Which two substances bind using a lock and key mechanism?

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

This diagram shows how seed plants are grouped. which is the missing label? bryophytes angiosperms pteridophytes monocots

Which statement is a correct description of the processes of respiration and transpiration in a plant? question 7 options: transpiration is when the plant loses water through its leaves. respiration is when the plant breaks down the sugar in its cells to release energy. transpiration is when the plant pulls water into its roots. respiration is when the plant breathes. transpiration is when the plant grows over time. respiration is when the plant breaks down the sugar in its roots. transpiration is when the plant produces buds. respiration is when the plant dies.