Two weeks in a row are rainy, cancelling Lizette's weeding sessions. When she gets back out to the garden, the weeds are huge. Lizette peeks under the leaves of the weeds and observes some struggling radishes and carrots. They are small and yellowish and look unhealthy.
Since it has rained for two weeks, she knows the plants have plenty of water. Which of the following must also be present for the vegetables to grow
and thrive?
A food
B butterthes
C DNA
D cells be

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

Centriole.centrioles are present in animal cells but are usually absent in plant cells.