Your mother asks you to carry a load of wood to the fireplace and lower it to the hearth. in doing this you have used your legs as levers. which statement describes this as a class three lever?
question 13 options:

a. the wood was the fulcrum, the load were was the knees, and the effort (input force) was supplied by your legs.

b. the wood was the load, the fulcrum was your knees, and the effort (input force was supplies by your leg muscles.

c. the fulcrum was the muscles in your legs, the load was the wood and the effort (input force) was the knees.

The answer would be sand and gravel

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein