Answer:
Protein: 3. This folded amino acid chain is genetically encoded and performs specific functions in the cell.
DNA: 1. This series of nucleotides encodes proteins.
Chromatin: 4. This substance is made up of fibers that are formed in the nucleus by supercoiling genetic material.
Histones: 2. These proteins regulate transcription and modifications of genetic material.
Answer:
The factors which remained constant are as follows -
- material used as the membrane
- amount of substances used
- number of trials
The factors which have shown variation are as follows -
- molecule size (large starch molecules vs. small glucose molecules)
- whether the molecules diffused through the membrane (tubing)
Explanation
Some factors with in the experiments remained constant from the point of starting of the experiment to its end. While some factors were varied to study its impact on the experiment rate of progression or on the final product formed. Thus , out of the following given factors, the ones that remained constant are -
- material used as the membrane
- amount of substances used
- number of trials
The factors which have shown variation are as follows -
- molecule size (large starch molecules vs. small glucose molecules)
- whether the molecules diffused through the membrane (tubing)
The growth of plants and formation of land mammals characterized the paleozoic era.
