Which occurs during transcription? dna is copied to create a second dna strand. mrna codons and trna anticodons assemble amino acids. dna is unzipped with the aid of dna polymerase. mrna is synthesized from a strand of dna.

Depending on the organism the number of in a cell may change

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from