid molecules form a bilayer. (3 marks)

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.